^^7- 8^ S,\v^S^ THE EDINBURGH NEW PHILOSOPHICAL JOURNAL, EXHIBITING A VIEW OF THE PROGRESSIVE DISCOVERIES AND IMPROVEMENTS IK THE SCIENCES AND THE ROBERT JAMESON^ RKOIVS PROrBSSOR OF NATUBAI, HISTORY, liBCTURBR ON MINKRALOGV, AND KBRPBR OV THE MUSKUM IN THE UNIVERSITY OP EDINBURGH ; Fellow of the Royal Societies of London and Edinburgh} of the Antiquarian andWemerian Societies of Edinburgh ; Honorary Member of the Royal Irish Academy, and of the Royal Dublin Society ; Fellow of the Linnean and Geological Societies of London ; Honorary Member of the Asiatic So- ciety of Calcutta j of the Royal Geological Society of Cornwall, and of the Cambridge Philosophi- cal Society ; of the York, Bristol, Cambrian/ Northern, and Cork Institutions ; of the Royal So- ciety of Sciences of Denmark ; of the Royal Academy of Sciences of Berlin ; of the Royal Academy of Naples ; of the Imperial Natural History Society of Moscow ; of the Imperial Pharmaceutical Society of Petersburgh ; of the Natural History Society of Wetterau ; of the Mineralogical Society of Jena ; of the Royal Mineralogical Society of Dresden ; of the Natural History Society of Paris ; of the Philomathic Society of Paris ; of the Natural History Society of Calvados ; of the Senken- berg Society of Natural History ; Honorary Member of the Literary and Philosophical Society of New York ; of the New York Historical Society ; of the American Antiquarian Society ; of the Academy of Natural Sciences of Philadelphia ; of the Lyceum of Natural History of New York, OCTOBER 1827.. APRIL 1828. TO BE CONTINUED QUARTERLY, EDINBURGH : PRINTED FOR ADAM BLACK, NORTH BRIDGE, EDINBURGH; AND LONGMAN, REES, ORME, BROWN, & GREEN, LONDON. 1828. p. Neill^ Printer^ Edinhnrgh. CONTENTS Page Art. I. Biographical Memoir of Sir William Herschel. By Baron Fourier, - - - . i II. Description of a New Magnetical Instrument (pro- posed to be called the Solar Compass or Heliastron), with some Observations on subjects intimately or remotely connected with the phenomena it exhibits. By Mark Watt, Esq. Member of the Wernerian Natural History Society. With a Plate. Commu- nicated by the Author, - - - 1 6 III. On the Semamith of Solomopi Prov. xxx. 28. By the Rev. David Scot, M. D. M. W. S. F.H.S. E. Com- municated by the Author, - - 30 IV. On Vegetable Substances growing on the bodies of living Animals, - - - - 38 V. On the relative Proportions of certain parts of the Eye of the Foetus, compared with the same parts of the perfectly developed Eye. By Professor Carus, 41 VI. On the Irritability of the Stigma, and on the origin and nature of certain parts of the Fructification in Pinus Larix. By Mr David Don, Libr. Linn. Soc. Member of the Imperial Academy Naturae Curioso- rum, of the Royal Botanical Society of Ratisbon, and of the Wernerian Society of Edinburgh, &c. Communicated by the Author, - - 43 VII. Essay on the Domestication of Mammiferous Animals, with some introductory considerations on the va- rious states in which we may study their actions. By M. Fred. Cuvier. Continued from former Vo- lume, p. 318. - - - - 45 VIII. On a new Gyrogonite, or Fossile Capsule of the genus Chara, occurring very abundantly in the fresh- water Limestones of the neighbourhood of Paris. By M. Constant Prevost, - - . - 60 IX. Notice regarding Fossil Remains found in Ava, 63 ii CONTENTS. Art. X. Report made to the Royal Academy of Sciences of Paris, upon a Memoir by M. Constant Prevost, en- titled. An Examination of the Geological Question, whether the Continents which we inhabit have been repeatedly submersed by the Sea. By Mess. CuviER and Cordier, - - - 66 XI. On the History and Constitution of Benefit or Friend- ly Societies. By Mr W. Eraser, Edinburgh. Con- tinued from p. 296. of former Volume, - 69 XII. Sketch of the Physical Geography of the Malvern Hills. By William Ainsworth, Esq. Member of the Royal College of Surgeons, Edinburgh, &c. Communicated by the Author, - - 9I XIV. 1. Proposed Improvement in the Theory of Sound, and in the mode of Measuring its Velocity. 2. On the Theory of the Variation of the Barometer. By H. Meikle, Esq. Communicated by the Author, 100 XV. Excerpt from a Memoir on British Harbours, drawn up in the year 1824. By Robert Stevenson, Esq. F. R. S. E. & M. W. S. &c. Civil Engineer. With a Plan. Communicated by the Author, - 110 XVI. Observations on the Coal-field, and accompanying Strata, in the vicinity of Dalkeith, Mid-Lothian. By Robert Bald, Esq. F. R. S. E. M. W. S. &c. Mining-Engineer. Communicated by the Author, 115 XVII. On the Covering of Birds, considered chiefly with re- ference to the Description and Distinction of Spe- cies, Genera and Orders. By Mr W. Macgillivray, M.W.S. &c. Continued from former Vol. p. 263. 123 XVIII. A Tour to the South of France and the Pyrenees, in 1825. By G. A. Walker Arnott, Esq. F.R.S.E. F.L.S. M.W.S. Continued from former Vol. p. 356. 130 XIX. Account of Harris, one of the Districts of the Outer Hebrides. Communicated by the Author, 1 40 XX. On the Discovery of Native Iron in Canaan, Connec- ticut, North America, - - - 154 XXI. General Observations on Natural History, made du- ring a Journey among the Blue Mountains in New South Wales, By M. R. P. Lesson, - 156 XXIII. Analyses made at Colombo of Ceylonese Varieties of Ironstone and Limestone. ByGEORGE Middleton, Esq. Apothecary to the Forces. Communicated by Sir James M'Grigor, - - ,- I67 CONTENTS. iii Art. XXIV. Letter from Professor Leslie to the Editor on Mr Ritchie's Experiments on Heat, and New Photometer, - - - - 171 XXV. Description of several New or Rare Plants which have flowered in the Royal Botanic Garden, Edinburgh, during the last three months. Communicated by Dr Graham, - 172 XXVL Celestial Phenomena from January 1. to April 1. 1828, calculated for the Meridian of Edin- burgh, Mean Time. By Mr George Innes, Aberdeen, - - - - 177 XXVIL Proceedings of the Wernerian Nat. Hist. Society, 179 XXVHL Scientific Intelligence. METEOROLOGY. 1. Great Fall of Rain at Bombay, - - - 182 HYDROGRAPHY. 2. Colour of the Red Sea. 3. Melted Snow employed as Drink. 4. Notice regarding the Falls of Rewah, and a remark- able Conical Hill at Myhur, - - - 182 NATURAL PHILOSOPHY. 5. Distances at which Sounds are heard. 6. Capillary Action 7. Farther Observations made on the Solar Compass, 183-4 CHEMISTRY. 8. Metal of Alumina, - « - - - 185 MINERALOGY. 9. Largest known masses of Native Platina. 10. On the Os- tranite, a new Mineral Species; by Aug. Breithaupt 11. On the Rose-coloured Petrosilex of Sahlberg; by M. *Berthier, ----- 185-6 GEOLOGY. 12. From what Countries have the Islands in the^ West Indies derived their Plants? 13. Fossil Skeletons of Guada- loupe. 14. Organic Remains of the Alluvium and Di- luvium of Sussex. 15. Hansteens projected Journey to Siberia. 16. Partsch's Journey through Transylvania. 17. Fossil Remains of Quadrupeds in the Tertiary Rocks of Vienna. IS. Von Buch's Observations and Specula- tions in regard to the Alps. 19- Boue's Memoir on Eu- ropean Formations, and their probable Origin. 20. Dr Boue on Secondary Rocks, - - - 187-190 BOTANY. 21. Signs of Increase, Maturity, and Decay in Trees; by M. iv CONTENTS. Baudrilla^:, 22. Botanical Excursion in Sutherland- shire, - - - - - ^71-193 ZOOLOGY. 23. On the tendency of Matter to become Organized. 24. On the Animalcules that colour Oysters Green. 25. Bea- ver. 26. On the Culture of Bees in Forests ; by M. Buttner, 27- Peculiar Cases of the Use of Milk as Food; 28. On the predestination of the Sex. 29- Growth and habits of a Young Rhinoceros. SO. Cuvier's Great Work on the Natural History of Fishes. 31. A New Species of Pentacrinus discovered in the West Indies, 194-200 PHYSIOLOGY. 32. Distribution of Nerves in Muscular Fibres, - 200 ANATOMY. 31. Sabulous Formation in the Brain, - - 201 ARTS. 34. Water Works of the Ancient Romans. 35, Manner of Bronzing Statues, Medals, and Ornaments made of Cop- per or Bronze. 36. Loss of Gold and Silver in Gilding and Plating. 37- Piney Tallow. 38. Indelible Writing Ink. 39. Lardner's Lectures on the Steam-Engine. 40. Carter's Patent Cast-Iron Roofing, - - 201-203 STATISTICS AND GEOGRAPHY. 41. Civilization of the Aborigines of Newfoundland. 42. Capt. Parry's reported Second Expedition to the North Pole, 205, 6 NEW PUBLICATIONS. 1. Introduction to Comparative Anatomy. By Professor Ca- Rus of Dresden. Translated from the German by R. T. Gore, Esq. 2 vols 8vo, with a 4to volume of Plates, 206 2. Conversations on the Animal Economy. By a Physician. In Two Volumes 8vo, - - - - 208 3. Memoir on the Pentacrinus europaeus; a recent species dis- covered in the Cove of Cork, July 1. 1823; with Two illustrative Plates. By John V. Thompson, F.L.S. Sur- geon to the Forces, _ - ,. - 209 4. Anatomical Description of the Human Eye. By Alexan- der Watson, Esq. Fellow of the Royal College of Sur- geons, Edinburgh. Illustrated by a Coloured Plate, ib. 5. Forthcoming Transactions of Foreign Societies, - 210 Art. XXIX. List of Patents granted in England, from 1 7th August to 29th November 1827, - 210 XXX. List of Patents granted in Scotland from 3d October to 6th December 1827, - 212 CONTENTS Page Art. I. Biographical Memoir of Peter Simon Pallas, Coun- sellor of State to his Majesty the Emperor of all the Russias. By Baron Cuvier, Knight, Professor, &c. 211 11. Observations on the large Brown Hornet of New South Wales, with reference to Instinct. By the Rev. John M'Garvie, A. M. In a letter to James DuNLOP, Esq. Paramatta, - - - 237 III. Analysis of the Gil-i-toorsh, or Sour Clay, used in aci- dulating Sherbet in Persia. By Edward Turner, M. D. F.R.S.E. Professor of Chemistry in the Uni- versity of London. Communicated by the Author, 243 IV. Account of Excavations made at Pompeii from De- cember 1826 to August 1827. By T. C. RaMaoe, Esq. Communicated by the Author, - 244 V. Sketch of the Natural History of the Salmo Salar, or Common Salmon. 1. Of the Process of Spawning, and subsequent evolution of the ova: 2. Of the growth and movements of the Young Brood, to and from the sea during the first year of life ; and, 3. Of the migrations of the Salmon betwixt the River and the Sea. By Daniel Ellis, Esq. F. R. S. E. With a Plate, . - - - 250 VI. On the Temperature of the Interior of the Earth. By M. L. CoRDiER, Member of the Royal Academy of Sciences, and Professor of Geology in the Garden of Plants, - - - - - 273 VII. Memorandum from the Right Honourable the Lord President, containing some facts relating to the Natural History of the Swallow and the Partridge, 290 VIII. Essay on the Domestication of Mammiferous Animals, with some introductory considerations on the va- rious states in which we may study their actions. By M. Frederick Cuviek. (Continued from p. 60.) 292 ii CONTENTS. Art. IX. On the History and Constitution of Benefit or Friend- . ly Societies. By Mr W. Fraser, Edinburgh. Con- tinued from p. 91. - - - 298 X, A Short Sketch of the Geology of Nithsdale, chiefly in an Economical point of View, and contrasted with that of the neighbouring Valleys. By James Stuart Menteath, Esq. younger of Closeburn, Member of the Wernerian Natural History Society. 1. General Account. 2. Basin of New Cumnock. 3. Ba- sin of Sanquhar. 4. Basin of Closeburn. 5. Basin of Dumfries. 6. Upper and Lower Basin of Annan- dale. 7- Upper and Lower Basin of Eskdale. 8. Annandale and Eskdale contrasted with Nithsdale. 9. Basin of the Dee contrasted with Nithsdale, 314 XI. A proposition for carrying on a Course of Experi- ments, with a view to constructing, as a National Instrument, a large Refracting Telescope, with a fluid concave Lens, instead of the usual Lens of Flint Glass. Addressed to his Royal Highness the Lord High Admiral, and the Right Honour- able and Honourable Members of the Board of Longitude. By Peter Barlow, F. R. S. Mem. Imp. Ac. Petrop. &c. &c. - - 323 XII. On the Principal Causes of the Difference of Tem- perature on the Globe. By Baron Alexander Von Humboldt, - - 329 XIII. Some Account of the Habits of a Specimen of Siren lacertina, which has been kept alive at Canonmills, near Edinburgh, for more than two years past. By Patrick Neill, A.M. F.R.S.E. and Sec. W.S. Communicated by the Author, - - 346 XIV. A Tour to the South of France and the Pyrenees in the year 1825. By G. A. Walker Arnott, Esq. F. R. S. E. F. L. S. M. W. S. &c. (Continued from p. 139.), - - - - ^ 355 XV. Narrative of an attempt to reach the North Pole, in Boats fitted for the purpose, and attached to His Majesty's ship Hecla, in the year 1827, under the command of Captain W. E. Parry, R. N. F. R. S. L. &c. 363 XVI. Observations on the Dissecting and Preparing of the Bodies of Animals. By Professor Carus, - 378 CONTENTS. iu Art. XVII. On the Irritability of the Sensitive Plant. ByM. DUTROCHET, - - - - - - 380 XVIII. Description of an Improved Air- Pump. By John Dunn, Optician, Edinburgh. With a Plate, 382 XIX. Remarks upon the Wasting Effects of the Sea on the shore of Cheshire, between the rivers Mer- sey and Dee. By Robert Stevenson, Esq. Civil Engineer, F.R.S.E. M.W.S. &c. Com- municated by the Author, - - 386 XX. Description of several New or Rare Plants, which have flowered in the Royal Botanic Garden, Edinburgh, during the last three months. By Dr Graham, - - « . 389 XXI. Celestial Phenomena from April 1. to July 1. 1828, calculated for the Meridian of Edinburgh, Mean Time. By Mr George Innes, Aberdeen, 394 XXII. Proceedings of the Wernerian Natural History Society. Continued from p. 1 82. - 397 XXIII. Scientific Intelligence. ASTRONOMY. I. Appendix to the Nautical Almanack. 2. Reduction of the Observations made by Sir T. M. Brisbane in the Sou- thern Hemisphere. 3. Voyage of Experiment and Dis- covery. 4. Charts of the Zodiacal Stars, - 398, 399 meteorology. 5. Meteorological Table, extracted from the Register kept at Kinfauns Castle, North Britain ; Lat. 56" 23' 30". ; above the Level of the Sea 140 feet. 6. Mr Watt's Solar and Lunar Compasses, - - - - 399, 400 CHEMISTRY. 7. Animal Matter in Mineral Waters, 8. Crystals of Oxalate of Lime in Plants. 9* Iodine in Cadmium. 10. New Mode of preserving crystals of Salts, - - 401 GEOLOGY. II. Inflammable Gas arising after boring for Salt. 12. In- flammable Gas from Salt Mines employed for producing Light 13. Analysis of Peat. 14. Geology of the Hi.. W " CONTENTS. malaya Mountains. 15. Natural Gas-Lights at Fre- donea^ - - - - - ' 401-404 BOTANY. 16. Eriophorum pubescens. 17. Rhodiola and Scilla, 404 ZOOLOGY. 18. Recovery from Drowning. 19. Preservation of Skins. 20. Stupendous Lizard. 21. Sea Serpents and Colossal Medusa. 22. Chinese method of Fattening Fish. 23. Leacia lacertosa, - - - - 405-408 GEOGRAPHY. 24. Mr Cormack*s Journey in search of the Red Indians. 25. Mr Thomas Park's Journey into the Interior of Afri- ca, - - - - - 408,410 ARTS. '^ g6. Manufacture of Ultramarine. 27. St Helena Silk. 28. Size and Value of Mahogany, - - 410, 41 1 NEW PUBLICATIONS. 29. Illustrations of Zoology; by James Wilson, Esq. F.R.S. M.W.S. 30. A History of British Animals, exhibiting the descriptive characters and systematical arrangement of the Genera and Species of Quadrupeds, Birds, Rep- tiles, Fishes, Mollusca, and Radiata of the United King- dom ; including the Indigenous, Extirpated and Extinct Kinds, together with periodical and occasional visitants ; by John Fleming, D.D. F.R.S.E. M.W.S. &c. Minister of Flisk, Fifeshire, and Author of the Philosophy of Zoo- logy. 31. Elements of Natural History, adapted to the present state of the Science ; by John Stark, Esq. F.R.S.E. & M.W.S. 32. Sketches of the Maritime Co^ lonies of British America, - - - 411,412 Art. XXIV. List of Patents granted in England from 20th November 1827 to 30th January 1828, 412 XXV. List of Patents granted in Scotland from 6th December 1827 to 23d February 1828, 415 List of Plates, » - - 416 THE EDINBURGH NEW PHILOSOPHICAL JOURNAL. Biographical Memoir of Sir William Herschel. By Baron Fourier *. X HE illustrious individual, with an account of whose life I am about to present you, was one of those extraordinary men who, although destined to honour their country and their age, have at their outset had to surmount all the obstacles which an adverse fortune presents to the first efforts of genius. He open- ed up new paths in a sublime science ; he saw stars whose exist- ence was previously unknown, and extended the boundaries of the visible heavens. Supported by the liberality of a powerful monarch, he devoted his life to immortal labours, and, for forty years, the fame of his discoveries has echoed through all Europe. At the age of nineteen he was only a musician in the Hano- verian Guards. His father, who had a numerous family to sup- port, was an able teacher of music, and educated five of his chil- dren in his own profession. William, his second son, who was possessed of a lively imagination and elevated mind, left his na- tive city Hanover in 1757, and went over to England, where the state of society held out to him the prospect of a better fate. He resided some years in the county of Durham, then at Hahfax, and soon after was appointed director of music to the ■ Read to the Royal Academy of Sciences of the Institute of France, on the 7th June 1 824. OCTOBER DECEMBER 1827- A 2 Biographical Memoir of' Sir William Hcrschel. Octagon Chapel at Bath. In this situation he enjoyed a con- siderable income, arising partly from his office, and partly, also, from his directing public concerts, and oratorios. His talents were admired, his character bj^loved, and his man- ners esteemed ; and, in a country where the fine arts are duly appreciated, if the common advantages of fortune had been his only object of ambition, his desires would have all been satisfied; but an internal power impelled him to higher destinies, — he was one day to extend the empire of science. The profound study of his art led him by degrees to that of geometry ; for there exist numerous relations between the laws of harmony and the theorems of mathematics, as has been prov- ed by many illustrious geometricians, from Pythagoras and Eu- clid to Descartes, Huygens and Euler. Herschel, introduced by geometry to the knowledge of theo- retical astronomy, was seized with astonishment and admiration^ and felt as if transported into a new world. Pie anxiously de- sired to contemplate for himself those celestial phenomena whose laws the human intellect had been able to discover. It was then that he began to construct telescopes, and undertook to im- prove their use ; and as perseverance in his resolutions was al- ways the distinguishing character of his mind, he accomplished these objects, and soon found himself possessed of instruments superior to all that an art so difficult and ingenious had yet produced. His first astronomical observations, which bear the date of 1776, were followed by a memorable discovery which excited the public attention to the highest degree, — I mean that of the planet which for several years has borne the name of Herschel. The earliest observers of the heavens distinguished a small number of stars, which are continually changing their position with regard to the fixed stars, and return periodically to the same points of the sphere. The different durations of these revolu- tions of the planets were known and compared with each other from time immemorial, and to them is owing the period of seven days, the universal monument of the astronomy of the ancient nations. The moderns had made wonderful advances in the description and study of the heavens. Galileo, Huygens, and Do- imnique Cassini, had observed the first of the secondary stars Biographical Memoir of Sir William Herschel. f3 which the planets carry along with them in their course ; but it was not discovered, till the close of the last century, that there existed an immense planet beyond the orbit of Saturn. This discovery was destine^- to be the fruit of Hcrschers labours. He pursued with constancy the enterprise which he had formed of examining successively the various regions of the heavens, and of noting down all the remarkable phenomena which occur- red. At Bath, on the 13th March 1781, while examining, with one of his best telescopes, the constellation of Gemini, he ob- served a star, the light of which appeared to him very differ- ent from that of the neighbouring stars, and somewhat to resemble that of Saturn, but much feebler. The perfection of the instru- ment permitted him to see a well defined disk. Having con^ tinued his observations, he discovered that this star had shifted its place, although its motion with relation to the other stars was very slow, for it had been stationary during twelve days preceding. This observation was transmitted to Maskelyne and Lalande, and was confirmed at Paris, Milan, Pisa, Berlin, and Stockholm. The star was generally considered as an ex- traordinary comet free of all nebulosity ; and astronomers were occupied in determining the parabolic elements of its course. The President Bochard de Saron, of the Academy of Sciences of Paris, and Lexel, an astronomer of St Petersburg, who was in Lond.on at the time, were the first who discovered its circular form, and calculated the dimensions of the orbit. It was now no longer doubted, that HerschePs star was a new planet ; and all subsequent observations verified this unexpected result. We have here a striking proof of the perfection of modern theories ; for the laws regulating the motion of this new planet, were de- termined before it had accomplished the tenth part of its course, and that motion was not less accurately known than that of other planets which had been observed during so many centu- ries. Its distance from the sun is double that of Saturn, that is to say, upwards of 660,000,000 of miles ; its volume is more than seventy times as large as that of the earth ; it may be seen, in favourable weather, without the assistance of a glass. The period of its revolution is about eighty-four years ; and its tem- perature, situated at the extremities of the known planetary sys- tem, is more than forty degi'ees below that of ice. Some idea 4 BiograpJtkal Memoir of Sir William Herschcl. of its distance from the earth may be formed from the fact, that light, which travels at the rate of 70,000 miles in a second, takes about two hours and a half to come from it to us. Herschel, and, previous to his time, IJgiminique Cassini anJ Galileo, wished to give to the celestial bodies which they disco- vered, the names of the princes who had favoured their la- bours ; several astronomers have proposed the names of the first observers ; but the names of the recently discovered planets have not been dictated either by justice or gratitude ; they have been drawn from the confused remembrance of fables that have be- come unintelligible. The new planet received from Herschel the name of the Georgium Sidus; while astronomers at first gave It that of Herschel, but afterwards hesitated with regard to the names of Cybele, Neptune, and Uranus, the last of which ulti- mately prevailed. When the motion of this planet was calculated, the points of the heavens which it had successively occupied during the pre- ceding century, could be pointed out ; and thus, on consulting the collections of preceding observations, it was discovered that Flamsteed, Mayer, and Lemonier, had pointed out, in those very places, stars which are now no longer to be seen there. Their observations evidently refer to Herschefs planet, which they had not distinguished from the fixed stars. The cosmological opinions of Kepler, Lambert, and Kant, led them to suppose the existence of an eighth planet between Jupi- ter and Mars. The comparison that had been made of the dis- tances of each planet from that of Mercury, which is the nearest to the sun, suggested a similar remark. The discovery of Uranus rendered the idea much more plausible, and excited astronomers to new researches. The result was, that, in the great interval between Mars and Jupiter, and at a distance differing little from what had been indicated, there were discovered four small stars, which look like so many separated parts of the same pla- netary body, and which can only be perceived with the aid of telescopes. These important observations were made about the commencement of the present century ; we owe them to Piazzi, Olbers, and Harding. The astronomical labours of the music master of the Bath Chapel, the perfection of his instruments, which were all his own BiograpJiical Memoir of' Sir William Herschel. 5 workmanship, the singular circumstances of his life, the aids with which the arts had furnished him, and the noble use to which he applied his leisure hours, were the subject of conversa- tion in England, andjrfiroughout all Europe. AH these details fiime to the knowledge of the king. George the Third loved the sciences as the ornament of states, and as a pure source of glory and public prosperity. He sent for Herschel, antici- pated and realized all his views, and made him fix his residence at Datchett, and soon after at» Slough, within a very short distance of Windsor Castle. The retreat of Slough became one of the most remarkable places of the civilised world ; it was visited by illustrious travel- lers ; Herschel dwelt there with his family ; it was there that he finished his long and memorable career. The king interested himself in all his researches, and frequently wished to augment the expences proposed, in order that nothing might hmit either the perfection or the dimension of his instruments. History ought to preserve for ever the reply of this prince to a celebrat- ed foreigner who was thanking him for the large sums he had expended in furthering the progress of astronomy. " I pay the expences of war,"" said the king, " because they are necessary ; as to those of science, it is agreeable to me to prescribe them ; their object costs no tears, and does honour to human nature.*" Herschel had secured the assistance of one of his brothers, a loan well skilled in theoretical and practical mechanics, who se- conded all his designs, directed the carpenters in the construc- tion of the large instruments, and, with a rare sagacity, realized, almost as soon as expressed, all his brother'*s inventions. Their sister. Miss Caroline, soon acquired a very extensive knowledge in astronomy and mathematics. A lively and constant friend- ship, the desire of contributing to the glory of her brother, and without doubt a disposition of mind peculiar to this extraordi- nary family, procured her unrivalled success in her studies. She digested and published his observations. We are also in- debted to her for the discovery of several comets. She partici- pated in all the watchings, and in all the literary labours of her brother ; and assuredly no astronomer ever had a more intelli- gent, more faithful, and more attentive assistant. In this secluded retreat, adorned by the fine arts, and still 6 Biographical Memoir of Sir William Herschel. more by peace and the domestic virtues, Herschel, free from all cares, surrounded by a beloved wife and family, devoted to science, surrendered himself to the inspirations of his genius, or, in other words, to an invincible desire of studying nature and interrogating the heavens ; and, to borrow the words of one (4 his most celebrated cotemporaries, it was from this solitary vil- lage that the world was instructed in whatever was most singu- lar, and, perhaps, most difficult to perceive in the heavens. The history of optical inventions, and of their progressive im- provement, is too well known to require any notice in this place. Herschel's telescopes are those that have been named Newtonian. But he never ceased to study their properties, to vary them, and extend their use. Taught by long experience, he suppressed the plain mirror which produced a second reflection ; and this happy change, wjiich was long before proposed by Lemaire, but difficult of execution, and only applicable in large instruments, doubled, in a manner, the optical effect. He found, that, by exercising the eye in a gradual manner, it is rendered much more sensible to the impression of a weak light, and by this means he was enabled to magnify the images of ob- jects much beyond the limits at which other observers had been arrested. He detected two different properties which had not yet been distinguished, that which consists in augmenting the apparent dimension of bodies, and that of penetrating into the profundity of space to discover objects which might have been entirely imperceptible. Multiplied examples leave no doubt re- garding the truth and striking utility of this distinction. At length he formed the resolution of carrying the power of these instruments to the highest possible limits ; regarding less the circumstances calculated to facilitate their employment, than those which might augment their optical power, he constructed a telescope of extraordinary dimensions. It is indeed the largest instrument of this kind that has ever been made. Let any one imagine to himself an iron tube, 40 feet long and 15 inches in diameter, suspended beneath an assemblage of inclin- ed masts, and moved in all directions by a number of machines. The entire system is moveable round a vertical axis, and de- scribes a circumference of 40 feet diameter. A highly polished metallic mirror, weighing about 2000 pounds, is introduced in- Biographical Memoir of Sir William HerschcL 7 to llie tube, and when the instrument is turned toward the hea- vens, this mirror reflects the shining image of the stars. The observer is himself transported along with the tube in any di- rection required, for he is placed in a seat attached to the upper extremity ; the objects which he observes are behind him, and he views their reflected images. Herschel discovered, with this telescope, two new satellites of Saturn ; they are both nearer the planet than those made known by Iluygens and Cassini. Never had the heavens been ob- served with so extraordinary an instrument ; and, it may be said, that the greatest phenomena displayed themselves under a no- vel aspect. The nebulosities, those small luminous and irregu- lar clouds which may be remarked among the fixed stars, in va- rious regions of the heavens, appeared almost all to resolve themselves into an innumerable multitude of stars ; others, hi- therto imperceptible, seemed to have acquired a distinct light. On the entrance of Sirius into the field of the telescope, the eye was so violently affected, that stars of less magnitude could not immediately after be perceived ; and it was necessary to wait for twenty minutes before these stars could be observed. The instruments, of which he had previously made use, were less advantageous for the observation of some phenomena ; but it was more easy for him to multiply them, and vary their modes of application. No astronomer had yet been able to acquire so complete and so distinct a knowledge of the phenomena of the heavens. For example, the ring of Saturn always ceased to be jxjrceived when its plane was directed toward the earth ; but the feeble light which it reflects in that position was enough for Her- schel, and the ring still remained visible to him. An entirely new and very important observation made by him, was that of certain remarkable points on the surface of Saturn's ring. From these points, Herschel concluded, that this satellite, remarkable for its singular form, turns upon itself round an axis perpendicular to its plane; and he measured the duration of tliis rotatory motion, which is about ten hours and a-half. Not long before, a great geometrician in France investigated tlie same question, and solved it by mathematical anal3'sis, which is also a very powerful instrument, and the most general of all. M, dc Laplace demonstrated, that the rotation of the ring of Sa- 8 Biographical Mernoir of' Sir William Herschel. turn is a necessary consequence of the general principle of gra- vitation. He deduced from his analysis the same duration of ten hours and a-half, which the English astronomer afterwards found by direct observation. The history of science presents nothing more worthy of the attention of philosophers than this wonderful accordance of theoretical inductions with the improve- ment of the arts. HerschePs observations are so numerous and so varied, that we cannot here attempt any exposition of their subjects. Most of them have been confirmed and reduced to perfect certainty. The instruments which he used, and which possess so many re- markable advantages, are, however, liable to difficulties which limit their utility. His largest telescopes ought always to be considered rather as instruments of discovery than as instru- ments of precise measurement. In this respect they are among the most perfect productions of human ingenuity. We shall now speak of HerschePs views and experiments re- lative to the physical properties of the solar rays. From a long series of observations, made with powerful telescopes, he con- cluded that the light does not emanate from the body of the sun, but from certain shining and phosphoric clouds, which are produced and developed in its atmosphere. He thought that this immense ocean of light is violently agitated in its whole depth ; that, when it is broken up, we perceive either the soHd mass which is not so luminous, or its volcanic cavities, and that this is the origin of those black and variable spots which are seen on the sun's disk. Their extent is often much greater than the whole surface of the terrestrial globe ; they disappear when a calm is re-established in the solar atmosphere. It is well known that these spots, first observed by Galileo, led to the discovery of the sun's motion around its axis, and shewed that this motion is accomplished in twenty-five days and a-half. The new improvements in optics afford a very unexpected means of determining, whether it be true, as Herschel imagined, that the solar light does not issue from an incandescent solid or fluid. In fact, when such a body, raised to a very high tempe- rature, becomes luminous, the rays which it gives off in all di- rections do not come from the outer surface only, but are al- so emitted like the rays of heat by a multitude of material points Biographical Memoir (yf Sir William Hemchcl. 9 placed beneath the surface to a certain depth, extremely small it is true, but actually existing. Now, such of these rays as traverse the envelope of the heated mass obliquely, acquire and preserve a peculiar property which can be rendered sensible by experiment ; they are polarized. But if the same mass, instead of being rendered luminous by its proper temperature, is only covered with an extended flame, which is the source of its light, the rays then do not possess this property. We have, therefore, been enabled to submit to this singular test the light which the sun sends to us. M. Arago, the author of this beautiful experiment, and by whose labours natural phi- losophy and astronomy have often been enriched, has in fact dis- covered, that the solar rays, even when transmitted obliquely, are not polarized. It is therefore obvious, that, in regard to this point of the question, the opinion proposed by Herschel would be immediately deduced from the latest discovered properties of light. His researches, also, regarding the annual variations of the solar heat have excited the attention of philosophers ; and we shall soon be in possession of more accurate information on this subject. In several countries, and especially at the Royal Observatory of France, it has been resolved to collect and to publish every year accurate observations with respect to the ex- tent, the progress, and disappearance of the solar spots. We have now to mention the memorable experiments of Her- schel, which have given a new development to the physical theory of the sun''s rays. In studying the nature of that star, which had become with him a habitual subject of meditation, he employed variously coloured glasses for diminishing the intensity of the light. He thus had numerous opportunities of observing to what degree the interposition of these glasses modified the heat or light. It was not in the nature of his mind to stop at superficial remarks. He therefore undertook a series of varied experiments, and general physics was enriched with new and important facts, which have been fully confirmed by subsequent observations. It had long been discovered that the rays sepa- rated by the prism, and forming the solar spectrum, do not pos- sess the faculty of heating the terrestrial bodies to the same de- gree. This opinion had been verified by experiments made in Italy and France. 10 Biographical Memoir of' Sir William HerscheL In tracing the origin of this question, we find it in the writ- ings of a celebrated woman, whose name belongs to the literary history of France. Emilie du Chatelet, previously to her trans- lating and commenting upon the works of Newton, had sent a physical memoir to the Academy of Sciences at Paris, and af- terwards embarked with Euler in the examination of one of the greatest objects of natural philosophy, the theory of fire. In this memoir of Madame du Chatelet's, which was printed in 1738 by order of the Academy, the illustrious author proposes y to collect a sufficient quantity of homogeneous light to prove whether the differently coloured primitive rays have not also unequal degrees of heat ; whether, as appears to her to be very probable, the red ray, for example, does not give more heat than the violet ray. The writer adds, " the experiment deserves to be tried by those philosophers who may examine this es- say." The idea here expressed was proved correct, as we have said, by the observations of Landriani and Bochon. Herschers experiments on the same subject not only afforded a complete solution of the question, but led to entirely new results. He measured with precision the thermometrical effects of the seven unequally refrangible rays, and found that the red rays con- tained of themselves more heat than all the others together. The impression on the thermometer rapidly diminishes from the red to the violet rays, which are placed at the other extre- mity. The principal feature of HerscheFs talent was an ex- traordinary disposition to consider the same object with unre- mitting perseverance, and under every point of view. On re- peating his experiments on the solar rays, he wished to deter- mine the limit at which all sensible impression of heat ceases, and the point at which the impression is strongest. While en- gaged in this investigation, he met with a very unexpected re- sult ; he saw that the thermometrical effect continues beyond the red rays in the dark space bordering upon the spectrum, and it was even in that unilluminatcd space, and upon the pro- longation of the axis, that he found the point where the heat communicated is the greatest. The situation of this point is found to vary according to the circumstances of the experiment ; but, be this as it may, it is certain that this mixture of rays which the same star transmits to us, and which the prism re- Biographical Memoir of' Sir William Herschel 11 Tracts unequally, and divides into coloured elements, contains, also, an invisible heat, whose action may be rendered sensible and may be measured. The same observer further proposed to himself, to discover what are the rays which possess the power of illuminating bo- dies in the highest degree. He found, by a particular set of experiments, that this property belongs to the yellow rays, and that it diminishes with considerable rapidity, as we pass from these rays to either extremity of the spectrum. These singular discoveries excited a lively interest in all the learned societies. The existence of an invisible radiating heat, mingled with the solar light, was disputed. The discoverer was himself exposed to contradictions which exceeded all the bounds of literary criticism ; but that great philosopher having given the necessary explanations, kept silence on the subject. His ex- periments were repeated in England, Germany, and France, under the eyes o^^the most expert observers in Europe, and the truth of the results was universally recognised. It happened, also, that the distinction of the coloured rays, and of the invisible heat which the sun transmits, gave rise to the discovery of another not less remarkable property of the light of that star. The intensity of the chemical action of the different rays was made the subject of observation, and it was found that this action also, like that of the heat, subsists in an unilluminated space, but at the opposite extremity of the spectrum beyond the violet rays. We merely mention this experiment, as it does not properly belong to our subject ; and it is enough for us to add, that, at the present day, the existence of invisible rays of heat mingled with the sun''s light, can no longer be questioned. It was chiefly in this that the discovery announced by Herschel consisted. It seemed as if he were destined to discover and render sensible objects and properties, which had eluded the re- search of all other observers for a long series of affes. Although our planetary system occupies an extent of twelve hundred millions of miles, it may yet be said to form but an imperceptible point in the immensity of space. Thus far has the genius of man enabled him to penetrate into the vast regions of the universe. He has seen innumerable suns beyond the na- tural limits of his senses ; for the divine intellect frtnn which his IS Biog^raphkal Memoir of' Sir William HcrsclicL reason emanates, has given him the power of forming, as it were, new organs for himself. From time immemorial, sensible changes have been observed in the colour and brightness of se- veral stars ; new stars have been seen all of a sudden bursting forth into brilliancy, and, like ignited bodies, gradually fading and disappearing, having, perhaps, been converted into unillumi- nated orbs, and for ever withdrawn from our view. The proper and always extremely slow motions of a pretty large number of stars have been observed, or the alternating and periodical va- riations of some of these bodies. A more perfect knowledge of the history of the heavens is without doubt reserved for the ge- nerations to come. We can only, at present, hope for fixed and accurate results, like those of planetary astronomy ; we are con- fined to the description of the present state, and the distinction of the general characters of phenomena. The invention of te- lescopes, and especially HerschePs observations, have ^iven a prodigious extension to this branch of celestiaWphysics. We shall not here enumerate all the cosmological views of this great astronomer. The exposition of so extensive a theory would exceed the limits assigned to us ; but we shall point out some of its principal features. He ranks in the first class the stars which he names isolated, that is, such as are separated from the others by immense intervals, and do not appear sub- ject to a mutual action, whose effect is appreciable. He then considers the double or triple stars, or the more complex side- ral assemblages, whicli are systems of luminous bodies, evident- ly approximated and retained by an existing cause, and move together round a common axis. He next passes to the description of the nebulosities, or those milky-looking and confused spots irregularly scattered through- out the heavens. He chiefly observed the Milky Way, which he considered as a single nebulosity formed of many millions of stars. In it he saw more than fifty thousand traverse the field of his telescope in an hour. All these stars are distributed in a multitude of layers of great extent, in longth and breadth, and so superimposed, that the thickness of the system is much smaller than the other two dimensions. The stars which appear to us to be the brightest belong to the Milky Way. This is also the case with the sun, the centre of our planetary orbits, and it Biog7'apMcal Memoir of Sir WilUam Hersclui. 13 is for this reason, that, being placed in the interior of this nebu- losity, we see it as a zone which divides and surrounds the hea- vens. The first origin of these views occurs, if I mistake not, in the writings of Kant, and afterwards in those of Lambert, one of the most celebrated geometricians of Germany. But Her- schel, to whom these works were unknown, did not confine himself to general considerations. He deduced from positive and multiplied observations that explanation, which had been entertained by the celebrated philosopher of Koenigsberg, and the academician of Berlin. He distinguishes among the nebulosities those which power- ful telescopes resolve into a multitude of separate stars, those in which one or more shining centres are observed, and those which he names planetary, of a more defined spherical form, and a more homogeneous lustre. He shews the sinservation, if not more so, to conclude, that when the ♦ One of Captain Parry's officers, who was frequently employed in watch- ing the movementa of the needle at Port Bowen, mentioned to me, that he sometimes obseryed a considerable deflexion of the needle just at sun-rise, when the atmosphere was clear. and Remarks on the Theory of Magnetum, 27 compass needle ceases lo act, in the most northern latitudes, it * is because the magnetic influence there is feeble and unequally- supplied, and not because the needle is then placed over the very seat of magnetism. And that the cause of the needle'« pointing due north and south when near the Equator without any diurnal variation is, because it is there always fully acted upon by that combination of light, heat and electricity, or the component parts of those bodies, that may produce the mag- netic fluid ; and which are so abundantly and constantly gene- rated around the Torrid Zone ; and which ever exist there more or lessj in such force as to render the direct diurnal influence of the sun comparatively inferior upon the compass needle, and therefore incapable of producing much daily variation. It is evident that there must be an everlasting emanation of caloric, light and electricity from the Equator, verging to the north and south poles of the earth. And it is obvious, that whether they are distinct bodies, or only states of bodies, that the sun is the great agent that produces these phenomena, or regulates their rpovements. And, as this must create a conti- nual Jlood of light, heat and electricity, advancing in the direc- tion of the meridional lines to the north and south, and pervad- ing the whole of the atmosphere and surface of the globe ; and as the magnet is attracted and repelled by these bodies, accord- ing to their various modifications, it is not perhaps unreasona- ble to conclude that it is highly probable, that the unceasing motion of those bodies from the central line of the earth to the poles, may be the principal cause of most of the phenomena that are connected with the polarity of the magnetic needle. The property which Mr Barlow's plate possesses, of causing the needle to continue its action beyond the degree of latitude where it would otherwise cease to act, appears to me to be a far- ther confirmation of this view of magnetism, as iron seems to re- tain always more or less of the magnetic fluid, or something very analogous to it, and the rectifying plate will therefore for a time supply the deficiency at the poles of the earth. If this view of this branch of magnetism is correct, it would not be difficult to conceive why a magnetic needle should assume a position parallel to the magnetic meridian, or nearly parallel to the true meridian of any part of the earth, as it would, being SS Mr Watt on a New Magnetical Instrument, attracted by the magnetic fluid, necessarily place itself parallel to the direction of the current of that fluid. But this will be still more easily comprehended if we attend to the manner in which magnetism is communicated to a bar of steel ; and we would observe that the general notion, that the poles of a magnet, when used in communicating magnetism to a bar of steel, produce their opposites, is not literally true, as ei- ther the North or the South Pole of the magnet produces al- ways both a North and South Pole. And it depends entirely on what part of the bar, to be rendered magnetic, we first place the pole of the magnet, to determine where any of the poles shall be. If, for example, we place the south poles of two magnets upon the extremities of a bar of steel, and draw them towards the centre of the bar, we render, by a repetition of this ope- ration, both the extremities south poles, or similar to tlie poles used ; and the two north poles will be found at the centre of the bar of steel ; and a needle thus treated will stand east and west, or north and south. And as any single pole of a magnet will communicate both a north and south pole to any bar of iron, the part of the bar it touches first being always a pole si- milar to itself; and the part it is in contact with last, being ne- cessarily of the opposite description ; this seems unfavourable to the idea that there are two magnetic fluids. The magnetic fluid simply seems to follow the first direction that is given to it along any piece of steel ; and which can only be changed by drawing a magnet along it in an opposite direc- tion, as almost all our compass needles are rendered magnetic by drawing the north and south poles of two magnets from the centre of the needle to its extremities. Each of our compass needles possess actually four poles ; they have a north and south pole at their centre, and the same at their extremities. It is evident, therefore, that the magnetic fluid (or whatever it may be), will run along a bar of steel, in any way it is direct- ed. It will commence at both the extreme points of the bar, and give out at the centre ; or it will commence at the centre, and run off* by the extremities ; and the ends of the same bar may be made both north poles ; or they may be rendered both south; or alternately north and south. If this theory of magnetism be correct upon the whole, and and Remarks on the TJieory of Magnetism. 29 if we find that the south pole always receives the magnetic fluid, and the north gives it out, it follows that it must necessarily point north and south, according to the direction of the current that moves it. Upon this principle also, we would readily conceive why the needle dips when rendered magnetic, as it will be disposed to dip to the inclination, which the stream of the subtle bodies, al- ready alluded to, must assume in passing continually from the sun and central parallel line of the earth, to the north and south poles. The sun, indeed, in a clear atmosphere, has a visible effect on the dip of the needle. And if we take a thin bar of steel, about the thickness of the main-spring of a watch, and two feet in length, and render it magnetic, and balance it on a fine pivot, we can observe a slight variation occasionally in the dip of the needle, by a graduated scale, placed opposite one of its extre- mities, corresponding to the clearness of the atmosphere and time of the day. Upon the same principle also, the annual variation of the magnetic needle may be partly accounted for, by the radiating heat produced by the sun, and the other fluids already mention- ed, being conducted in greater proportions for a course of years towards the western part of our hemisphere, from a combina- tion ot causes no doubt similar to those which sometimes pro- duce a series of warm seasons to the west, and sometimes to the east of the world ; ' and perhaps this may be affected by the comparative progress of cultivation in the diff'erent nations of the earth. And this seems to coincide with the accounts of our late navigators, who have found the ice more melted toward the west than toward the east of the North Pole. I should conceive it to be but a very imperfect method of determining the magnetic intensity at any place, to subject the needle to vibration or torsion, as the state of the atmosphere, the influence of the sun at different periods of the year, and at different times of the day, local attraction, the attraction of gra- vitation, and the law of the vibration of the pendulum, must all have their share in the calculation ; and all these may be modi- fied by circumstances not readily perceived. Brighton Crescent, Portobello, \st October 1827. ( 30 ) On the Semamith of' Solomon^ Pro v. xxx. 28. By the Rev* David Scot, M. D. M. W. S. F. H. S.E. Communicated by the Author *. W E are told in the 25th verse of the 30th chapter of the Proverbs of Sofomon, that there are four things Httle on the earth, but endowed with great wisdom ; and in the 28th verse of the same chapter, we learn that the last of these four things is called semamith, which lays hold with its hands, and is in kings' palaces. As no other instance of this word semamith occurs in the He- brew Bible, several absurd interpretations of it have been given by the Jewish doctors. All these we shall not spend time in considering, but only notice two of the least objectionable, in addition to the commonly received interpretation. The first of these makes the semamith a swallow, but for no other reason, which we can conceive, than a similarity of sound in semmith, the Chaldee name for that bird. There may be cases, in which the meaning of a word may be learned from an- other, resembling it in sound ; but in others, such a resemblance will lead into gross mistakes. The swallow, to be sure, builds its nest in the windows, and sometimes the chimneys of our houses, and they may do so in Palestine ; but such a fact would not warrant the declaration, that they lay hold with their hands, and are in kings' palaces, as it would be grossly absurd to talk in that manner of any winged animal. The other interpretation referred to makes the semamith an ape, which is a very shrewd animal, occasionally a favourite of princes, and also furnished with two fore-legs, with which it can seize objects, which, in a loose way of speaking, may be called hands. An ape, perhaps, may not be thought too large for being called a little thing on the earth ; and most will agree that it may excite attention, if not wonder, by its tricks ; but it' does not go into palaces, unless by constraint. These must be desert- ed, before it choose them for its ordinary residence. • Head before the Wernerian Natural History Society 7th April 1827« 1 Rev. Dr Scott on the Semamith of Sohtnon. 31 To avoid these incongruities, lecourse has been had to the spider, and certainly this insect can quote a host of names in its favour. With a surprising uniformity, its cause has been sup- ported by Levi, EHas, and Kimchi among the Jews ; by Santes, Arias, Mercer, Munster, CastaHo, Junius and Tremellus among Christians : in short by the English, Italian, and Geneva trans- lators. That the spider is found in kings' palaces as well as in the houses of meaner men, is unquestioned. The species of spiders are numerous, and one of these has the peculiar attribute of the house spider. This species of spider, however, is oftener in a cottage than a palace, because there is less tolerance for such an insect in those buildings where there is more scrubbing and sweeping. In neglected forsaken apartments, containing useless or forgot- ten lumber, they are most ready to take up their abode. - But granting that palaces were not kept so neat and clean in ancient as in modern times, or that in warm climates it is more difficult to free buildings even of the better sort from insects, yet, we apprehend, that the spider, which is larger of size in warmer climates, and multiplies faster, will neither be a welcome nor a frequent guest in kings' palaces. It will oftener obtain an entrance into mean houses. It is encouraged by the careless- ness which prevails among the inmates, or the quietness which reigns through the apartments. In this manner, at least, Plau- tus, in the Aulalaria, talks of the dwelling of poor Euclio : " nihil est questi furibus, Ita inaniis sunt oppletae et araniis." Nay, when spiders abounded about one's house or furniture, the circumstance was deemed a sign of poverty ; thus, Afranius, quoted by Festus, " Tamque arciila tua plena est aranearum ;" In these terms Catullus excuses the meanness of an entertain- ment to a friend, " Tui Catulli plenus est sacculus aranearum ;" And old Hesiod exhorts, in the 474th line of his works and days, " You must drive away spiders from your vessels," i. e. banish poverty from your houses. 39 Rev. Dr Scott on the Semamith of Solomon. Tliese quotations seem to shew, that, according to the expe- rience of mankind, spiders are rather found in the cottages of the poor than in the palaces of kings ; but quite the reverse is the testimony of Solomon, who had seen so much of life, and thought so much of nature, if his ordinary interpreters have done him justice. The semamith f which is commonly interpreted the spider, is said to take hold with its hands, while in kings' palaces. The house, as well as many other spiders, has eight legs, and, from the structure of these, it can move along the under surfaces of the planks and rafters of a house, like the common fly, and se- veral animals of the lizard tribe. Now, the legs with which this operation is carried on, have sometimes been called fingers. They are so called in the Frogs, a comedy of Aristophanes, and in the 6th book of Ovid's Meta- morphoses. These are the words of the latter : " In latere exiles digiti pro cruribus hserent." Even when these are called fingers, the language is highly fi- gurative ; but the figure would border on absurdity, if it made the row of feet on each side a hand, to which it has not the least resemblance. Indeed, we do not recollect a passage in any au- thor, in which hands are assigned to the spider, though we recol- lect one in which there is a direct assertion to the contrary. The spider itself speaks, " Nulla mihi manus est, pedibus tamen omnia fiunt." Among the feet with which, according to this assertion, it per- forms every thing, the two feelers may be included. These are not organs by which it moves, but sometimes assistants when it seizes its prey with its teeth. We do not know how poets or orators would describe this action ; but if they should say that it lays hold with its hands, the language would neither be very obvious nor very intelligible. If, however, laying hold with the hands is to be viewed as a figurative description of the spider's spinning its thread, and weaving its web, these actions are seen with far more advantage in the country than in a palace. In a misty morning during summer, the webs of the field spider are hung from twig to twig, among the surrounding thorn hedges and whin bushes, as far as the eye can reach ; but though admiration may be thus Rev. Dr Scott on the Semamith of' Solomon. 33 awakened at the thought of the industry as well as the numbers of this insect, yet the chilling recollection is apt to steal on, that all these webs are instruments of destruction, snares for catching as prey, those little unfortunate beings who happen to be en- tangled. These operations of the field-spider have been beautifully il- lustrated by the Abbe Pluche, in a work once very popular, but now little read, entitled, Spectacle dc la Nature, or Nature Displayed. But whatever occasion these operations of the field spider may give to ornamented description, they have nothing to do with the proceedings of the semamith, as mentioned by the wise king of Israel ; and, therefore, that his account may be consistent, we are forced to look about for some other animal. To the lovers of truth, we will be justified in so doing, after they understand that the semamith is not the ordinary name of the spider in the Hebrew language. This is ocubish, which has become ocuhlm in Chaldee, and unhiibus in Arabic, both of which signify a spider. In the Hebrew Bible^ there are two passages in which the spider, under the name of ocubish, is mentioned. One of these is in Job viii. 14, " The hypocrite's hope shall be cut off, and Ills trust shall be a spider''s house or web."" The other is in Isaiah lix. and 5, " they hatch cockatrice eggs, and weave the spider'*s web." In these passages, every one sees that the pro- per work of the spider is noticed. We allow that this insect, or any other thing, may have two names, provided that the one recall some idea which is not sug- gested by the other ; and we would not object to semamith, as the name of the spider, more than to ocubish, if the accounts accompanying the use of the former, corresponded as well with the habits of the insect, as they do when the latter is used. From the want of this correspondence, several ancient as well as modern interpreters have been persuaded, that the animal denoted by semamith belongs to the lizard, and not the insect tribe. The Septuagint translators, who are more ancient than any other, and whose authority is entitled to high regard, have rendered semamith by the term calabotes, which Ilesychius the OCTOBER DECEMBER 1827. C d4} Rev. Dr Scott on the Semamith of' Solomon. lexicographer declares to be a certain fish or a lizard, i^hq Troixi As lizards are not unlike fishes in shape, and some of them live in water as well as on land, that expositor was to be excused, who contended that Solomon meant a fish by semamith, though it required no great reach of thought to discover, that fishes are not the residents of a king's palace, however they may inhabit his ponds. The calahotes of the Septuagint is rendered stellio by the Vulgate interpreter ; and many lizards may be called stelliwies, because of the variegations in the colour of the skin, peculiarly brilliant in warm countries. Hence, Ovid says of the stellio, " aptumque colori Nomen habet, variis stellatus corpora guttis." This rendering of the semamith by the Septuagint and Vul- gate is supported by the Syriac, Chaldee and Samaritan trans- lators. The term which each employs signifies stellio, or a spotted lizard. Bochart, in his Hierozoicon, says, that there are two species of stellio, the one poisonous and the other harmless ; but doubts which was meant by the semamith. If it be the stellio reputed poisonous, sem with a samech, which is convertible with sin, according to some, will signify poison, and of course the sema- mith will be the poisonous lizard. Others, however, pronounce shemamith, and bring it from a verb, which signifies to stun or stupify ; and they think this lizard is so called, because it stuns or stupifies the scorpion, to which it is said to be a determined and terrible enemy. So Galen, De Theriaca ad Pisonem, as- serts, that " the stellio, as soon as seen by scorpions, stuns, and so destroys them ;" and ^lian and Isidore, &c. agree with Ga- len in ascribing to the stellio this power over the scorpion. But what is still more to our purpose, in proving the sema- mith to be a stellio, is this sentence of the Talmud, treatise on the Sabbath, chap. 8. " The terror of the sernamith is upon the scorpion,"" a sentence which cannot be predicated of any spider, however formidable. Every spider has no other way of catch- ing its prey, but by entangling it in its web ; and the scorpion must have a far stronger and fiercer creature to deal with, when it is almost deprived of sense and life, at its very sight. Rev. Dr Scott on the Semamith of Solomon. S5 Now, if the semamith be a lizard reputed poisonous, Bochart informs us, that the Arabs have a lizard to which they give the name of samahras, signifying a spotted lizard, or the lizard which has spots like a leper, and to which the semamith, if ac- counted poisonous, may answer. If, however, the semamith be the stellio accounted harmless, Bochart thinks it may be the wezgu, which is less in size than the samabras, and so far suits the account which Solomon gives of the semamith, that it is a thing little upon the earth. But whether the semamith be the samabras or wezgu, as Bo- chart has endeavoured to establish, lizards are most abundant in warm and dry countries ; and as Arabia does not yield to any country in these respects, it may be called the land of lizards. They are present wherever a tent is pitched or a house is rear- ed. The Arabs, who are continually infested with their presence, have a name for every species ; and we believe, that, in no lan- guage spoken on the face of the globe, is the nomenclature of this tribe of animals more perfect than in Arabia. With or without reason, this creature is detested by the Arabs, as it was by the Greeks and Romans, Jahius, the son of Chomer, asserting, that the man who killed 100 stelliones, would be dearer to him than he who redeemed 100 slaves ; and Antonius Libe- rales, that they were abhorred by gods and men, and that he that slew one of them, did a most acceptable service to Ceres. All lizards, into whatever divisions, stelliones, geclcos, igua- nas, &c. they may be marshalled, have four feet. The hind, but especially the fore feet, very much resemble the arms and hands of a man. Whoever has seen any of the lizard tribe, will be instantly struck with this resemblance ; and on this ac- count, all the individuals of the tribe, which are very numerous, have been properly and strictly called Lacertce, that is, creatures with arms or hands. Supposing the semamith of Solomon a lizard, it is most con- sistently said to take hold with its arms or hands, in moving from one place to another, that it may catch flies, which are its ordinary food, elude the pursuit of its enemies, when it moves along places which they cannot reach, or secure its safety, if its back be undermost. In these respects it was natural for him c 2 26 Rev. Dr Scott 07t the Semamith of Solomon. to admire its dexterity, and declare that it discovered great wiiv- doni, though it was little on the earth. Indeed, every reflecting person would be filled with amaze- ment, when he beheld this Httle animal creeping up the walls, or along the ceiling of a house, grasping, as it would seem, the inequalities of the timber, and roughnesses of the stones, that its fall might be prevented, and its journey, perilous, at least, if not impossible to other creatures, accomplished. The animal, which performs such feats of daring and skill, loves to frequent houses of every name, new houses as well as old, palaces as well as cottages. Aristotle says, that it dwells in stables ; Antonius Liberalis, that it is found near common shores ; Pliny, that it resides in slaughter-houses, windows, caverns and tombs ; Arnobius, that it nestles in the cavities of statues ; and Mathiolus, that it lodges in the holes of walls near the ground. With great propriety, then, it has been called the house-lizard, by Porphyry, as quoted by Eusebius, by Suidas^ by the Ety- mologist, and Phavorinus, among the Greeks ; and by Alhasim, an Arabian physician of Bagdat. Aristophanes, Dioscorides, and Avicenna declare, that this li- zard fastens itself by its hands to the roofs of houses, but some- times losing its hold, drops down among the dishes on a table, and poisons the liquor of the cups, if it happens to touch it. Those may believe this account who can, but our faith is not strong enough to credit what Bustamentinus of Complutum as- serts, that, when, by some accident, these animals have been mingled with the food, they have poisoned whole nations. Many are the remedies prescribed against these poisonous results by yEtius, Paulus ^gineta, and Avicenna, but whether they be dictated by knowledge or error, is another matter. That lizards of all kinds are very numerous in Syria, these words of Bruce demonstrate : " I am positive that I can say without exaggeration, that the number, I saw one day in the great court of the Temple of the Sun at Balbec, amounted to many thousands. The ground, the walls and the stones were covered widi them ; and the various colours of which they con- sisted, made a very extraordinary appearance, glittering in the sun, in which they lay sleeping and basking." Rev. Dr Scott on the Semamith of Solomo7i. 37 Whore lizards are so numerous, there must be many species ; and, after all that has been done to clear up differences, consi- derable confusion must still remain, two or more species being described as one, while the same name is given to two or more species. While we acknowledge our obligations to Bochart for the chief materials of this essay, we regret that we have not had the power of perusing Scheuchzer, who has treated at great length the natural history of the Bible ; and we have not read or heard of any, who has attempted to point out the kind of lizard whicli corresponds with the semamith of Solomon. Cuvier^s Stellio of the Levant may be mentioned, the synonyms of which are the Stellio lacerta of Linnaeus, the Koscordylos of the modern Greeks ; though not the Hardun of the Arabians, if we mistake not, which rather answers to what is called the land crocodile. It is this Stellio of the Levant, which is often killed by the Mahometans, for mocking them, as they suppose, by lowering its head, when they say their prayers. Or Solomon's semamith may be the Gecko des murons of Cuvier, the synonyms of which are the Gecko of Hasselquist, the Gecko lohatus of Geoffroy, the Lacerta Hasselquista of Schneider. It is very frequent in the houses of all those coun- tries, bordering on the Mediterranean to the east and south. At Cairo, it is called Ahou hurg, or father of the leper, because it is supposed to communicate the leprosy to those who eat the food which it has touched with its feet. When it creeps over a per- son'*s hand, the skin inflames ; more, perhaps, says Cuvier, from the delicate sharpness of its nails, than the deleterious matter which it communicates. We know not whether the Lacerta ocellata, as it has been called by some, be different from the lizards just mentioned. It is about a span long : the feet are short, and five-toed in gene- ral : the colour is greenish-grey, with brown spots or disks. It is a native of Egypt, we presume also of Palestine, and frequents houses. Upon the whole, both authority and probability favour the idea, that the semamith of Solomon is a house lizard, and not a house spider ; though at present we are unable to say which spe- cies of house lizard has a preferable claim to every other. ( 38 ) On Vegetable Substances growing cni the bodies of living Ani- mals. XN a letter from Dr Samuel S. Mitchill of New York to Pro- fessor A. P. De Candolle of Geneva, in Silliman's Journal, March 1827, there are some interesting observations stated with regard to vegetable substances growing on the bodies of living animals. His attention was called to these curious appearances in the year 1808, when W. A. Burwell, Esq. brought him, from his own plantation in Virginia, the larva of an insect, upon which a vegetable had fixed itself, and grown to a considerable size. Fjom its appearance, he was induced to consider it as belonging to the species of Melolontha, ^whose grub is destructive at times to the roots of grass, in meadows and pastures. The vegetable was single, and, although somewhat injured, yet the lower part of the stem and the point of attachment, were very distinct. Some years afterwards, another vegetating insect was present- ed to him by Dr W. M. Ross, who obtained it in Jamaica, du- ring his residence there. It was a full grown Sphynx, whose whole body had been covered with a vegetable crop, issuing thick from the thorax and abdomen. Another Sphynx, similarly covered with vegetables, was sub- sequently shewn him by Dr J. B. Ricard Maddiana, who brought it from Guadaloupe. This gentleman also gave him severdl vegetating wasps, pro- cured by himself in the same place. On the 16th June 1823, while on a botanizing excursion at Bay Mahaut in the above island, he saw lying on the ground a wasp's nest, which had fallen from a branch of Laurus persea. Some of the animals were flitting about over the cells, and, by the softness of their wings, and the faintness of their colours, were easily' known to have been hatched but a short time. Many others were lying dead on the ground. On examining these, he instantly percei- ved vegetables proceeding from their bodies, and this uniformly from the anterior part of the sternum or thorax. Some of the cells still contained young wasps in the larva state, and which had not reached the last stage of their metamorphosis. He On Vegetable Substances growing on living Animals. 39 drew them from their cells, and satisfied himself that there was an incipient vegetation, and moreover that its progress had kept pace with the growth of the chrysalis. It was remarked, that rarely or never was there more than one vegetable on a single wasp. He then satisfied himself why the vegetable parasite was a- tuated on tne fore-part of the body. Botanists have pronounced this production to be a species of Spharia, belonging to the na- tural order of FtmgL Upon the supposition that it is propa- gated by seeds* in the ordinary mode, these seeds would natu- rally alight upon the most exposed part of the unhatched insect that was accommodated for their reception. This would of course be near the head. Being fixed there, it would increase with the enlargement of the animal, and drawing nourishment from its body, would continue to grow even after it had attain- ed its last and perfect state, until the Spharia had destroyed the Hfe of the wasp. The mind becomes reconciled to the idea of a vegetable sus- taining itself upon a living animal, by considering the history of the Ichneumon, an insect of the Hymenopterous order. It is called pupivorous, on account of the voracity with which its larvae devour the larvae, chrysalids, and even eggs of other in- sects, more especially those of the Lepidopterous order. Some of them penetrate the bodies of their prey, and, with their num- berless brood, slowly consume, and at last kill them ; while others, the Ophions, are attached to the skin of the larva by the footstalk of a cocoon, through which their heads pierce the in- ternal parts, while their tails remain in their own inclosures. This operation frequently continues until the large invaded larva completes its cocoon, when it dies consumed and exhausted. After this, the family of ichneumons come forth, first bursting their own cocoons, and then that of their prey. It is also stated as a fact, that one species of Ichneumon sometimes destroys the larvae of another species of the same genus. These occurrences furnish strong and instructive analogies. Here we find that the living bodies o£ caterpillai's and their chrysalids, are the habitations and nurseries of other insects, the Creator having arrayed one tribe against another, apparently for the purpose, among others, of putting a limit to their own 40 On Vegetable Suhstajices groivhig on living Animals. excessive multiplication. There seems also to be another check upon their inordinate increase. The fungous tribes of vege- tables are in various instances the destroyers of the insect race. Their germs or seeds, conveyed by the winds or otherwise to the surface of these creatures, find them to be situations fit for their adhesion. If it now may be considered as certain, continues t>Y Mitchill, that a vegetable may grow upon the larva or chrysalis of a wasp, and continue to increase until they change into the complete or imago state, and after, why may not the like happen to the larva and chrysalis of the Sphynx and Melolontha ? The presump- tion is strong, that the seeds were scattered on the back and sides of the larvae, exposed everywhere to their influence, and not incased and protected like the young wasps. Whence it might be inferred they would germinate and enlarge until after the beginning of the fourth metamorphosis, when they would probably overcome their supporter. Dr Maddiana, however, thinks, that, in some instances, the ve- getation commences only after life has ceased. Dr Mitchill continues to adduce instances of vegetable substances issuing from the bodies of insects ; and in conclusion draws the following in- ferences : 1. That this kind of vegetation is not confined to a single species of insect, but obtains in several, viz. the Wasp, Sphynx and Melolontha, there being also reason to suppose that it extends to others : % That the bodies of insects nourish more than one species of vegetable, as the Sphasria, Clavaria, and pro- bably others not yet investigated : 3. That a part, at least, of this order of parasitical vegetables, begin their work of annoy- ance, like the larvae of the ichneumon, in the body of the living- insect, and continue it until the creature is killed by its destruc- tive inroads : 4. That these mixed associations of vegetable with animal matter, are not prone to rapid putrefaction, but remain long enough to be collected by naturalists, and become the ob- jects of scientific inquiry. The chief or leading fact intended to be established, is the derivation of nourishment by the vegetable from the living animal, which the Doctor thinks may be rendered more admis- sible, when we reflect that the bodies of dead animals support vegetation, in the form of manure and otherwise, and that many Prof. Carus on the relative Proportions of the Eye. 41 Crustacea and MoUusca are invested with a dense vegetable co- On the relative Proportions of cei'tain parts of the Eye of tlie Foetus^ compared with the same parts of the perfectly de- veloped Eye. By Professor Carus. JL HE remark has ah'eady been made by some anatomists and physiologists, that the human eye, as well as all the organs, runs through a series of degrees of development, in which its analogy with the eye of animals is so much the greater, the nearer it is to its first formation. The object of Professor Carus, in his memoir, is to follow out this proposition in some of its details. The following are among the most interesting results of his in- vestigation. The eye of man, compared with that of animals, presents -the most extended retina, in proportion to the size of the. eye-ball (consult Sommering''s Plates, De Oculorum hominis ariimor- Uumque sectione hj)rizontaVi, Gotting. 1818). The vitreous body of the human eye 'Hi the largest of all, compared with the bulk of the crystalline humour : the portion of the eye-ball which covers the transparent cornea, and which allows the iris and pupil to appear, is smaller in proportion to the part which the sclerotic covers ; and this proportion is modified only in birds, especially the birds of prey, in which the extraordinary breadth of the ciliary processes puts limits to the extension of the retina, which is kept at a distance from the edge of the cor- nea. In the eye of animals, also, the sclerotic scarcely appears imder the palpebrae, while a considerable portion of it is visible in the human eye. It is equally observed, in the different forms of the latter, that the relation of the extent of the iris and pupil, to the sur- face of the visible portion of the sclerotic, is not always the same. In children, the iris and pupil have a greater proportional ex- tent, exhibiting an analogy with the eye of animals ; and in adults a large iris with its pupil, seems to us rather to be the expression of physical power, while an eye in which the contrary takes place, and in which the sclerotic coat shews itself to a great 42 Prof. Car us on. the relative Proportions of the Eye. extent, expresses rather something spiritual or celestial. The pious painters of the old Italian and German schools had a clear idea of this proportion, and in their representations of eyes of vir- gins, angels, Christ, and saints, it may be seen that the pupil and iris are smaller in relation to the sclerotic, than they are in well formed ordinary eyes. From this it may be presumed, that the eye of the foetus will equally present modifications in the pro- portion of the parts of which it is composed. The results which M. Carus has obtained, in consequence of accurate measure- ments, are the following : Age of the Foetus in lunar Months. Relation of the diameter of the iris to that of the globe of the eye. Relation of the diameter of the iris to the length of the axis of the globe. 2 3 : 6=1:2 3: 4 = 1:1J 3 9:17 = 1:1| 9:15 = l:lf 4 12:22 := 1 :!]£ 12:17 = 1:1J 5 23:38 = 1 rlJJ 23:33 =r 1:1|§ 6 26:45 = 1 :1JS 26:43 = lilll 7 30:58 = 1 :li| 30:55 = 1:1|^ 8 33:65 = 1 :li| 33:62 = 1:1|§ 9 37:73 = 1 :l|f 37:70 = 1:1|? 10 45 :85 = 1 :1|? 45 : 77 = 1 : Iff Woman of 60 ] [-50:110 = 1 :2^ 50:112= l:l/y years, It is seen from this, that the proportion of the breadth of the iris to that of the gl6be of the eye, as well as that of the iris to the axis of the eye-ball, increases with age. The following is another table, which presents some points of comparison with the eye of animals : Relations of the breadth Relation of the breadth Animal. of the iris to that of the of the iris to the axis globe of the eye. of the globe of the eye. Pike *, . . 8.5 : 10.5 = 1 : If J 8.5 : 8.5 = 1 : 1 Crocodile, ,5.0 : 7.5 = 1 : If J 5.0 : 6.5 = 1 : IJg Golden eagle, 7.5 : 16.0 = 1 : 2^ ? 7.5 : 14.6 = 1 : 1|J Chamois, . 10.5 : 14.0 = 1 : l//y 10.5 : 12.8 = 1 : 1//^, There results from all this, that the eye of the foetus only as- sumes by degrees the proportions that obtain in the eye of the adult ; and that the smallness of the iris, in proportion to the * Brochet, Esox iucius, Linn. Mr Don ofi the trritabiUty of the Stigma in Pinus iMriac. 43 diameter as well as tx) the axis of the ball of the eye, is one of the characters by which the fully developed human eye is distinguish- ed, both from the eye of the foetus, and from that of animals. On the Irritability of the Stigma, and on the origin and nature of certain parts of the Fructification in Piniis Larix. By Mr David Don, Libr. L. S., Member of the Imperial Aca- demy Naturae Curiosorum, of the Royal Botanical Society of Ratisbon, and of the Wernerian Society of Edinburgh, &c. (Communicated by the Author). XT is a well known fact, that certain plants themselves, but more generally particular organs, are endowed with a species of irritability analogous to that observable in the animal kingdom. While engaged in examining the female flowers of the common Larch, during the last spring, in order to satisfy myself respect- ing the real nature of the stigma, I was much surprised by the remarkable degree of irritability observable in that organ, a cir- cumstance which I am not aware had ever been before noticed. That the cucullate processes at the base of the ovaria are the true stigmata, is a point so fully established, as to render im- necessary any additional facts in its support. To regard the ovaria as naked ovula, and that impregnation takes place by the pollen being immediately shed on their surface, instead of being conveyed by means of an organ analogous to the stigma of other plants, are opinions by far too paradoxical to admit of belief. These cftcullatc processes, when fully mature for the reception of the pollen, expand, and their inner^surface is then clothed with innumerable minute papillae. I took a branch bearing unimpreg- nated female flowers, and having dusted them with the pollen from the ripe male catkins of another branch, I found on exa- mination the cucullate stigmata completely filled with the pol- len, and I could readily perceive the sides of the female organ contract gradually, until they finally became completely collapsed. The pollen in Coniferat being composed of minute vesicles filled with a prolific fluid, the collapsing of the sides of the stigmata is evidently for the purpose of pressing out the contents of these vesicles, and forcing the fluid through the narrow duct on to the 44 Mr Don on the irritability of the Stigma in Pinus Larix. ovulum. When impregnation has taken place, the sides of the stigma again expand, and soon after wither. In this state, the stigma is seen filled with the empty cells of pollen. If a branch with female catkins is separated from the tree before impregna- tion has taken place, it is surprising how long the stigmata will remain expanded and in a perfect state. This circumstance has been also remarked in the female organs of other plants. That the amentum of Finns is nothing more than a modified branch, is well exemplified in the larch, where a comparison between an expanding bud and the female catkin is at once convincing. The bracteae, which in the larch are persistent, being regarded as altered leaves, the flowers are, therefore, truly axillary, and their situation may be compared to those of Hippwis. The fleshy scales, which afterwards compose the cone, are analogous to the nectarium of Salix, &c. ; and one of their uses, namely, the nourishing the early stage of the ovarium, as the albumen does the embryo, is precisely similar. The ovaria at first are firmly attached to the upper surface of the scales ; but on their increasing in size, they by degrees lose the connection, till at length, in the ripe state, they become perfectly free. These scales, in the early state, are fleshy and orbicular, composed of a cellular substance, having neither veins nor nerves traversing them ; their upper side is convex, and underneath flat, with an acute, slightly fringed margin ; the whole surface is pruinose : in the young state succulent, and gradually increasing in size, they finally constitute the cone, becoming then dry, coriaceous, or woody. In this state, from their arrangement and structure, they admirably serve to protect the seeds from the destructive effects of the severe weather to which in winter they would otherwise become exposed ; and we cannot but admire the wise provision of Nature in this instance, which has given to these natives of cold regions the means of protecting their seeds through the winter, until finally matured in the warm weather of the following spring. In judging of the origin and analogies of the stamina in Conifera^, instead of looking for the resem- blance in the leaves, we must begin by comparing them with the bracteae of the female catkin, which we have already shewn to be modified leaves ; and it therefore follows, as a deduction, that they are both modifications of the same organ, namely of the leaf. ( 45 ) Essay ofi the Domestication of Mammiferous Aiiimals^ with some introdtictory cansideratiovis on the variozis states m ivhich we may study their actions. By M. Frederick CuviEK. Continued from former Volume, p. 318. jl\S our means of goocl treatment are various, and as the effect of each of them differs, according to the different nature of the animals on which they are made to act ; the choice of them is far from being a matter of indifference, and they require to be accurately appropriated to the object in view. To satisfy the natural wants of animals would be a means which eventually might bring about their submission, especially if applied to very young animals. The habit of constantly re- ceiving their food from our hand would familiarise them, and render them attached to us ; but, unless the employment of this means were continued for a very long time, the bonds which it would form would be feeble. The good which, in this manner, an animal would have received from us, would have been pro- cured by itself, had it possessed the power of acting conforma- bly to its natural disposition. It would also, perhaps, return to its original independence, the moment we might wish to employ it in any service ; for it would find, in this state, more than an equivalent for all that it received from us, namely, the faculty of giving itself up to all its impressions. To attach animals, therefore, itwould not probably be enough to satisfy their wants; more is necessary ; and it is, in fact, by increasing their wants, or by creating new ones, that we attach them to us, and, so to speak, render the society of man necessary to them. Hunger is one of the most powerful of the means which are at our disposal for captivating animals ; and as the extent of a benefit is always in proportion to the necessity which is expe- rienced of it, the gratitude of the animal is so much the more intense, the more necessary the food which we give it has be- come to it. It is applicable to all the mammifera, without ex- ception ; and if, on the one hand, it may give rise to an affec- tionate feehng, it produces, on the other, a physical debility, which re-acts upon the will to weaken it also. It is in this man- ner that the training of horses, which have passed their first yeai's in a state of entire independence, usually commences. 46 M. F. Cuvier on the Domestication After they have been caught, a small quantity only of food is. given to them, and at long intervals ; and this suffices to fami- liarise them to those who take care of them, and inspire a cer- tain degree of affection, which the latter may turn to their ad- vantage, by increasing their authority. If, to the influence of hunger, there be added that of a se- lected food, the power which the benefit possesses may be con- siderably increased ; and this power arrives at an astonishing point, when, by an artificial food, the taste of animals is much more gratified than it would be by a better food, which nature had destined for them. In fact, it is principally by means of real dainties, and especially sugar^ that we manage those her- bivorous animals, which we see submitting to the extraordinary exercises of which our public circuses sometimes afford us the opportunity of witnessing. This agreeable food acts immediately upon the will of the animal. To obtain, by its means, the effect desired, hunger and physical weakening are not necessary ; and the affection which it entertains for its keeper is altogether owing to the plea- sure which the animal experiences ; but this pleasure depends upon a natural want, and all the pleasures which animals may feel, have not, if I may be permitted the expression, so sensual an origin. There is one which we have transformed into a want in some of our domestic animals, which seems to be altogether artifi- cial, and not to address itself to any particular sense ; it is the pleasure of being caressed. I beheve that there is no wild animal that does not ask caresses of the other individuals of its species. Even in our domestic animals, we see the young ones affected with joy on the approach of their mother, the male and the female glad to see each other again ; and individuals, which have been accustomed to live together, happy in being united after separation. But these feelings are never expressed in a striking degree ; and it is but in few instances that they are accompanied with reciprocal caresses. This kind of testimony, in which the plea- sure received is doubled by that given, belongs, perhaps, exclu- sively to man. It is from him alone that the animals have ac- quired the wa,nt ; it is also for him alone that they experience it ; with him only that they satisfy it ; and as the feeling of of Mammiferous Animals. 47 Ii linger may acquire strength when the food increases the sen- suality, in the same manner the influence of caresses may be ex* tended when they more particularly flatter the senses. It is thus that the gentle sounds of the voice add to the emotions excited by the touch, and that these latter are increased by touching the mammae. All domestic animals are not, by any means, equally accessi- ble to the influence of caresses, as they are to the influence of food, whenever they are pressed by hunger. The ruminantia appear to be little affected by them ; the horse, on the contrary, seems to relish them in a very high degree, as do many of the pachydermata also, and especially the elephant. The cat is not indiff\?rent to them ; it might even be said that it sometimes seeks them with a sort of fury ; but it is without dispute in the dog, that they produce the most marked effects ; and what de- serves attention, is, that all the species of the genus which I have had an opportunity of observing, are similarly affected by them. There was once a she wolf in the Royal Menagerie, on which the caresses of the hand and voice produced so powerful an effect, that she seemed to experience an actual delirium, and her joy was not less vividly expressed by her cries than by her motions. A jackal, from Senegal, was affected precisely in the same manner ; and a common fox was so strongly agitated, that it became necessary to abstain from all such expressions of kindness toward it, from a dread of the disagreeable consequences that might follow. It is worthy of being remarked, that all the three animals were females. I do not know whether I may put songs, or harmonious ipo- dulations of the voice, among the number of artificial wants by which the will of animals is captivated. It is well known that the camel-leaders make use of it to slacken or accelerate the pro- gress of the animals which they conduct. But is not this a mere sign with vvhich the march of these animals is associated, as the sound of the trumpet is with respect to horses, which are there- by apprised that the lists are clear, and that they are to be let loose .? I would be inclined to believe so, not knowing any fact that could afford a contrary idea ; for what has been said of the power of mu^c upon elephants, has been viewed with some pre- judices ; at least, so far as my own observation extends, I am con- 48 M. F. Cuvier on the Domesiicatimi vinced that such is the general impression. It would be curious^ however, to enquire on what foundation this association rests, and what relations exist between sound and the hearing of mam- miferous animals, whose voice is so limited as to variation and harmony. It is not, however, sufficient that the means of attachment aU ways precede the acts of docility which are required ; they must also succeed them. Constraint prudently employed does not remain foreign to these acts; and it might be injurious if con- tinued too long. Caresses or dainties make this effect instantly cease ; calmness and confidence are renewed, and quickly weak- en, if they do not efface, the traces of fear. As soon as confidence is obtained and familiarity established ; as soon as, by good treatment, habit has rendered the society of men indispensable to the animal, our authority may be enforced^ and we may employ constraint, and apply chastisement. But our means of correction are limited ; they are confined to blows, accompanied with precautions necessary to prevent the animals from escaping ; and they produce but a single effect, which con- sists in transforming the feeling, whose manifestation it is neces- sary to repress, into that of fear. From the association which results, the first of these feehngs is weakened, and sometimes at length entirely destroyed, even in the bud. But the application of force ought never to be without limits, for its excess produces two contrary effects, it either intimidates, or excites hatred. Fear, in fact, may be carried to the point of disturbing all the other faculties. A naturally timid horse, imprudently corrected, and entirely absorbed by his fright, no longer perceives even the gulf into which he precipitates himself with his rider ; and the spaniel, so adapted by its intelligence to the chace, and so obe- dient to the voice of his master, is converted into an undecided, wild, or trembling animal, when a severity without bounds has presided over its education. With regard to resistance, it al- ways commences on the part of the animal, at the point where our authority passes beyond the limits which time and habit had imposed upon its obedience. These limits vary with respect to each species, and to each individual ; and the moment they are passed, the instinct of preservation re-awakens, and at the same time the will manifests itself with all its force and independence. of MammiferoiiS Animals - 49 How often do we see domestic animals, and the dog itself, revolt against bad treatment, and exercise the most cruel vengeance on those who inflict it. The very individuals which we regard as vitious, and which we name restive, arc only essentially dis- tinguished from those which are possessed of mildness and docility, by more imperious propensities, which often, it is true, no means can captivate, hut which, in many cases also, a more judicious application of those commonly used might serve at least to weaken. I shall not relate the numerous examples of vengeance inflict- ed by domestic animals, and particularly by horses, upon those who had maltreated them ; the hatred which these animals have cherished towards their cruel masters^ and the time during which it has been retained by them in all its original violence. Such examples are numerous and familiar ; and although they ought to have shown that brutality is a means little calculated to ob- tain obedience, they have been ineffectual for this purpose, and animals are still treated by us as if we had nothing to subject in them but their will. I cannot, however, forbear mentioning one example which was exhibited by an elephant, and this less on account of its rareness among us, than from the peculiar charac- ters which accompanied it. This animal was entrusted, at the age of two or three years, to a young man who took care of it, and who taught it various exercises, which he made it repeat for the amusement of the public. It rendered an entire obedience to its master, and felt a lively affection for him. Not only did it submit, without the smallest hesitation, to all his commands, but it was even unhap- py in his absence ; it repelled the advances of every other per- son, and even seemed to eat with a kind of regret, when its food was presented to it by a strange hand. So long as this young man was under the eyes of his father, the proprietor of the elephant, whether the influence of his family re- strained him, or age had not yet developed his bad propensi- ties, he conducted himself with propriety toward the animal en- trusted to his care ; but when the elephant came into the pos- session of the royal menagerie, and the young man, who was taken into its service, was left to himself, things became changed. OCTOBER — DECEMBER 1827. D 50 M. F. Cuvier on the Domestication r'^^ He gave himself up to dissipation, and neglected his duties ; he even went so far, in his moments of drunkenness, as to strike his elephant. The latter, from being habitually cheerful, be- came melancholy and taciturn, in so much as to be thought un- well. It still however obeyed, but no longer with that brisk- ness which shewed that all its exercises were regarded by it as amusements ; signs of impatience were even sometimes manifest- ed, but they were immediately repressed. It was obvious that very different feelings were combating within, but the situation so unfavourable to obedience to which this violent state reduced it, did not the less contribute to excite the discontent of its keeper. It was in vain that the most positive orders were given to this young man never to strike his elephant, and that he was made to see that good treatment alone could restore the original docility of the animal. Mortified at having lost his authority over the elephant, and especially at not going through his exercises with the same success as formerly, his irritation in- creased, and one day being more unreasonable than usual, he struck his animal with so much brutality, that the latter, goaded to the utmost, uttered sucSh a cry of rage, that its terri- fied master, who had never before heard it emit such a terrible roar, ran off precipitately ; and it was well for him, for hence- forth the elephant would not so much as suffer him to come near it ; at the mere sight of him it became furious, and all the means which were afterwards employed in order to inspire it with better feelings, were ineffectual. Hatred supplied the place of love ; indocility succeeded to obedience ; and, as long as this animal lived, these two feelings predominated in it. Benefits on our part are therefore indispensable to bring ani- mals to obedience. As we are not of their species, they do not naturally experience affection for us, and we can only act at first upon them by restraint ; but it would not be so on the part of individuals towards which these animals are attracted by their instinct, which are of the same species, to which a powerful tie tends to unite them, and for which the constraint exercised by their kind is a natural state, a possible condition of their exist- ence. From the moment when they first come together, these ani- mals are opposed to each other in the same manner as the do- of Mammiferoufi Amnials. St mestic animals are opj^oscd to man, after the latter has become necessary to them, has seduced them and captivated their affec* tions ; that is to say, the one may immediately employ force for subjecting the other. It is the elephant, which, by the manner in which it is rendered domestic, furnishes us with an example of this truth. But, to be properly understood, I must first re- late certain facts which I have already developed in my memoir on Sociability. All the social animals, when left to themselves, form herds more or less numerous, and all the individuals of the same herd know each other, and are mutually attached, according to the relations which circumstances and their individual qualities have established among them ; and these herds live in harmony so long as no incident occurs to disturb it. But this sort of attach- ment exists only with reference to the individuals of the same herd ; a strange individual is not at first admitted by them, they almost always receive it as an enemy, and bad treatment often reduces it to the necessity of flying. On the other hand, every isolated individual has need of the society of its fellows ; it seeks them out, approaches them, fol- lows them at first at a distance^, and, in order to be admitted, renounces its will to the point at which the feeling of self-pre- servation determines it to defend itself, or to withdraw. The domestic elephants, obeying the man who leads them, are opposed to an isolated wild elephant, in the same manner as every individual of one herd is opposed to those of another, Avhilc the solitary elephant is irresistibly impelled by its instinct to approach other individuals of its species, and to submit to them within certain limits. Elephants, like all other social animals, might therefore im- mediately employ force for the purpose of subjecting others; and, in fact, this is what takes place in the manner in which wild elephants are reduced to domesticity. Domesticated individuals, commonly females, ai-e conducted to the neighbourhood of places in which wild individuals have settled. If there be in their herd one which is forced to keep separate from the rest, and even to live solitary, or because, be- ing a male, there are stronger individuals in the herd, or, from any other cause, is impelled by his natural propensity, he quickly d2 52 M. F. Cuvier on the Dmnesticatioji discovers Ahe domestic individuals, and approaches them. The masters of the latter, who are at hand, run up, and confine the strange elephant with ropes, being protected by those which belong to them, and which, on the smallest resistance from the new comer, strike it with their proboscis or tusks, and compel it to submit to be led away. The chastisements inflicted by the domestic individuals upon the wild individuals, joined to the good treatment which he re- ceives, soon complete his captivity, or, in other words, soon bring about the period when his will conforms itself to his new situation, when his wants are in accordance with the commands of his master, and when he submits to the various labours allot- ted to him, and which habit soon renders easy ; for it is said that a few months only are required to transform a wild ele- phant into a domestic one. So long as animals are, to a certain degree, susceptible of af- fection and fear, — so long as they can attach themselves to those who treat them well, and dread those who punish them, it is sufficient to develope in them these feelings, in order to weaken those which might be opposed to them, and to give ano- ther direction to their will. This is what we have obtained by the application of means, which now form the subject of our in- quiries and observations. But it happens, either from the na- ture of individuals, or from the nature of species, that the en- ergy of certain propensities acquires such power that no other feeling can overcome it, and under the empire of which no other feeling can ever arise. For such animals, neither good treat- ment nor correction will suffice, neither the one nor the other would operate effectually ; they would even be nothing else than new causes of exercise to the will, and, in place of weaken- ing, they would exalt it. It is therefore indispensably neces- sary, with respect to animals which experience so imperious a desire of independence, to commence with immediately acting upon their will, to deaden their rage, in order to render them capable of fear or gratitude ; and, for this purpose, the happy idea was suggested of submitting them to a forced state of watch- fulness or to castration. According to all accounts, it appears, that the first of these means, namely, a forced state of watchfulness, is of all the modifi- of' Mainmif'erous Animuls, 5S cations which an animal may experience, without its being muti- lated, that which is best adapted to weaken its will, and dispose it to obedience, especially when benefits and chastisements are prudently associated with it ; for then the affectionate feelings experience less resistance, and take root more quickly and more deeply, and fear, for the same reason, acts with more prompti- tude and more force. The means which may be employed for suspending sleep, consist in strokes of a whip, applied more or less smartly, or in a loud noise, such as that of a drum or trumpet, which is va- ried to avoid the effect of uniformity, but especially in render- ing hunger urgent, by withholding food ; and among the ob- servations to which these different modes of procedure give rise, there is one which it will not be without interest to dwell upon for a moment, although it does not result exclusively from the parti- cular case which we examine, but presents itself under a va- riety of other circumstances. It shews us, that animals do not know to refer to their cause the modifications which they expe- rience through the medium cff sound, whenever certain particu- lar relations do not exist between them and their causes. When an indocile stallion or bull is struck, it does not mis- judge regarding the cause of its pain, but immediately throws itself vipon the person who has directed the blow, — even when it may have been struck by a projectile, like the boar which rushes upon the hunter whose ball has wounded it. I do not examine whether experience has any thing to do with their ac- tion ; this much is certain, that whatever experience these ani- mals may have of the noise from which they suffer, they are ne- ver able to refer the cause, either to the instrument which pro- duces it, or to the person who employs this instrument. They suffer passively, as if they experienced an internal disease ; the cause, hke the seat of their uneasiness, is in themselves, and yet they very correctly discern the direction of the noise. The moment they are struck by a sound, their head and ears are di- rected, without the slightest hesitation, toward the point from which it proceeds ; there are even animals in which this action is instinctive, and precedes all experience ; and with regard to the sensations, I might add, that the bull acts upon seeing a red ray, as he would under the impulse of blows. The cause o[ 54j M. F. Cuvier on the Domesticatioii the modifications which he experiences^ is in both cases entirely external ; which shews us farther, that if the horse and the bull do not refer the sound to the instrument which produces it, it is less on account of the distance which separates them from the instrument, than on account of the peculiar nature of the sensa- tions of hearing. The above means are applicable to all animals, and to both sexes, although they do not produce the same results in all. The means of castration applies only to the male individuals ; and it is absolutely necessary only for certain ruminantia, and chiefly for the bull. Almost all the natural wants, when not sa- tisfied, especially when their object is to repair the strength, such as hunger and sleep, are accompanied with a physical weakening. There is one, on the contrary, which seems to in- crease in proportion as the obstacles which oppose it increase, until it is satisfied ; it is love. As we are unable to exercise any immediate controul over it, we mutilate the animals, which experience its effects too strongly, by removing the organs from which it has its principal source. In fact, the bull, the ram, &c. do not really submit to man until after their mutilation ; for the influence of the spermatic fluids extends in them, as also in all the other animals, much beyond the seasons at which the desires of love are experienced. At no period of their lives have these animals the docility which domestication requires ; whereas the ox and the sheep have al- ways been looked upon as models of patience and submission. Hence it follows, that bulls and rams are useful only for propa- gation ; and that in the ram it is only the female that is do- mesticated. This operation is not necessary in horses, although those which have undergone it are generally more tractable. The dog, on being castrated, loses all its vigour and activity ; and this effect appears to be common to all the carnivora, for the domestic cat is in this respect precisely in the condition of the dog. It is therefore by wants, over which we are able to exercise some influence, which it depends upon us to direct, to develop, or to destroy, that we are enabled to tame, and even entirely cap- tivate animals ; and, from the small number of them of which of MammifcrwiS Animals. 55 we have hitherto taken advantage, we may be eillowed to think, that, in practice, we have not yet exhausted this source of the means of seduction, — and that others might be brought to our aid, should new species to be rendered domestic, or new ser- vices to be demanded of those which already are so, enforce the necessity of searching them out, and induce us to make the at- tempt. Although, however, the number is thus limited, it will easily be conceived, that, in applying them to animals of very different natures, the results obtained must vary in a high de- gree. In fact, scarcely any comparison can be instituted be- tween the dog and the buffalo in this respect. While the one is a pattern of attachment, submission, gratitude, fidelity, and de- votedness, — the other is destitute of every benevolent and affec- tionate feeling, and of all docility.* Between these two extremes, come the elephant, the hog, the horse, the ass, the dromedary, the camel, the lama, the rein-deer, the goat, the ram, and the bull, which could all be characterised by the qualities which have been developed in them by the influences to which we have subjected them ; but this subject would lead me too far beyond the limits which I ought to prescribe to myself in a mere me- moir. Hitherto I have only coi^idered the general effects which tl:e various means, described above produce upon domesticated ani- mals. It will not be useless to cast a glance over those which they produce in wild animals ; for the comparison that will re- sult, will perhaps assist us in eliciting the first elements of do- mestication. The monkeys, that is to say, the quadrumana of the old world, which, to the highest degree of intellect in animals, unite the organization most favourable to the development of all the fa- culties — which have the propensity to unite together, and form large herds, — appear to possess the conditions most favourable for receiving the influence of our means of taming, — and yet no adult male of this numerous tribe has ever submitted to man, whatever good treatment it may have received. I intend con- fining myself to the guerons, macaci, and cynocephali ; for the orangs, gibbons, and semnopitheci, are animals as yet too little known to us to have ever been subjected to experiment. With regard to the former, their sensations are so vivid, their infer- 56 M. F. Cuvier on the Domesticatimi ences so prompt, their natural distrust so great, and all their feelings so violent, that it were impossible, by any means what- ever, to confine them to any particular order of circumstances, or habituate them to a determinate situation. Nothing could quiet their desires, which change with all the modifications they experience, and, even to a certain degree, with all the motions that are performed around them : hence we have never been able to count upon any good feehng on their part ; at the mo- ment when they are giving the most striking tokens of affection, they may be induced to tear one with fury ; and there is no treason in this, for all their vicious qualities depend upon their excessive mobility. It appears, however, that, by violence, and by continually keeping them in torment, they may be induced to perform cer- tain exercises. It is in this manner that the islanders of Sumatra succeed in teaching the Macacus nemestrirms to ascend trees on being ordered, and collect the fruits ; but it is only individuals that are thus trained, and where force is necessarily employed ; domestication is not yet effected. It is in consequence of the same treatment that we see some of these animals, and particularly the magot (Macacus inuus), learn to obey their master, and to perform those adroit and ac- curate leaps, to execute those bold dances which their organiza- tion and their natural dexterity render easy for them, and which often strike us with astonishment. Yet they are so exclusively subjected to force, that, whenever they can escape, they run off, and never appear again, if they happen to be in countries to which they can accommodate themselves, and which are calcu- lated to afford them the means of subsistence. We should better succeed in taming the American quadru- mana with pendent tails, such as the ateles, and sapagons, which, to a high degree of intellect and the social instinct, may join an extreme gentleness and a lively desire of being caressed. With regard to the Lemuridae, so many difficulties would be encoun- tered in taming them, and so few advantages obtained, on ac- count of their untractable and timid nature, that the uselessness of making the attempt would have been discovered, had it been tried. And the same remark applies ^o the Insectivora, which 4 of Mmmniferous Anirtuds, 57 would, moreover, have the disadvantage of a very limited intel- lect, and of an unfavourable organization of limbs. The carnivora, such as the lions, panthers, martins, civets, wolves, bears, &c. all of them species which live a solitary life, are very accessible to benefits, and little susceptible of fear. In a state of liberty, they retire from danger ; in captivity, violence irritates them, and seems especially to carry confusion into their intellect; anger and fury then possess them. But let their wants be satisfied when they feel them keenly ; let them expe- rience goodness only on the part of their masters ; let no sound of the voice, no motion, give indication of a menacing character ; and these terrible animals will soon be seen approaching their benefactors with confidence, manifesting the satisfaction which they experience on seeing them, and affording the most unequi- vocal demonstrations of their affection. A hundred times has the apparent mildness of a monkey been followed by treachery ; but never have the outward signs of a carnivorous animal proved deceitful. If it is disposed to hurt, every thing in its gestures and look will announce it, and the same will be the case when it is animated by a benevolent feeling. Lions, panthers, and tigers have often been seen yoked to carriages, and obeying their, drivers with much docility. Wolves, trained for hunting, have been seen faithfully to follow the pack to which they belonged, and the exercises which bears are made to perform are well known. But although we have been able to habituate these animals to obedience, although we may have succeeded in training them to certain exercises, we have not gone so far as truly to associate them with us ; and yet what services might not man derive from the lion or bear, were he able to em- ploy them as he has succeeded in employing the dog. The seals, which are all social animals, and possessed of un- common degree of intellect, are, perhaps, of all the carnivora those which would undergo the greatest modifications from our good treatment, and which would perform, with most facility, what we might require of them. The glires, that is to say the beavers, marmots, squirrels, hares, &c. seem only to be endowed with the faculty of feeling, so little activity has their intellect. They retire from whatever causes them pain, and, on the other hand, approach whatever is 58 M. F. Cuvier oii the Domestkation agreeable to them,' whence they can be habituated to certain conditions, and even to certain exercises, but they distinguish these causes but very imperfectly ; they appear to exist for them only when they act, and to form but little association in their memory. The animal of this tribe, to which we have done most good, docs not distinguish us individually, and shows no more satisfaction at our presence than at the sight of any other per- son ; and this is equally true with regard to those which live in society as with regard to those which lead a solitary life. If we pass to the tapirs, the peccaris, the daman, the zebras, &c. in a word to the pachidermata and solipeda, we find ani- mals living in herds, which pain may inspire with fear, and good treatment render grateful, which distinguish their masters, and sometimes form very strong attachments to them. A similar effect takes place, to a certain degree, with the ru- minantia, but principally the females, for the males, without any exception I believe, have a brutality which bad treatment in- creases, and which good treatment does not soften. We learn, therefore, from the facts which have come under our consideration, what influence the various means which have been devised for bending animals and attaching them to our service exercise upon them ; but they disclose nothing to us re- garding the dispositions which are necessary in order that do- mestication may result from this influence ; for we have seen that several animals receive this influence like domestic animals, without, however, becoming domestic. Were our action upon animals limited in individuals, were it necessary for us, at each generation, to recommence the same la- bour, in order to associate them with us, we should not have had, properly speaking, domestic animals ; at least domesticity would not have been what it really is, and its influence, upon our civi- lization, would not have had the results which the wisest ob- servers must have discovered it to possess. Fortunately this ac- tion is connected with one of the most important and most ge- neral phenomena of animal nature ; and the modifications which we have made those animals undergo, which we have first re- duced to domesticity, have not been lost with respect to those which have been produced by them. of Mammiferous Animals. 69 It is a fact universally recognised, that the young of animals have a very stmng resemblance to the individuals which liave given life to them. This fact is as obvious in the Imman spe- cies as in any other ; and it is not less true with reference to the moral and intellectual faculties, than to the physical qualities. Now, the distinctive qualities of animals of the same species, those which have most influence over their particular existence, which constitute their individuality, ai'c those which have been developed by exercise, and whose exercise has been called forth by the circumstances amid which these animals have lived. Hence it follows, that the qualities transmissible by animals tjo their young, those which give rise to a mutual resemblance in them, are of a nature to arise from fortuitous circumstances; and, consequently, that we are enabled to modify animals and their progeny, or their race, within the limits which bound our power to produce the circumstances calculated to act upon them. What is thus established by reasoning, the observation of domestic animals fully confirms. It is we who have formed them, and there is none of their race that has not its distinct qualities, — 'qualities which make such or such particular race to he preferred to any other, according to the purposes for which it is intended, and which are constantly transmitted by genera- tion, so long as circumstances opposed to those which have occa- sioned them do not destroy the effects of these latter. It is by this means that we are enabled to preserve the races in their purity, or to obtain by their mixture races having new qualities, intermediate between those which have been united. But all these facts are so well known, that I consider it superfluous to dwell particularly upon any of them. It will not, however, be useless to remark, that the most do- mestic races, those which arc most attached to man, are those which have experienced on his part the action of the greatest number of the means, the use of which we have seen for render- ing theni' attached. Thus the dog species, on which caresses have so much influence, without distinction of sex, is indisputa^ bly the most domestic of all ; while the ox species, the females of which alone experience our influence, and on which we have had no other means of acting, for the purpose of attaching them to us than feeding, is certainly that which least belongs to us. 60 Mr F. Guvier on Mammiferous Animals. And this difference between the dog and the ox would still ne- cessarily be increased by the difference of fecundity of these two species. In fact, the dog, in an equal time, submits to our in- fluence a much greater number of generations than the ox. We are ignorant what dispositions the dog originally had to become attached to man and to serve him, and upon which consequently man might have acted to bring him to the degree of submission to which he has arrived ; but there is every reason to believe that they were numerous ; and with the promptitude with which the elephant becomes domestic, it is extremely probable that if our in- fluence could be exercised over a certain numberof its generations, it would become, like the dog, one of the most submissive and affectionate of our animals, inasmuch as all the means adapted for rendering animals domestic are calculated to modify it. Unfortunately no pains have been taken in attempting to make it breed ; and, in the countries where its services have become necessary, the natives have contented themselves with taming individuals. This transmission of individual modifications by generation does not, however, aflbrd a basis to domestication, although it is indispensable to it. It is a general phenomenon which has been observed in the wildest animals, as in those that have been most subjected to our will. Let us inquire, there- fore, now that we know the animals which are associated with us, what is the disposition common to some and foreign to others, which might be regarded as essential to domesticity ; for with- out a particular disposition, which would second our efforts and prevent our empire over animals from being merely accidental and transitory, it is impossible to conceive how we should have succeeded. {To he concluded in next number.) On a new Chjrogonite^ or Fossil Capside of the genus Chara, occurring very abundantly in the fresh-water Limestones of the neighbourhood of Paris. By M. Constant Prevost. X. HE author commences with a historical account of the Gy- rogonites, in which he relates all that has been said regarding these small bodies, which are now generally considered as fossil seeds of the genus Chara. In Forfarshire, the analogous fossil M. Prevost on a New Gyrogcmite, 61 charae form part of one of the newest deposits, the formation of which, if it does not belong to the present period, is at least more recent than the diluvian deposits on which the Forfar marls rest. On the contrary, the gyrogonites observed by M. Constant Pre- vost, in the upper fresh water limestones of the neighbourhood of Paris, are connected with an older formation, probably ante- rior to the great revolution which has left the globe in its pre- sent state. This difference of position it is of importance to remark, because it serves to connect, by insensible shades, the productions of nature as it exists at present, with those of the period when the soil on which we now live was formed. The new gyrogonite observed by M. Constant Prevost, is not less abundant in certain localities of the heights of Montmorency, than the gyrogcynites medicaginula along with which it occurs. It differs essentially from this latter in its form, which is elon- gated ovoidal ; in its size, which is less by a half or even two- thirds, a circumstance which renders it scarcely perceptible with- out the aid of a glass ; lastly, in the number of spiral turns, which, in place of being six, vary from nine to ten. These characters prevent our confounding the new gyrogonite with the two species described by M. Ad. Brongniart, and they serve to approximate it to the fossil which M. Ch. Leyell has made known, and consequently to the capsules of Clmra vulgaris at present so common in the waters of numerous marshes, which exist upon the very soil filled with analogous fossil bodies. The distinction becomes so much the more difficult to be established, that in the seeds of the same species of chara^ gathered from the same stalk, there are perceived in the size, the more or less elongated general form, the number of spiral turns, differences which some might consider sufficient to estabhsh several genera. M. Constant Prevost has found similar variations in the fossil gyrogonites, of which he has a great number in his possession. Most of these, as in the G. medicaginula^ have lost their outer covering, and the part preserved, or rather replaced, is only the internal nucleus of the capsule, of which, however, the impres- sion is frequently preserved in hollows in the compact silex. These petrifactions are seen principally in blocks of white and compact fresh water silex, which affect irregular rounded forms, representing geodcs, which are disseminated without order in 62 M. Prevost oji a New Gyrogomte. the midst of clay, marbled with red and bluish colours. These siliceous blocks, which are often hollow in their interior, are filled with the same clay, and with an immense quantity of G. medicag^inula, and of the new species. In that case, the fossils are free, and it is easy to separate them from the clay by washing. The residuum obtained by this operation, appears to the naked eye to be nothing but a very fine sand ; but, with the assistance of a lens, it is distinctly seen that each grain is a part or a complete mould of one of the two gyrogonites, or a broken fragment of stems, the structure of which differs in no way from that of the stems of the genus Chara. Nitric acid pro- duces no effect upon these parts, which renders it probable that they have been transformed into silex. When nitric acid is poured upon the dried, and even the fresh, capsules of recent chara, it causes a lively effervescence, produced by the decomposition of a great quantity of carbonate of lime, which is contained in the outer envelope of the capsule, as well as in the stems. This effervescence destroys the opaque part of the envelope ; and the nucleus, which is almost, in every respect, si- milar to those that have become fossil, remains untouched in the liquid. It ought to be remarked, on this occasion, that, in the calcareous rocks which contain fossil gyrogonites, it is the outer envelope that has been preserved, while the nucleus has disap- peared, — a result the reverse of what the siliceous rocks dis- close. M . C. Prevost found the same gyrogonite in the fresh-water flints of Nogent le Rotrou, which were given him by M. J. Desnoyers, who has also some specimens of a greenish compact limestone, resembling, in its mineralogical appearance, some beds of Jura limestone, of the Department de la Manche ; in which country the specimens were found in digging wells. They contain a globular gyrogonite, which differs, in some points, from the G. medicaginula. Some fresh- water marls of the vi- cinity of Epernay, collected by M. Deshayes, are filled with gyrogonites which are also globular, but less perfectly so, and larger than the G. medicaginula, and, perhaps, similar to those already pointed out by M. Bigot de Morogues. There has also been observed in the deposits, superior to the Fountainbleau sandstone, above Valvin, a constant variety of elongated gyro- M. Prcvost on a ^ew Gyrogonite.. 63 gonitc, larger than that which forms the j)iuu'i|)al object ot the present notice. If, to all these indications, there Ikj added the description of tubercular gi/rogonite^ discovered by Mr Charles Lyell in the Isle of Wight, it will be seen that the genus of fossil Chara is an object of much interest to the botanist and geologist. There remain, without doubt, many fossil species to be discovered, but it is of importance that the gyrOgonites receive specific names only after a preliminary examination of the Chara, at present existing, may have fixed the limit of the possible differences in the capsules of the same plant, and deter- mined the value of the parts which are capable of furnishing distinctive characters. This philosophical object cannot be bet- ter attained than by the naturalist who first discovered the ex- istence of fossil Charae ; and the circumstance, that M. Leman is at present occupied with a work on the subject, prevents the author of this notice from bestowing a new name upon the gy- rogonite which he imagines he was the first to observe. Notice regarding Fossil Remains ^ound in Ava. T] HE Calcutta Government Gazette contains the following account of the fossil remains brought to Calcutta, on account of Government, from the Burmese Empire, by the late mission to Ava. " Of the fossil bones, the most numerous and remarkable are those of an animal about the size of a large elephant, stated to be the bones of the mammoth. This is a mistake. The mammoth is an extinct species of the elephant, differing from the two living species, the African and Indian. The remains of this animal have only been found in Europe, and chiefly in Siberia. The Burman fossil bones are unquestionably those of the mastodon, as may be clearly seen, by comparing, as I have done, the grind- ers with those of the Indian elephant, as well as the accurate de- scriptions and representations of both in the work of Cuvier. In the different species of elephants, the crown of the moiares, or grinders, is marked by superficial transverse bands. In the mastodon, the form is widely different, the crown being marked 64 Notice regarding Fossil Remains Jbund in Ava. by deep transverse furrows and ridges, the latter divided into two or liiore obtuse pyramidal points or mammillae. It was this singular appearance which made the mastodon a long time be considered erroneously as a carnivorous animal. Five species of the genus mastodoix are supposed by Cuvier to have been discovered, and I imagine the bones now under con- sideration will be found to constitute a sixth species ; for the mo- lares, on which he principally rests for his specific distinctions, differ very materially from the representations which he has given of the ascertained species. The mastodon of Ava, if it be a distinct species, will be found equal in size to the great mastodon of the Ohio, which is reckoned to be equal in size to the Indian elephant. A grinder, which I examined, measures, in circumference, between sixteen and seventeen inches, and the circumference of a humerus round the condyles is not less than twenty-five inches. Several of the grinders and bones, however, apparently of an animal of the same species, are much smaller than these, but this is probably on account of their belonging to younger individuals. I need hardly observe that our mas- todon, like others of the same genus, and all the species of the elephant, had tusks. Several fragments, but no entire tusks, are in the collection. " The next most remarkable remains are those of the fossil rhinoceros. There are several molares of an animal of this ge- nus in the collection. Cuvier describes four species of the fossil rhinoceros to have been ascertained, all differing from the living species. The bones, now found, bear a striking resemblance to one of the species represented by Cuvier ; but the molares are considerably larger than any of those which he has represented. The collection seems to me to afford evidence of the existence of two other animals of the same family with the elephant, mas- todon and rhinoceros ; at least, teeth, which I have seen in it, exactly resemble two species of a genus represented in the work of Cuvier, and to which he gives the name of Anihracotherium. " The other teeth of quadrupeds which exist, and which I am able to recognise, are those of an animal of the horse-kind, and those of an animal of the ruminant family, apparently of the size of the buffalo. " Among the remains are numerous specimens of those of a Notice regarding Fossil Remahis foimd in Aviu 65 crocodile, which I conjecture to resemble the long-nosed alliga- tor of the Ganges, the native name of which !ias been corrupted by naturalists into GaviaL It is singular that this description of alligator, as far as we know, is not at present found in the rivers of Ava. In the same situation with the bones were found considerable quantities of fossil shells. Some of these were filled with blue clay, but far tlic greater number with hard siliceous matter. The shells which I have seen are of the genus Turbo and genus TelUna *, and the productions of fresh water, although they do not, at the same time, resemble the present shells of the lakes and rivers of the neighbourhood. The fossil wood is found in the same situation with the bones and shells. This is in vast quantity, the hills and ravines being strewed with blocks and fragments of various sizes, some of them five and six feet in circumference. The fossil remains now enumerated are found on the left bank of the Irawadi, and within four and six miles inland fVom the river, between the twentieth and twenty-first degrees of north latitude, and close to the celebrated wells of Petroleum. The aspect of the country is very remarkable. It is composed of sand hills and narrow ravines, very sterile, and, for a tropical country, very deficient in vegetation. Among the sand there are beds of gravel, with iron-stone and calcareous breccia. The whole is evidently a diluvial formation. The few scattered trees which exist in this tract, consist of some Acacias, a Celtis, a Hhus, a Barringtonia, a ZizT/phus, and some Indian fig trees. To say whether or not the fossil timber found belongs to the same species as these, would be a matter of difficulty : but, up- on the whole, it may be said that the blocks appear too large to warrant a belief that it docs. The fossil bones, as well as the shells and wood, are all found superficially, or rather indeed upon the surface, for all of them were more or less exposed. Notwithstanding this exposure, they have suffered very little decomposition. They are not rolled, nor have they suffered from attrition, for their sharp edges and processes are preserved with great distinctness ; tlic inference from which is, that the individuals to which they be- • Probably of the genera Cyclosioma and Cyclas, — Ed. OCTOBER— DECEMBER 1827. B 66 Notice regarding Fossil Remains found in Ava. longed died, or were destroyed, on tlie spot en which they are now found. In one respect the bones differ essentially from all fossil bones of which I have heard. They are complete petri- factions, and all of them more or less deeply coloured with iron. Their substance is siliceous, and some of them are so hard as to strike fire with steel. This no doubt accounts, in a good mea- sure, for their perfect state of preservation. The wild quadrupeds of the neighbourhood, at present, are a species of leopard, cat, deer, and the hog. The bones of these do not seem to exist among the fossil remains, nor is there any evi- dence of those of the elephant, or of any carnivorous animal. As amongst similar remains in other parts of the world, not/ji vestige is to be discovered here of the human skeleton. I need hardly attempt the refutation of the idle notion which has been entertained by many, that the fossil remains found on the banks of the Irawadi have been generated by a petrifying quality in the water of that river. Abundance of organic mat- ter may be seen on the shores of the Irawadi, both animal and vegetable, undergoing the common process of decomposition as elsewhere. There can, I think, be no doubt that the fossil bones, shells, and wood, are here, as similar remains are admit- ted to be elsewhere, all the result of the last, or one of the last, great catastrophes which changed the face of the present globe. They are, in fact, the remains of a former state of our world, when the greater number of the present races of animals had no existence, and, above all, before man was called into existence. The collection is altogether both extensive and curious, and the more worthy of attention, since it is, as far as I am aware, the first of any moment that has ever been discovered in the East. Report made to the Royal Academy of Sciences of Paris, upon a Memoir by M. Constant Prevost, entitled An Eocaminatio7i of the Geological Questicm, whetJier the Continents which we ijiJtabit Imve been repeatedly submersed by the Sea. By Mess. CUVIEB & COEDIER, JL HE author, in the first place, endeavours to prove, that, among the sedimentary and alluvial formations j there is no bed On the Svhmcrgence ofContments. 67 that could be considered as representing an old continental sur- face, that might have been long covered with terrestrial vegeta- bles, and inhabited by land animals, before being enveloped by marine deposits. He shews, that he has in vain sought the traces of old continental surfaces in contact with the marine and fresh water formations, which alternate in several parts of France, Germany, and England. He unfolds the reasons for thinking that the remains of vegetables, which are sometimes found in a vertical position in sandstone of the coal formation, owe this po- sition only to chance. The presence of remains of mammifera, whether in the diluvian strata properly so called, or in caves an- terior to these strata, appears to him to afford no better evidence that the sea has overwhelmed a soil previously inhabited ; and he ultimately arrives at the conclusion, that the countries which are occupied by alluvial and sedimentary deposits, were covered by the waters during the whole time that these deposits required for their formation. The author then carefully enumerates the principal circum- stances which characterize the formation of the deposits which take place in our own days in lakes, at the mouths of rivers, on the shores of the ocean, and in all the parts of its basin which have little depth. Among these deposits, he distinguishes those which result from more or less rapid currents, and those which proceed from quiet precipitations; those which belong to the shores, and those formed in the open sea. He calls to mind the fact, that rivers frequently carry out to great distances continen- tal organic remfdns of all descriptions, and that the waters of the sea, accidentally raised from their basin, sometimes make mo- mentary irruptions over surfaces of great extent, which are com- monly occupied by marshes, lagoons, and lakes, the bottom of which is incontestably formed by deposits filled with fluviatile and terrestrial organic remains. He makes various remarks up- on the nature of the moUusca, which live isolated or in families, near the shores, or at a distance from them. Lastly, he shews, that, by the concurrence of presently existing causes, the English Channel (La Manche) ought to contain alternations of strata ana- logous to those which constitute the lower part of many tertiary formations ; that >verc the level of the' sea lowered twenty-five fathoms, this strait would be changed into a vast lake ; and that "68 On the Submergence of Continents. after a certain lapse of time, there vvould necessarily be formed a series of strata analogous to those which occur in the upper part of the same deposits of various countries. Proceeding from these data, and supposing, in general, that the level of the sea has actually imdergone a slow and progres- sive lowering from the origin of things, the author undertakes to explain the manner in which the tertiary deposits of the neighbourhood of Paris have been formed, as well as those which constitute their continuation, whether extending to the Loire, or across the Channel in the neighbourhood of the Isle of Wight. Considering all these deposits as belonging to an an- cient basiuj he represents their constitution by means of two transverse sections, in which he has brought together all the ob- servations that have hitherto been collected, and which afford a precise idea of the alternations, mixtures, and entanglements which the various deposits present. The author is of opinion that these sections are sufficient, with the aid of the explanations an- nexed, to shew that marine strata of chalk, coarse limestone, marls, and superior sandstones, have been formed in the same basin, and under the same waters, as the plastic clay, the sili- ceous limestone, and the gypsum itself, which essentially con- tain remains of terrestrial and fluviatile animals and vegetables ; but he does not fail to add to his system of explanation, all the details and inductions which appear to him calculated to insure probability. The following is a brief statement of his views. First Epoch. — A calm and deep sea deposits the two varie- ties of chalk which constitute the sides and bottom of the great tertiary basin in question. Second Epoch. — In consequence of the progressive lowering of the ocean, the great basin becomes a gulf, in which matters carried down by the rivers form chalky brecciae and plastic clay, are soon covered by the marine spoils of the first coarse lime- stone. Third Epoch. — The deposits are interrupted by a commo- tion which breaks and sensibly displaces the strata. The basin becomes a salt lake, traversed by voluminous currents of water coming alternately from the sea and the continents, and which produce the mixtures and entanglements presented by the se- On tJte Submergence of Coniinenls. C9 cond coarse limestone, the siliceous limestone, and the gypsum deposits. Fourth Epoch. — Irruption of a great quantity of fresli water, charged with clays and marls, in the midst of which there are still found some deposits of marine bivalve shells. The basin is now only an immense brackish pool. Fifth Epoch. — The basin ceases to communicate with the ocean, and the level of its waters falls below that of the waters of the sea. The muddy deposits of the continental waters con- tinue. Sixth Epoch. — Accidental irruption of the ocean, which de- posits sands and the upper marine sandstones. Immediately after, the basin, nearly filled up, contains only fresh water of little depth ; it receives fewer streams ; vegetables and animals are established in it ; the buhrstones and the fresh water lime- stone are deposited. Seventh and Last Epoch. — The succession of these various operations is terminated by the diluvian cataclysm. From the preceding analysis, it will be seen that the object of M. Prevost's memoir is not to make known new facts, but to bring together a great number of curious facts, to discuss their characters, to determine their influence, to compare those which appear capable of comparison, and to endeavour to get at the causes by means of certain suppositions which may be more or less probable. Attempts of this kind have certainly their im- portance and their utility in geology ; they present, liowever, great difficulties, and we ought to be the more indulgent to M. Prevost for having engaged in them, that he has done so with remarkable ingenuity. We have therefore the honour of pro- posing to the Academy that his memoir be printed in the Ke^ cueil des Savans Etrangers. On tlve History and Constitution of Benefit or Friendly Societies. By Mr W. Fraser, Edinburgh. Continued from p. 296 of former Volume. N the preceding Number of this Journal a summary was given of the investigations of the Highland Society of Scotland, and of a Select Committee of the House of Commons in 1825, into the 70 Mr W. Fraser on the History and Constitution of average rate or Law of Sickness among mankind, as deduced from the experience of numerous Friendly Societies in Scotland, and from the Monthly Reports of the whole army quartered in Britain during the years 1823 and 1824. It was likewise stat- ed, that another Select Committee had been appointed by the House of Commons in 1827 to make farther inquiries into the same subject, and other matters connected with Health and Life Assurance. The Report of this latter Committee was presented to the House at the close of the last session of Parliament, and, along with the Minutes of Evidence on which it was founded, ordered to be printed. This interesting document contains much additional information on subjects of the utmost import- ance to all classes of the community ; a brief detail of which shall be given in the following pages. The Report commences with stating, that the Committee of 1825 having entered minutely into all matters connected with Friendly Societies, the Committee of 1827 have not gone into any farther investigation as to sickness, but have chiefly confin- ed their attention to those points upon which the former Com- mittee had come to no conclusion. The opinion, however, of Messrs Finlaison and Davies, two eminent actuaries, was re- ' quested as to the proper contribution required for a given bene- fit during sickness ; and these gentlemen accordingly gave in a report, exhibiting in a very brief form, all that is essentially necessary for securing the stability of such societies as limit their benefits to allowances during sickness, in old age, and at death. These comprehensive rules^ which the Committee have recom- mended for general use, will be given when we come to treat of the rates of contributions and benefits ; but it may here be ob- served, that, in giving their opinion, these actuaries had no other materials from which to calculate the probable rate of sickness, than those which had been before the Committee of 1825. Their data, therefore, consisted of a rate of sickness assumed by Dr Price— of that deduced by the Highland Society from the experience of numerous Friendly Societies in Scotland — of the rate assumed by the Reverend Mr Becher of Southwell, in Nottinghamshire, — and of that found to prevail in the army from the official returns at the Adjutaiit-Gcnerars Office. This latter rate, however, we formerly remarked, could not, for the Benefit or Friendly Societies, 71 reasons then assigned, be applicable to the members of Friendly Societies ; and it appears that Messrs Finlaison and Davies are now of the same opinion, for they state, " that this is a rate of sickness which certainly exceeds all estimate of what has hither- to prevailed among the labouring classes, and arises, no doubt, from causes to which the members of friendly societies in gene- ral would not be subject."" But these gentlemen also state it to be their opinion, that the rate of sickness reported to the High- land Society falls short of the proportion that would be experien- ced in the practice of Friendly Societies in England, in the same degree that the .sickness of the army is excessive ; and they have therefore taken a mean between the two, in calculating their rate of contribution for benefit during sickness. As, however, this mean is, under 50 years of age, double that reported by more than 70 Friendly Societies in Scotland, comprising up- wards of 100,000 members, — and, as no reason whatever is giv- en by these gentlemen why the rate of sickness should be so very much higher among the same classes in England, the accuracy of their conclusion may at least be doubted. At all events, as no additional information has been obtained on this subject ,by the last Committee, we cannot but still adhere to our former opinion, — that the law of sickness deduced by the Highland So- ciety of Scotland is the most satisfactorily authenticated of any yet published. Law of Mortality. The next, and perhaps the most important, question that falls to be considered, is that regarding the rate or Law of Mor- tality. Tables of Mortality, it is well known, are intended to shew how man/ persons, out of a given number at any age, may be expected to survive to a nigher age ; and, consequently, these tables form the basis of all calculations for Health and Life Assurance. Such tables have been hitherto formed from regis- ters of mortality, which usually include the marriages and births, as well as bu- rials— from bodies of annuitants — and from actual surveys or enumerations of the proportion of deaths among persons living at the same ages in countries and in towns. Mortuary registers were begun to be kept in Germany about the end of the 15th century ; and, in 1538, the incumbent of every parish in England was ordered, by the Privy Council, to keep an exact account of all the weddings, christenings, and burials within his district. This duty, however, seems to have been for a long time very ill discharged; and it was not till about 1690, that the ages were first inserted in the buls kept at Breslaw in Silesia, and not till 172H, in those kept at London. In 1749 the government of Sweden *' established what in this country would probably be called a Board of Popu- lation, but is there denominated Tabclvarkcty for reducing into convenient forms the extracts from the parish registers, and the returns from the magis- 72 Mr W. Frascr on the History and Const'itntion of trates of the numbers of the people, which the governors of the different pro- vinces are required to state to the commissioners appointed for these purposes. The extracts from the registers are made and transmitted annually, but the enumerations only once in three years. Printed forms, with proper blanks, distinguishing the ages and sexes, both of the living and the dead, with the dis- eases the deaths were occasioned by, are distributed throughout the country to enable the people to make these returns correctly and uniformly ; and the information thus acquired, respecting the state of population and mortality, is much more correct and satisfactory than what has been obtained in any other place of considerable extent."* The first table of mortality was constructed by Dr Halley from the regis- ter kept atBreslaw for the five years ending with 1691 ; and Mr William Kersse- boom of the Hague, published a tract in 1742, in which he gave a table of mortality formed from registers, kept for nearly 130 years, of many thousand life annuitants in Holland and West Friesland. JNIr Nicholas Struyck also published at Amsterdam, about the same time, two tables of mortality from registers of annuitants kept there for about 35 years, — one of these tables shewing the mortality of females, and the other that of males, but both, when combined, agreeing very nearly with the table of Dr Halley. In 1742, like- wise, Mr Thomas Simpson gave a table of mortality for liondon ; and in 174G, M. Deparcieux published an essay at Paris, in which he inserted six ne»v and valuable tables of mortality, one of them constructed from the lists of the no- minees of the French Tontines, principally for the years 1G89 and 1696, and the others from the mortuary registers of various religious houses in France. Four of these shewed the mortality of the monks of different orders, and the fifth that among the nuns of different convents in Paris. Dr Price, in the first edition of his Observations on Reversionary Payments, published in 1771? gave three new tables of mortality, constructed from the London, Norwich, and Northampton bills ; and in his second edition in 1772, five other tables, likewise new, for various places on the Continent and in England. In his fourth edition, which appeared in 1783, he gave some other new tables of mor- tality, for Warrington and Chester ; likewise for all Sweden and Finland, and for Stockholm separately, in which the sexes were distinguished These latter tables for Sweden and Finland, were the first which had been constructed from data that could be relied on, being enumerations made at seven different pe- riods, of the living, and registers of the annual deaths, in each interval of age, among the whole population for 21 years ending 1776, (Stockholm excepted, it being for 9 years only) and the materials for which had been communicated to him by M. Wargentin, one of the Commissioners of the Tabelvarket. In 1806 M. Duvillard published a work at Paris on the Influence of the Small Pox on Human Mortality, in which he gave a table of mortality for France, found- ed on observations made from extensive materials collected previous to the French Ilevolution. Mr Joshua Milne, in his Treatise on Annuities and Insu- rance, published in 1815, likewise gave two new Swedish Tables of mortality, exhibiting that of the sexes both separately and together, and deduced from the Swedish observations for the 25 years ending with 1795. He also furnished a table constructed from very accurate observations made at Carlisle upon a mean number of 8177 persons of various ages, ranks, and conditions, by Dr Heysham, who, for the 9 years from 1779 to 1787, carefully preserved the bills of mortality of that city, supplied their deficiencies, and kept correct accounts of two enumerations of the people, in which their ages were taken. And, last- ly, Mr Milne gave another table of mortality from the Swedish Observations for the 5 years ending in 1805, in his article on the Law of Human Mortality inserted in the volume of the Supplement to the Encyclopaedia Britannica pub- lished in 1824. Such were the principal tables of mortality up to this latter date ; but the one which had been for a long period almost uniformly relied on for practi- cal purposes in this country, was that denominated the Northampton Table, constructed by Dr Price from the mortuary registers of that town for 46 years ending with 1 780. A pretty general opinion, however, had for many years prevailed, that this table exhibited the rate of mortality much higher than what ♦ Supplement to Encyclopaedia Britannica, art. Bills of Mobtalitv. Benefit or Friendl?/ Societies. 73 actually occurred, but of this no perfectly satisfactory evidence had, till lately, been obtained. The three Swedish Tallies, although perhaps not applicable to this country, were always acknowledged to be formed from the most correct data, being founded upon observations neither confined to a short period of time nor to a small extent of territory. The two latter of these tables ex- hibit an increased duration of life in that country ; and all the three represent the rate of mortality there as ])eing much less than that shewn by the Nor- thampton Table. Although the Carlisle Table gives a still lower rate than the Swedish, yet, as the observations from which it had been deduced were more complete than any which had previously existed in Britain, this table was thought l)y many to exhibit more accurately than any otlier the duration of human life in this kingdom. The difference of mortality in the sexes, and also the disproportion of male and female births, were found by Dr Price, from very extensive investiga- tions, to be as follows : According to the registers of several large towns in Germany, it appeared that the still-born males and females were as three of the former to two of the latter ; and from a very extensive collection of facts derived from the registers of various places, both in this country and on the Continent, it was ascertained that there were also more males every where born alive than fe- males, — the total number of males born in those places, during certain periods, being 2,388,950, and that of females 2,271,201, or in the proportion of 20 to IJ) ; and throughout France, in the ratio of 18 to 17- But from equally satis, factory obsei*vations, it was likewise ascertained, that, from some peculiarity inimical to life in the male constitution, the males were reduced to a lesser number than the females before the expiration of the first year of age. In some situations also, more than a half, and in others more than a third or fourth, of both males and females were found to die before the fifth year of age. In large towns, the births were fewer, in proportion to the marriages, than in the country ; and the mortality was so great, especially among children, that had it not been for a continual influx from the country, the population of large towns would have rapidly decreased. The mortality of males continues to be greater at all ages, throughout the whole period of life, than that of females, — the difference being, in Dr Price's time, least in the whole kingdom of Sweden, greater at Chester, and greatest at Stockholm. The number of deaths or '* decrements among males, increase regularly through every period of life, from 10 to 75; but among females, this increase is interruj)ted for a few years after 45. This cannot be an accidental irregularity, the numbers being too great, and the period for which the observations have been made too long, to admit of such an irregularity. Probably, therefore, it must be accounted for in the folloAving manner. From the age of 30 to 35, the number of manied, ^d conse- quently of child-bearing women, is greater than at any other ages ; and this raises the decrements in that division of life. After 35, this number is dimi- nished, and the decrements fall. Between 40 and 45, the critical periods come on, and the decrements are raised again ; but after 45, the number of deaths arising from hence becoming less, the decrements become also less, but con- tinue afterwards to increase, with increasing years, till they become greatest at 74 or 75. It is, however, remarkable, that notwithstanding the peculiar dangers to which the lives of females are subjected, from the causes just men- tioned, there are no ages at which a smaller proporticm of them does not die than of males, except the ages in which the number of deliveries is greatest, and that even tJien the probabilities of living among them are nearly equal to those among males*." It may likewise be mentioned, that females are found to live, upon an average, from 3 to 4 years longer than males ; and married women longer than unmarried. But however accurately the rate of male and female mortality may be dedu- ced from observations made among the population at large, it must be evident that such a rate will not correspond with the experience of Life Assurance Socie- ties, whose members must be all in good health at the period of their admission. Accordingly, in almost every such society, the actual number of deaths among • Price on Reversionary Payments, vol. ii r« 408, 7th Edit. 1812. 74 Mr W. Frascr on the Histori/ and Comtitution of their members, for the first 10 years at least after entry, fall greatly short of that represented by the tables of mortality ; and, of course, this difference will be the greater, the more incorrectly any table in use may represent the average rate of mortality among mankind to be. Thus, in the Equitable As- surance Company of London, whose premiums are regulated by the Nor- thampton Table, it was ascertained by Mr Morgan, the eminent actuary of that association, upon a calculation for 30 years, ending with 1810, and upon 83,201 members, that the mortality which had occurred was only to the claims which might have been expected, from the age of 20 to 30 as 1 to 2; 30 to 40 as 3 to 6 ; 40 to 50 as 3 to 5 ; 50 to 60 as 6 to 7 ; 60 to 80 as 4 to 5, and in all ages together, in the ratio of 2 to 3. Any rates of contributions, therefore, calculated from the Northampton Table for sums payable at death, must be necessarily more than adequate to defray these benefits, and hence the principal source of the large surpluses or profits that are always realised upon those assurances. Indeed, according to the above experience, the premiums charged by the Equitable, and, till lately, by all the other offices, for sums payable at death, are 30 per cent, higher, and in many cases more, than are necessary to provide for the sums assured. In the case of annuities, however, calculated from the Northampton Table, the effect is generally the reverse ; for, as none will purchase these benefits but those who are in the best state of health, and of strong constitutions, it has usu- ally been found that they live, on an average, considerably beyond the time ex- pected. Comparatively few offices, therefore, have schemes for annuities, and such as do insure these benefits, generally purchase them from govern- ment, which is now ascertained to be losing considerably every year by such transactions. While, therefore, the premiums for annuities calculated by the Northamp- ton Table have been found greatly insufficient, the premiums for sums pay- able at death have been as much in excess ; and as the great mass of assurances consists of this latter benefit, such excess had become an oppressive and un- just tax on the higher classes of the public. But inaccurate mortality tables must, if possible, prove still more hurtful to Friendly Societies, than even to the higher classes of mutual assurance associa- tions ; for, on the one hand, the members of those societies are ill able to pay more than is necessarily required, while, on the other, an inadequate contribu- tion would prove ruinous in the extreme. Hence an accurate table of morta- lity is of the utmost importance in the computation of their rates of contribu- tions and allowances ; and it therefore became a serious question, first with the Committee of the Highland Society of Scotland, and next with those of the House of Commons, what table of mortality ought to be adopted. The Highland Society confined their inquiry among Friendly Societies to age and ^ckness only ; but this they afterwards regretted, as it was found that the mortality of their members might have been also pretty accurately ob- tained. As already mentioned, the committee had therefore to consider what tables of mortality could best be relied on, and applied for the opinion of seve- ral eminent calculators on the subject. Among many communications which were in consequence received, the following are extracts from one made by Dr Hamilton of Aberdeen. " The choice of proper tables for ascertaining the rate of mortality, is a point of the greatest importance. I have not seen Mr Milne's Treatise on Annui- ties, containing the Carlisle Tables, but observe that they give the probabili- ties of life higher than any tables I am acquainted with. The Swedish Tables, given by Dr Price, are also high, and give an intermediate result between the Northampton and Carlisle Tables. I think the calculations should not pro- ceed upon one set of tables only, but upon the medium of several esteemed the best. Perhaps the three above mentioned (Northampton, Swedish, and Carlisle), are as good as any we are at present in possession of. I consider it, however, as a desideratum to obtain tables founded upon more recent observa- tions than those which we at present use, which, with the exception of the Carlisle one, are founded upon bills of mortality kept long ago." — " Now, it is generally believed that there has been a sensible increase in the duration of Uuman life in this and other civilized countries, within the last half century, Benefit or Friendly Societies, 75 which may be accounted lor from more cleanly habits, the l>etter treatment of diseases among the poor, the practice of vaccination, &c. The belief of this is so prevalent, that some of the insurance oflices have altered their terms ; and the Carlisle tables seem to confirm the opinion. The effect of an increase of longevity is to increase the value of an annuity for life ; to lower the tenns upon which insurance for life may be effected ; to ameliorate the terms for an- nuities to widows ; but it increases the demands upon Friendly Societies for the relief of sickness and old age." — " Although the possession of more tables, founded upon recent observations, is to be desired, we must, in any present scheme, make the best of those we have •.'* Accordingly, upon considering various tables of mortality, and after the most mature deliberation, it was resolved to found the computations upon a medium derived from the Northampton, Carlisle, and latest Swedisli tables ; and, from such data, Mr John Lyon, now one of the masters of the High School, Licith, and an able calculator, constructed a new table of mortality. In the formation of this table, Mr Lyon reduced the three tables, of which it is an average, to the same radix^ or number, at the completion of 20 years of age (it being only after that age that such tables are chiefly useful, at least for Friendly Societies); added the corresponding numbers together, and assumed 1005 as the radix for a new table, using the nearest whole numbers to avoid fractions. Before, however, giving this table, it may not be superfluous to contrast those tables from which it has been deduced, in decades, or periods of ten years, by which means some idea will be formed of the propriety of the rate of mortality adopted. According to those three tables, then, the propor- tion of the deaths to the living, at different ages, is as follows ; AOES. Northampton. Carlislk. Latkst Swedish. Between 20 and 30 1 to 63.7 1 to 132.60 1 to 134.86 30 — 40 1 — 53.5 1 — 94.44 1 — 102.96 40 — 50 1 — 41.7 1 — 69.72 1— 70.07 50 — 60 1 — 29.9 1 — 54.74 1— 39.81 60 — 70 1 - 20.3 1— 24.24 1 — 20.43 70 — 80 1 — 11.0 1— 12.04 1 — 8 95 80 — 90 1— 6.0 1 — 5.69 1 — 4.30 Above 90 1— 2.4 1 — 3.50 1 — 2.38 Thus it appears that the Northampton Table represents the rate of morta- lity, in the earlier ages, to be double that represented by the Carlisle ; 1 out of 63 persons, of any age between 20 and 30, dying annually according to the former table, while there is only 1 out of 132 according to the latter. The following is the average of the three, and also the average of the number of the living to those who died at the same ages in the city of Glasgow, as cor- rectly ascertained by Mr Cleland, during the year 1822, the one succeeding that in which the last census was taken, and in which the number of deaths differed only by four from that of the preceding year. The table of the High- land Society represents the average rate of males and females combined. Ages. Highland Society AVBRAOB. GLASGOW. 1 Males. Females. \ Both. | Between 20 and 30 1 to 95.50 1 to 81.5 1 to 137.5 1 to 107.5 30 — 40 1 — 76.67 1 — 73.5 1— 81.1 1— 77.5 40 — 50 1 — 58.14 1 _ 58.7 1- 74.2 1 — 66.0 50 — 60 1 — 40.28 1 — 41.5 I— 47.5 1 — 44.6 60 — 70 1 — 21.90 1 — 20.7 1 — 23.6 1 — 22.3 70 — 80 1 _ 10.48 1— 8.1 1— 9.6 1 — a9 80 — 90 1 - 5.17 1 — , 5.9 1 — 6.6 1— 6.3 Above 90 1 — 2.50 1 — 1.6 1— 2.9 1 — 2.4 • Highland Society's Rqx)tt ou Baicfit or Fricmlly Societies, p. M. Edin. 1884. 76 Mr W. Fraser on the Historij ayid Constitution of Here the difference between male and female mortality is very strikingly shewn by the Glasgow Table, — a fact which, although well known to those ac- customed to such investigations, has been hitherto seldom contemplated by the great majority of the public. But, as the average of these two tables for males and females combined, come so near to each other, in ])eriods of ten years, be- ing, according to the Highland Society's average for all ages between 20 and 60, one in 7G.77 annually, and, according to the Glasgow observations, one in 83.66, it may be presumed that the following Table will represent pretty ac- curately the mortality of the working classes of this country, at all ages from that of 20 to the vitmost period of life. The average number alive, through- out the year, is a mean between those alive at the beginning, and those alive at the end of each year. MORTALITY TABLE, exhibiting the Law of Mortality after 20 years of Age, or the Number of Persons alive at the beginning of each year, till all are dead, out of 1005, all commencing the 21st year of their age at the same time ; — ^being an average of the Northampton, Carlisle, and latest Swedish Tables of Mortality *. o c o ^ (U c i-s O c, 5 . 11 So • ^•^ A s > o . Age. ill 1:1 Age. ill ifi Age. 21 |8S 1-^ lis lii 3. a 727 71 s 5 rt 3.2 lu 1005 10 1000 46 733 13 324 23 313 22 995 10 990 47 720 13 714 72 301 23 290 23 985 10 980 48 707 13 701 73 278 22 267 24 975 10 970 49 694 13 688 74 256 22 245 25 965 10 960 50 681 13 675 75 234 21 224 26 955 10 950 51 668 14 661 76 213 21 203 27 945 10 940 52 654 14 647 77 192 20 182 28 935 10 930 53 640 14 633 78 172 19 163 29 925 10 920 54 626 14 619 79 153 18 1'14 30 915 10 910 55 612 15 605 80 135 17 127 31 905 10 900 56 597 15 590 81 118 16 110 32 895 11 890 57 582 15 575 82 102 15 95 33 884 11 879 58 567 15 560 83 87 14 80 34 873 11 868 59 552 16 544 84 73 13 67 35 862 11 857 60 536 16 528 85 60 11 55 36 851 11 846 61 520 16 512 86 49 10 44 37 840 11 835 62 504 17 496 87 39 9 35 38 829 11 824 63 487 17 479 88 30 7 27 39 818 12 812 64 470 18 461 89 23 6 20 40 806 12 800 65 452 19 443 90 17 5 15 41 794 12 788 6G 433 20 423 91 12 4 10 42 782 12 776 67 413 21 403 92 8 3 7 43 770 12 764 68 392 22 381 93 5 2 4 44 758 12 752 69 370 23 359 94 3 2 2 45 746 13 740 70 347 23 336 95 1 1 1 Such, then, was the rate of mortality adopted by the Highland Society of Scotland in calculating the necessary contributions for allowances in Sickness, Deferred Annuities, and sums payable at Death, to the Members of Friendly Societies ; and it will next be seen from the evidence taken before the two Select Committees of the House of Commons, how far the above Table may be considered as suitable for these purposes. • Hjgliland Society's Report, p. 146. Benefit or Friendlij Societies. 77 Report of Parliamentary Committee in 1825. The causes which led to the appointment of this Committee, and the result of their in(j[uiries into the rate of sickness, have been already detailed. As to the law of mortality, comparatively little information was obtained, except that atfbrded by Mr John Finlaison, actuary to the National Debt Office, from the experience of the Government annuitants. The following extracts contain all that is important hi the JMinutes of Evidence on this subject. 1825, March 8 — The Rev. J. T. Becher of Southwell in Nottinghamshire, gave it as his opinion, that no greater approach to accuracy in the rate of morta- lity can or need be made, than what is made by the Northampton Tables.— Report, J). 29. John Finlaison, Esq. Actuary to the National Debt Office, stated. That, six years ago he had been appointed by Government to investigate the true law of mortality which prevails in England, among persons of either sex, at the present time, — at the present time, he says, because he had discovered a very extraordinary prolongation of life in the course of the last hundred years. He had thus been enabled to make observations upon nearly 25,000 life-an- nuitants of both sexes, consisting of the nominees in the three Tontines com- menced in Ireland between 1773 and 1779 ; the nominees of the great Ton- tine commenced in the year 1789, in England ; and the nominees of Life Annuities granted at the National Debt ()ffice since the year 1 808. — Yrovn. which observations it appeared that the duration of existence now, compared with what it was a century ago, is as four to three in round numbers ; but that the difference in the duration of male and female life is much the same as it had been stated by former authors. (See p. 73. of this Journal) These Life Annuitants, of course, chiefly consisted of the upper classes ; but Mr Finlaison had also been enabled, by the orders of Government, to observe the law of mortality prevailing among 7^,000 out-pensioners during the seven years between 1814 and 1822, when a very great difference was found, as might have been expected, between the mortality of these two classes, the latter being all men who had been discharged either on account of long service, wounds, or impaired constitutions. Mr Finlaison also found, that the Car- lisle table came nearest to that which he had deduced from the observations of the 25,000 people, had he combined both males and females together, as had been done by the framer of the Carlisle table ; but was of option that the data for this latter table was rather insufficient : " In reference to the Northampton tables, which are the basis of most of the calculations issued in this country, it is well known that that table underrates human life to a very great degree. I hold in my hand a calculation of the effects of the Nor- thampton table, as applied to the nominees who have purchased annuities from the Sinkmg Fund within the last sixteen years ; and the statement also shews the application of my own tables to the same events, both of them as com- pared with the fact, — the result is, that 481 of those nominees would, accord- ing to the Northampton table, have deceased beyond what the fact has been, out of 5,940 ; and that, by my own table, the excess that should have died beyond the fact is only 21 ; and we rather think that difference will vanish when we come to know the whole of the facts of the case, because several people have not claimed their annuities, who may possibly be dead." The witness, in the course of his examination, delivered to the Committee several tables in confirmation of his statements. — Pages 44, 45, 46. March 15.— AVilliam Morgan, Esq., Actuary to the London Equitable So- ciety, conceives that there is a very great difference between the mortality of the children of the lower and of the higher orders, more deaths taking place among the former than among the latter class ; and that he is sure not half the children born in London live to be four years of age. — Page 52. April 28 William Frend, Esq. Actuary to the Rock Life Assurance lusti- tution, thinks the Northampton table would come nearer to the average of 78 Mr W. Fraser 07i the History and Constitution of life among the members of Friendly Societies than they would do among the higher classes ; but does not think that there is any dilterence in the duration of human life since the time when the Northampton table was framed Page 87. Dr Augustus Boxssie Granville, professionally connected with two extensive lying-in institutions, and with the Infirmary for Sick Children, gave some valuable and interesting information as to the earliest ages at which women marry, — the period they are most prolific, and when they cease to bear child- ren,i — the average number of still-born and living children to each marriage, —the periods ot infant life when the greatest mortality prevails, &c. " The numbers of married women, to whom my observation has extended, as far as the statements in the books before the Committee bear me out, are 7,060 at the Westminster General Dispensary in seven years and a quarter ; 2,755 in three years at the Benevolent Institution ; and, in reference to the children at both these institutions 9,000 ; while at the Royal Infirmary for Sick Child- ren, 5,040 is the number as stated before ; giving a general total of observa- tions, amounting to 24,450." We must delay till a future opportunity a full detail of the results of Dr Granville's investigations ; but he states that, in 1818, " I made a calculation referable to about 400 women, whom I had closely questioned respecting miscarriages they might have had ; the re- sults which that examination gave me was, that, among the class of the poor, 1 woman in 3 who is pregnant invariably miscarries. After a lapse of seven years, I picked out, without reference to age, or any thing else, 840 other women, attendant on another medical charity under my care, different from that which had supplied the number obtained seven years before ; and, on calculating from their answers to the same question respecting miscarriage, the results of those answers, I found that, in both institutions, though the poor are resident in different parts of the town, but of the same class in life, precisely the same proportion resulted from the calculation, viz. that 1 in 3 miscarried, passing over the number of women who might have been exa- mined during the intermediate period of seven years on the vsame subject." — Pages 84, 85. May 4 — Mr John Finlaison having on a former day received the books of Dr Granville, with a view to calculating results that might be useful for the purposes of the Committee, he now gave in a paper containing these results, as calculated from a careful analysis of those registers. Whence " it appears that the mortality among infant life, in the class of poor people, is very great, so much so, that out of every 1000 births, only 542 infants survive the period of nursing, or, in other words, are alive at the time of the mother's next lying- in. It appears further, that, for whatever period child-bearing goes on among the lower classes in London, up to the twentieth year of parturition inclusive, the number of births are invariably constant at the rate of two in four years ; while the number of children reared and alive at the period of the mother's next lying-in, is also invariably constant at the ratio of one in every four years." — " It does not appear that any material observation re- sults from the age at which marriage is contracted on the side of the female, with this exception, that, when marriage is formed very young, the births are not so quick as when marriage is formed at maturer years. For example, while 400 females, married under 17, would, in each year, from the period of parturition, have 182 births; 400 females, married between 28 and 33, would have 23C births, because these last happened in the earlier years of marriage ; but the projwrtion of children which the one and the other class would be able to rear, would be just the same." — It is added, that these observations apply exclusively to the lower orders in London, from which class the regis- ters were framed — Page 90. Such was the principal information obtained by the Committee of 1 825, re- lative to the births and mortality of this country ; but it is proper to remark, that these subjects did not form a primary object of this inquiry — endowments for children, the average rate of sickness, and the more minute details of the ra^iagement of Friendly Societies, being the points, which the Committee Benefit or Friendly Societies. 79 had principally In view. They stated, however, in their Ueport, that " it is certain that the oxperiencc ot* the offices for insurance on lives has profed the Northampton Tables to be much more unfavourable to human life than the purposes of those offices require ;" and recommended to the House to resume their inquiry in another session, that such information might be ob- tained, under parliamentary authority, as should place the question almost beyond controversy. Report of Parliamentary Committee in 1827. The attention of this Committee was chiefly directed to the Superannua- tion Allowances of Friendly Societies, and consequently to the average dura- tion of life, on which all computations for such allowances must necessarily depend. It was therefore indispensably requisite, that the history and ac- curacy of the Northampton Tables should be more particularly considered than they had been by the former Committee ; and that this has according- ly been done, will appear from the following brief summary of the Minutes of Evidence. April 3. 1827. — The Reverend J. T. Becher gives a detail of his investiga- tions into various tables of mortality, and of the different mortuary registers from which Dr Price had deduced the observations on which he constructed the Northampton Tables. From such a concurrence of testimony as " was brought under the consideration of Dr Price, when he originally formed the Nortnampton Tables, I venture to presume that they were then render- ed as correct as calculations founded upon the doctrine of such chances could avail ; and consequently that they still remain sufficient for every prac- tical purpose, unless some variation can be shewn in the ordinary standard of mortality." — " In a note published by Mr Morgan upon Dr Price's Obser- vations on Reversionary Payments, he states the mortality prevailing among the members of the Equitable, or the proportions subsisting between the claims that had been actually made, and the claims that should have been made, according to the Northampton calculations : which statement of Mr Morgan has, as I conceive, given rise to considerable misapprehension and error. Subsequent calculations have been made by Mr Babbage, an eminent mathematician, and by Mr Griffith Davies, an intelligent actuary of the Guardian Office. Both of them have formed tables upon what they' denomi- nate the experience of the Equitable, meaning the experience of Mr INIorgan, as communicated to the public in the few lines which they cite as their ba- sis. Now, in the year 1777, it will be found in the Journals of the House of Commons, that when Mr Morgan gave evidence before the Usury Com- mittee, he stated the claims made upon the Equitable to be to those which should have been made, in the following proportion," Table I. " And in the year 1810, Mr Morgan made a calculation for 30 years, upon 83,201 mem- bers of the Equitable, from which he deduced, that the mortality which had occurred was to the claims which might have been made," as in Table II. Table I. Table II. Froni 20 to 30 as 7 to 17 From 20 to 30 as 1 to 2 30 to 40 as 3 to 5 30 to 40 as 3 to 5 40 to 50 as 1 to 2 30 to 50 as 3 to 5 50 to GO as 7 to 5 50 to 60 as 5 to 7 ^s^m}*^" '»:"'-*- ="-'x. CO to 80 as 4 to 6 And hi all ages together, in the ra- tio of 2 to 3. 80 Mr W. Fraser oji the History and Constitution of " Here we find subsisting between the sums a singular eoiTespondenee. From 30 to 40, and 40 to 50, the j)rc)portions are precisely the same, and at all other ages nearly so ; and the general ratio in both instances is as 2 to 3 ; but so far is life from having been improved, that in all cases except where the proportions are the same, they appear to be less in favour of life than they ■were in the year 1777 *• Besides which, in a conversation with Mr Morgan, I find that a little inadvertency has occurred in calculating these proportions, so as to render them less in favour of life than what they seem to be. This, I have no doubt, Mr Morgan will explain, though I do not feel authorised to enter upon it. But to ascertain the accuracy of his conclusion upon the numbers taken in 1810, he made a further calculation upon 151,754 persons, members of the Equitable for 20 years, ending in the year 1821, and specify- ing the diseases by which the deaths were respectively occasioned ; and his conclusion most decidedly is — as given to me in correspondence, and printed in my Observations upon your Report, p. 99, which I solicit permission to lay upon the table, as well from his opinions delivered in his charge to the Equi- table in 1825, and personally repeated to me on Saturday last, — that life among the members of the Equitable has rather diminished than increased in value ; which opinion I find also confirmed by other actuaries." " With re- spect to the mortality of females, he (Mr Morgan) is fully convinced that no such difference exists as to authorise any variation of tables. If such a dif- ference had existed, he must have discovered it, because the Equitable insures both sexes very largely, and more especially upon survivorships, principally between husband and wife, consequently the excess must have appeared in the superior number of females, and this the more distinctly, as the survivor possesses the option of receiving either a gross sum, or of becoming an annui- tant." Mr Becher then gives a very long and minute detail of the rates of various life assurance associations and Friendly Societies ; also, a further ac- count of the data possessed by Dr Price for the construction of his tables ; but our limits preclude us quoting any more of his evidence, which occupies near- ly eight pages folio, all chiefly in defence of the Northampton Tables. — Re- port^ pp. 15-22. Joshica Milne, Esq. actuary, states, that there now exist three tables, which, he conceives, show, with sufficient accuracy, the rate of general mortality, or the proportion of the people, including all ages, which die annually. Speak- ing with reference to this country, these thiee tables are " the Carlisle and two others constructed from the experience of the Equitable Society, of the mortality that has been observed to take place among its members for a period of upwards of 30 years. One of these tables was constructed by Mr Babbage, a gentleman well known and justly appreciated in the scientific world ; the other by Mr Griffith Davies, actuary to the Guardian Insurance Company ; they were both published in the beginning of the last year. I had, previous- ly, in the Supplement to the Encyclopaedia Britannica, given a comparison of the mortality prevailing in the several intervals of age, from 10 years to the age of 80, according to the Carlisle and Northampton Tables, and the expe- rience of the Equitable Society ; by which that experience and the Carlisle table appear to agree remarkably well. The two gentlemen just named, have since shown it at each separate age ; and I have here tables of the values of annuities calculated from these three tables of mortality, compared with the results of the Northampton table, derived in a similar way. I beg leave to states as to the nature and uses of a table of mortality, the object being to show how many persons at any one age will arrive at any greater age ; the simplest way of considering it, is to suppose them all born at once. I can illustrate this subject by comparing it with the table of mortality for Sweden, •If we rightly understand the note by Mr Morgan, at p. 132, 103 of vol. i. of Dr Price's \ had been calculated by the table of mortality constructed by Messrs Simpson and Dods from the London Observations, while the number of deaths expected to happen during the 30 years ending with 1800, had been calculated by the Northamp- ton table. Now, as the London table represents a much higher rate of mortality than the one for Northampton, and as the deaths among the members of the Equitable previous to 1777 bore the same Eroportion to the former table as the deaths occurrinc for the 30 years ending with 1810 did to the itter tablet it aecessaxily follows that the duration of life must have increased since the year 1777> Bejiefit or Friendly Societies. 81 which was published in my work on Annuities in the year 1815. Of 10,210 nijile children born in Sweden, just C090 arrived at 15 years of age, 3026 at GO, and so on. In a male pojjulation, where the law of mortality was the same, and the number of the annual births, as well as that of the annual deaths, wa» constantly 10,210, the whole number of the jjeople would be 364,733. This It where there is no migration, and, consequently, the number of persons is re- duced by the law of mortality onlv : but if you suppose the population to in- crease, which has been the case for the last century and more, in almost all the countries of Europe ; then of course there will be a great many in the early parts of life for whom there are no corresponding survivors in the later {)eriods. If, for instance, the population has doubled in Kngland within the ast 45 years, then the number now existing at 15 years of age will be twice as great as it was 45 years ago ; but the number at CO will be only the survi- vors of those who were 15 years of age 45 years since, and consequently only half as many as the survivors 45 years hence will be, out of the persons now 15 years of age ; and therefore, such a table is of no kind of use for determin- ing the probabilities of life, and if applied to that purpose will only mislead : for instance, out of this number C098, 45 years ago, at 15, if the })opulation had doubled, the same table would represent only 302G to have attained CO, whereas the 12,1 DC, now 15, will leave twice as many survivors at CO, that is C052 ; therefore, if you wish to provide annuities for them, and calculate ac- cording to that table of an increasing population, you will only provide half the annuities wanted. The principle applies in all cases, and hence it is ma- nifest, that these tables (the Northampton) are quite unfit to determine the probabilities of life by." Mr Milne having been requested to state which ta- ble he would prefer for the calculations of Friendly Societies, declined giving any direct oj)inion. " Having myself constructed the Carlisle table, and cal- culated tables of the values of annuities from it, I would rather that the Com- niittee should decide on that question than take my opinion ; and I consider it would not be difficult to aftbrd honourable gentlemen the means of judging with facility of the preference." — Pages 25, 2C. April d.-^Francis Baily^ Esq, actuary, thinks that the safest tables for cal- culating annuities for the working classes would be the Swedish. According to him, out of 1000 born, there would be alive at the age of 65, " in Nor- thampton 140, in Sweden 235, and in Carlisle 302 ; those have been formed from particular towns, Sweden has been made from the country at large. Friendly Societies are partly made up of persons from the country, a great portion may be in town, and a great number in the country farms." He can- not account for the extraordinary difference between the longevity of the peo- ple of Northampton and Carlisle : — hardly thinks it worth while to perplex the subject with a different rate of payment for males and for females, to en- sure the same object : — has an opinion, but can hardly tell upon what it is founded — whether from the small-pox being removed, or from habits of clean- liness being more common among the lower classes — that the duration of life has increased within the last 40 years Page 27. May 4 — Charles Babbage and Benjamin Gompertz^ Esquires, actuaries.^ For calculating the necessary payments by the working classes in youth and manhood for annuities in old age, Mr Babbage would prefer, of the tables he is acquainted with, the Swedish tables in Dr Price's work, or the French tables of M. Duvillard. By these tables fewer persons die from the age of 5 to 17, but after that age more than by the Swedish tables. , -Mr Gompertz thinks the table constructed by Mr Finlaison for the Committee in 1825, agrees nearly with the Carlisle tables, and therefore, that it would be a good table to calcu- late endowments for children from, in consequence of its making death among the younger branches of mankind less than some of the other tables, and there- fore, that a greater endowment might be expected than was calculated on ; but does not think it would be by any means safe to rely on the Northamp- ton tables for those purposes, "'it appears to me, that a great part of the profit of the Equitable Assurance Company has arisen from insuring lives, in consequence of the Northampton table being more favourable to death than it OCTOBER DECEMBER 1827. F 82 Mr W. Fraser on the History and Constitution of should be ; and if that should be the cause of profit, of course a reverse wilt take place in annuities." " The society use the Northampton table, but the real experience of the Equitable appears to agree with the Carlisle tables to- lerably well to a great extent ; and the same observations have been made by other gentlemen— I believe Mr Babbage, Mr Davies, and Mr Milne, as well as myself." — Mr Babbage again remarks, that " this will aflPord an opportunity of explaining something which might perhaps otherwise be misunderstood. If I am asked which tables I should wish to use in making any calculations re- lative to the poorer orders of society, I should state that my object would be to get such tables as exactly and perfectly represented those classes through- out all their ages ; but it may be said that this is unsafe, and that others should be taken where the deaths are more numerous than those which really happen. My view in all cases is, let us get as nearly as we can the law of mortality of the class for which we want to calculate, and add to the prices computed from it some proportional part sufficient to insure the safety of the establishment which uses them. I strongly object to using tables giving a greater mortality than is expected to take place, a course which has sometimes been defended on the ground of safety to the establishment. Safety is much more certainly secured by judging as nearly as possible the true risk, and add- ing an additional sum for security. If tables not representing the mortality of the class for whom they are designed are employed, every step in the rea- sonings which are deduced from them is liable to increased error ; and if the calculations are at all complicated, the errors so introduced may not impro- bably act on the opposite side to that which they were introduced to favour." — " I will mention a little work, which is probably known to some of the mem- bers of the Committee ; its title is " Annuaire ;"'it is published by the French Board of Longitude, and contains an account of the progress of population in France and in Paris ; an account of the marriages and of births, male and female. There are some singular facts very recently established, by a large enumeration. It is published every year at the price of one franc, and contains a great deal of very useful information. It has usually been supposed, that the proportion of males born to that of females, was 21 to 20 ; that is to say, the quantity of males above females was one-twentieth. In France it has been observed, that out of 0,705,778 persons born, legitimate and illegitimate, there are 3,458,905 males and 3,240,813 females, or nearly 10 males to every 15 females. Out of 400,391 illegitimate children there are 235,951 males and 224,440 fe- males. These numbers differ considerably from the ratio of 10 to 15 found among legitimate children. That ratio would give 221,204 females for 235,951 males, whereas 3,230 more females are really produced. From these data it follows, that, in France,for every 100,000 legitimate female children, there will be 100,534 legitimate males ; but that for every 100,000 illegitimate fe- male children, there will be born only 105,128 illegitimate males, so that the probability of a child's about to be born being a female is greater if it is ille- gitimate than if it is legitimate." In conclusion, Mr Babbage states, that he should " certainly think it would be very desirable to calculate for the poorer classes on other tables than those used for the higher classes." — Pages 28-33. John Naylor, Esq. actuary of the Economic Life Assurance Society, has no hesitation in saying, that a society founded for the purpose 'of granting an- nuities, which adopted the Northampton table, and a mean rate of inte- rest, would be ruined, from that table representing the rate of mortality by far too high. He consic^^rs Mr Finlaison's table (p. 80.) to be accurate from its near agreement with the Carlisle tables, and recommends these for the purpose of calculating annuities. He is farther decidedly of opinion, that the average duration of life has increased within the last forty years ; and in far- ther exphmation of all these points, he afterwards gave in a detailed written statement to the Committee, containing much valuable information. We can only, however, give the following extracts : — " The Northampton table is less to be depended on than any of those above mentioned, because it is not de- rived from proper data ; no enumeration of the population, classed according to the ages, having been, in this instance, obtained. It is well known, that a table of mortality, deduced from mortuary registers only, cannot be correct, unless the population had been stationary, and the births and deaths equal, , Benefit or Friendly Societies. 83 not only during the time the registers were kept, hut also during the previous century. The celebrated Dr Price supposes a table of mortality may l>e ac- curately constructed from bills of mortality, where the deaths exceed the births, if the numbers and ages of the annual settlers can be determined ; and in constructing the Northampton table, he computes the number of settlers from the excess of deaths, and their ages from the bills of mortality. But the number so computed would be correct only, if the j)opulation of Northamp- ton had remained stationary during a century and a half; and the ages could not be ascertained by the bills, unless the law of mortality (the very object of the investigation) were previously known. Little dei)endence can be placed on a table thus constructed. Indeed, it must be obvious, that a table of mor* tality, t. e. a table exhibiting the proportions of deaths to the numbers living at all ages, can be accurately constructed only, by means of enumerations of the living and registers of deaths, each classed according to the ages." " It is much to be lamented, in a country like England, where calculations on life contingencies are so constantly required, that no efficient means have been adopted for computing an accurate table of mortality. If fre^iuent enumera- tions of the living at all ages, and registers of deaths at all ages, throughout the kingdom, were obtained, not only the law of mortality for England in ge- neral, but the variations of that law for different places, and for the same places, at different times, and the law for each sex, might be accurately deter- mined." Pages 34-84 and 85. May 11 Griffith Davies^ Esq. Actuary to the Guardian Assurance Company, states his opinion to be, that the Northampton table gives the average dura- tion of life rather lower, and the Carlisle and Finlaison's tables somewhat higher, than that which obtains among the aggregate mass of mankmd in Eng- land and Wales; and therefore that neither are well adapted for calculating payments for annuities to the members of Friendly Societies. Neither does he think the experience of the Equitable would give an accurate result for the persons insuring in Friendly Societies, as the Equitable insurers are, general- ly speaking, in a higher rank of life, and are more select lives than those of Friendly Societies. " On that account, unless the incidental expences neces- sarily attendant upon the management of societies were taken into account, the experience of the Equitable would be full high ; but taking into account the uncertainty as to the rate of interest, and also the incidental expences, I think it would be more safe to use the Carlisle table, Mr Finlaison's table, or the experience of the Equitable, to determine the contributions for deferred annuities." He conceives that, throughout all ages, the duration of life is higher now than it was a hundred years ago, and that it has been gradually increasing during that period, but morejwticularly since the beginning of the present century. " All observations tend to confirm that female life, I believe at all ages, is better than male, and even married better than single ;" and " as another corroborative of the increased value of life within the last 100 years, I think on examination of different tables, the fniitfulness of women, say from the age of 15 to 50, will be found nearly the same at all periods; and in the greater part, I believe of the different countries of Europe that we have tables for, prior to the time Dr Price wrote, that degree of fruitfulncss was scarcely adequate to compensate for the existing mortality; so that he strenuously ar- gued that the population was decreasing in this country; and I believe that, supposing the documents he had to reason upon to be correct, the conclusion he drew was not so erroneous as it has been represented. It is not an increase in the number of births, as compared with the number of bearing women, that has increased the population, but the increased number of children that have been reared from the birth, and passed through the different stages of life." Pages 3G-38. Dr A. B. Granville not being aware that he should be again examined before the Committee, had not 'prepared the additional information which he might have done, in addition to what he had laid before the Committee in 1825. He stated, however, that he had been for some time preparing a sc- ries of tables, and a paper for the lloyal Society, which would bear \\\yon the question before the Committee. He also stated, that he had obscrve), .34,8JJ5 is the sum of the second column, at and after 25 years of age, and m5 the number living at that age; therefore, 34,895 being divided by 965, tlie quotient will be 36.16, and the half of 1, or .50, being subtracted ffom this latter number, it will leave 35.66, which is the expectation of life, according to the Highland Society's Table of Mor- tality, of a person aged 25. The Probability of Life, or the chance of a person living from one a^e to another, is found by dividing the number living at the latter age by the number living at the former age, according to any table of mortality which may be adopted. Hence the Value of an Aimuity, commencing at any given age, or a Sum payable at Death, obviously depends upon the number of years which, accorduig to such expectation and pro- bability, a person of any age has to live. Government Annuitants, Age. Northamp- ton. Carlisle. Highland Society. Equitable Society. according to Mr Finlaison. Male. Female. Mean. 20 33.43 41.46 41.06 38.39 43.99 41.19 21 32.90 40.75 38.16 40.33 37.83 43.36 40-60 22 32.39 40.04 37.54 39.60 37.34 42.73 40.04 23 31.88 39.31 36.91 38.88 36.87 42.09 39.48 21 31.36 38.59 36.29 38.16 36.39 41.45 38.92 25 30.85 37.86 35.66 37.44 35.90 40.81 38.36 26 30.33 37.14 35.02 36.73 35.41 40.17 37.79 27 29.82 36.41 34.39 36.02 34.86 39.52 37.19 28 29.30 35.69 33.75 35.33 34.31 38.87 36.59 29 28.79 35.00 33.11 34.65 33.75 38.22 35.99 30 28.27 34.34 32.47 33.98 33.17 37.57 35.37 31 27.76 33.68 31.93 33.30 32.59 36.91 34.75 32 27.24 33.03 31.17 32.64 32.00 36.26 34.13 33 26.72 32.30 30.56 31.98 31.40 35.61 33.51 34 26.20 31.68 29.82 31.32 30.79 34.96 32.88 35 25.68 31.00 29.31 30.66 30.17 34.31 32.24 36 25.16 30.32 28.68 30.01 29.54 33.68 31.61 37 24.64 29.64 23.05 29.35 28.91 33.04 30.98 38 24.12 28.96 27.42 28.70 28.28 32.40 30.24 39 23.60 28.28 26.78 28.05 27-65 31.76 29.71 40 23.08 27.61 26.17 27.40 27.02 31.12 29.07 41 22.56 26.97 25.56 26.74 26.39 30.46 28.43 42 22.04 26.34 24.94 26.07 25.74 29.81 27.78 43 21.54 25.71 24.32 2.5.40 25.08 29.14 27.11 44 21.03 25.09 23.70 24.75 24.42 28.48 26.45 45 20.52 24.46 23.08 24.10 23.75 27,81 25.78 46 20.02 23.82 22.48 23.44 23.07 27.13 25.10 47 19.51 23.17 21.87 22.78 22.38 26.44 24.41 48 19.00 22.50 21.27 22.12 21.68 25.75 23.72 49 18.49 21.81 20.65 21.47 20.08 25.06 23.02 50 17.09 21.11 20.04 20.83 20.30 24.35 22.33 Benefit or Frkndlij Societies, TABLE — continued. 87 {JovcTnmcnt .A mm iuiits. 1 A(jc. Northamp- Carlisle. Hi^^hLind Society. E(iuitable Society. according, to Mr Kl.NL.\IhMiN. 1 ton* 1 Male. Female. Mtaii. 1 51 17-50 20.39 19.42 20.20 19.02 23.65 21.64 52 17.02 19.08 18.82 19.59 18.97 22.93 20.95 53 IG.54 18.97 18.22 19.00 18.3i 22.22 20.28 51 1G.0C 18.28 17.02 18.43 17.73 21.50 19.62 55 15.58 17.58 17.01 17.85 17.15^ 2079 18.97 5fJ 15.10 10.J!9 10.43 17.28 10.57 20.08 18.33 57 14.03 10.21 15.81 10.71 10.02 19.38 17.70 6H 14.15 15.55 15.25 10.15 15.47 18.09 I7.O8 59 13.0« 14.92 14.05 15.00 14.93 18.00 16.47 GO 13.21 14.34 14.07 15.06 14.39 17.32 15.86 (jl 12.75 13.82 13.49 14.51 13.84 10.04 15.24 02 12.2H 13.31 12.99 13.90 13.28 15.90 14.02 03 11.81 12.81 12.33 13.42 12.72 15.30 14.01 01 11.35 12.30 11.70 12 88 12.17 14.04 13.41 (>5 10.88 11.79 11.21 12.35 11.03 14.00 12.82 (>G 10.42 11.27 10.08 11.83 11.10 13.37 12.24 «7 9.90 10.75 10.17 1 1.32 10.01 12.76 11.09 G8 9.50 10.23 9.09 10.82 10.14 12.16 11.15 CI) 9.05 9.70 9.24 10.32 9.07 11.57 10.02 70 8.60 9.18 8.81 9.84 9.22 10.99 10.11 71 8.17 8.05 8.40 9.36 8.79 10.44 9.02 72 7.74 8.10 8.01 8.88 8.37 9.92 9.15 73 7.33 7.72 7.63 8.42 7.90 9.41 8.09 74 0.92 7.33 7.24 7.97 7.54 8.92 8.23 75 0.54 7.01 0.87 7.52 7.12 8.46 7.79 70 0.18- 0.09 0.50 7.O8 6.69 8.00 7.35 77 5.83 0.40 0.10 6.64 6.23 7.58 0.91 78 5.48 0.12 5.82 6.20 5.78 7.19 0.49 79 5.11 5.80 5.48 5.78 5.35 6.83 6.09 «0 4.75 5.51 5.14 5.38 4.94 6.50 5.72 «1 4.41 5.21 4.81 5.00 4.55 6.20 5.38 82 4-.09 4.93 4.49 4.63 4.18 5.89 5.04 83 3.80 4.05 4.18 4.30 3.82 5.57 4.70 84 3.58 4.39 3.77 4.00 3.46 5.22 4.34 85 3.37 4.12 3.02 3.73 3.12 4.84 3.98 86 3.19 3.90 3.32 3.50 2.81 4.44 3.03 87 3.01 3.71 3.04 3.31 2.53 4.03 3.28 88 2.86 3.59 2.80 3.11 2.31 3.62 2.97 89 2.00 3.47 2.50 2.91 2.12 3.21 2.07 90 2.41 3.28 2.21 2.65 1.95 2.83 2.39 91 2.09 3.20 1.92 2.30 1.83 2.49 2.16 92 1.75 3.37 1.02 2.03 1.65 2.21 1.93 93 1.37 3.48 1.30 1.70 1.49 1.97 1.73 94 1.05 3.53 0.83 1.31 UU 1.75 1.55 95 0.75 3.53 0.50 1.05 1.18 1.55 1.37 90 0.50 3.40 0.00 .75 0.97 1.32 1.15 97 3.28 .50 0.75 1.12 0.94 98 3.07 0.50 0.94 0.72 99 2.77 0.00 0.75 100 2.28 0.00 0.50 101 1.79 102 1.30 103 0.83 88 Mr W. Fraser 07i the History and Constitution of From the imperfect account which has now been given of the various investigations into the probable duration of human life, some idea may be formed of the difficulty and importance of ob-^ taining accurate tables of mortality. The Northampton tables were the result of many years'* arduous research and observa- tions, and were consequently long considered as representing the rate of mortality in this country more accurately than any others. Whether those tables may still be the most correct for the population at large, it were needless for our present purpose to inquire ; but it is obvious, from the long experience of the Equitable Society of London, and of that of the Government annuitants, — from the concurring testimony of Messrs Milne, Naylor, Gompertz, Davies, Babbage, and Finlaison, all men of the highest eminence, — and from the opinions of seve- ral other persons well informed in these matters, that the Northampton tables are unfit for the practical purposes of Health and Life Assurance. Messrs Morgan and Becher, no doubt, have endeavoured to support these tables, and have cer- tainly urged all that can be stated in their defence ; but, as is remarked in the Committee^s last Report, there " is not, in truth, even a prima facie case made out in their favour. It is admitted that those tables were originally formed in a degree upon hypothetical data ; the observations upon which they were founded come down no farther than the year 1780, or at the latest to 1 791 ; and it is not affirmed that they have been verified by any actual and subsequent observations, or by the experi- -ence of any society which has endured for a period sufficiently long to bring to sure test the accuracy of its calculations ;"" — and to the evidence of Mr Milne and Mr Naylor the Commit- tee more particularly refer for the objections to the Northamp- ton tables, (pages 80, 82 of this Journal.) In illustration of their effects, it is stated, that, according to the tables, out of 1000 persons existing at the age of 25, 3i3 will sur- vive at the age of 65 ; while, by the Carlisle tables, which appear to approach very near to the truth for the higher classes, no fewer than 513 will survive that age. Hence a society which should ;adopt the Northampton tables for annuities, would inevitably go ultimately to ruin, for it would in all probability have three annuitants where it calculated only upon two ; and of the 343 Benefit or Friendly Societies. 89 persons who would be annuitants, 98 would live for 15 years ac- cording to these tables, while 162 persons would survive through that period, and attain the age of 80 years, according to the Car- lisle tables. There is also given in the Report a comparison of the results of various tables of mortality, constructed from observations made in Britain, in France, and in Sweden ; but we shall only select those of this countrv. Of 1 00,000 persons ^ aged 25, there f would be alive f at the age of 65 j Of 100,000 persons ^ aged 65, there f would be alive i" at the age of 80 J Expectation of life ) at the age of 25 j Expectation of life \ at the age of 65 Value of an annui- ty of £ 1 on a life aged 25, interest at 4 per cent. Value of an annul- "I ty of £ 1 on a life f aged 65, interest l* at 4 per cent. J Value of a defer, -v red annuity of £1 # commencing at \ 65, to a life now /' aged 25, interest V at 4 per cent. J } By Dr Price's Table, found- ed on the Re- gister of Births and Burials at Northamptoji. 34,286 28,738 Sfears. 30.85 10.88 £ 15.438 £7.761 £ 0.55424 By Mr Milne's Table, found ed on the Mor tality observed at Carlisle. 51,335 31,577 Years. 37.86 11.79 £ 17.645 £ a307 £ 0.88823 By Mr Griffith Davles's Table founded on the Experience of the EquiUble Life Insurance Office. According to his First In- vestifjation, as mentioned in hl« evidence in 1825. 49,330 37,267 Years. 37.45 12.35 £ 17-494 £8.635 £ 0.88723 By Mr Finlalson's Tables, founded on the Experience of the Government Life Annuit. Mean of both Sexes. 53,470 38,655 Years. 38,35 12.81 £17.534 £ 8.896 £0.99078 According to his Second In- vestigation, as mentioned in his evidence in 1827- Mean of both SeJtes. 53,950 37,355 Years. 38.52 12.50 £ 17.634 £8.751 £ 0.98334 Note.— In the above Tables, it is to be observed, that the mortality is deduced from an equal or nearly equal number of each sex ; with the single exception of Mr Davies's Table founded on the experience of the E(iuitable, in which office, from the practical objects of Life Insurance, it is evident the male sex must have composed the vast majority of lives subjected to mortality. But as it is agreed on ah hands, that the duration of life among females exceeds that of nude*. It follows that the results of Mr Davies's Table fall materially short of what they would have been, if the facts on which he has reasoned had comprehended an equal number of each sex. No comparison is here given of the different values of sums payable at death ; but it may be stated that a society, whose 90 Mr W. Fraser o?i the Hidory and Constitution of premiums were calculated by the Northampton tables, and by interest at 4 per cent., would take from a person insuring at the age of S5, cither a single sum of £S67 : 15 : 5, or an annual pay- ment during life of £2^:11 : 5, for <^ 1000 payable at death ; while, by the Carlisle table, and assuming the rate of interest to be also 4 per cent., one single payment of £ S82 : 17 : 8, or an annual one of £ 15 : S : 5, would only be required. " Upon the whole, your Committee are of opinion, that the Carlisle Tablfes may prudently be adopted for general purposes, including that now in view, the valuation of an allowance in old age. Mr Finlaison's, which are the most recent of all the Tables, Avould, in all cases, give a higher expectation of life, and consequently require a larger payment from the members of a Friendly Society ; but the objection arising from selection does apply, in a considerable degree, to these Tables; and Mr Finlaison himself bears testimony to the sufficiency of the Carlisle Tables." — Report, p. 8. This opinion, with the immense mass of documentary and other evidence which has been obtained in the course of the late inquiries, cannot fail to be of the utmost importance to all ranks of the community, and to the higher classes in particular, as shewing both their rate of mortality from their own experience, and also the excessive premiums which they have usually been charged for assurances at death. While, however, the mortality of those in the better ranks of life has been found to correspond very nearly with that repre- sented by the Carlisle tables, it is by no means clear that the same rate prevails among the members of Friendly Societies. Regarding this contingency, no results from their experience have as yet been obtained ; but as sickness and accidents are undeniably increased among the working classes, by noxious and dangerous employments, by ill ventilated dwellings, scarcity of food and clothing, and by many other causes, from all of which the higher classes are in a great measure, if not altogether, free, 60 it necessarily follows that the mortality will be greater among the members of these Societies than among those of T.ife Assu- rance Associations. Nor can we reconcile the idea of a high rate of sickness with that of a low rate of mortality, as has been virtually done by Messrs Finlaison and Davies, in calculating their proposed rates of contributions and benefits for the mem- bers of Friendly Societies. Benefit or Friendly Sockiks. 91 Taking, therefore, those circumstances into view, and more especially that not nearly the same attention will be paid by these societies in the selection of their members, as is done by Life Assurance Companies, it is evident that a somewhat higher table of mortality should be adopted for the purposes of the for- mer than of the latter class of assurers. Security, no doubt, ought always to be a principal object of these societies ; but, as is remarked by Mr Babbage, " Safety is much more certainly sc- cureil by judging as nearly as possible the true risk, and adding an additional sum for security. If tables not representing the mortality of the class for whom they ai'e designed are employed, every step in the reasonings which are deduced from them is liable to increased error ; and if the calculations are at all com- pUcated, the errors so introduced may not improbably act on the opposite side to that which they were introduced to favour."" By referring, then, to the table of expectations of life at p. 86, it must be obvious that the rate of mortality adopted in the Re- port of the Highland Society of Scotland will represent pretty accurately that of the working classes, and consequently that their table is the most suitable for all the purposes of Friendly Societies. (To he continued,) Sketch of tlic Physkal Geography of tJie Malvern Hills. By William Ainsworth, Esq. Member of the Royal College of Surgeons, Edinburgh, &c. (Communicated by the Au- thor). JL HE Malvern Hills form a range running nearly due north and south, through part of the three counties of Gloucester, Worcester and Hereford, and seldom attaining any great height ; but their rugged outline, and bold accHvity, rising abruptly in the centre of a champaign and level country, make them re- markable, giving to the eye of the stranger *the same impres- sions of independence of origin and formation, as their difference of structure does to the judgment of the geognost. They have not unaptly been compared to the Sierra of the Spaniards, 92 Mr Ainsworth cm the Physical Geography From their peculiarity of outline, height, and pointed summits, they are fully entitled to be called mountains, though, as La- mouroux ( Cours elementaire de Geogf. Phys.) would say, moun- tains of the second and third order. They are one continuous range, having no lateral branches; they have no pseudoor ex- tinct volcanoes, or ignivomous mountains ; nor do they present any mineral allied to the products of volcanic action, excepting in as far as they are composed of primitive granite (Daubeny cm Volcanoes). Their form varies but little : the Worcester- shire Beacon, and the two most southern hills, have the most acute pointed summits. The Herefordshire Beacons have been altered by the labours of the Romans, digging trenches in the talus for their encampment ; while the adjoining hills, which will be found to be the oldest districts of the range, present the most rounded tops, as being formed of more easily decom- posed rock. Two of the hills are cultivated to their very sum- mits : the ground is tilled by means of three-pronged forks ; and there is but a very slight difference between the abundance and date of ripening in the crops reared on the hills, and those vegetating in the valleys below. The summits are not dis- tirictly marked out from the acclivity : there are about sixteen in the whole range ; a few are isolated, but more generally they are connected, as in the hill between the Whyche and the Sedbury and Upton road, which, rising gradually from the south, forms five summits, before it reaches the highest point, where it forms an insulated prominent head, which the Nor- wegians, whose language is rich in names for the different forms of mountains, call Kullen, while a round or less promi- nent hill is Nuden (Von Buch, p. 52.). From this point it afterwards descends, forming another rival series of summits, to where the pass is hewn out of the solid rock for the Whyche road *. The rock in this case every where rises to the north, so that one of the extensive slopes lies in the direction of the dip of the mountain rock, another in a direction contrary to • The last southern summit of this range, descending towards the Here- fordshire Beacon, makes a curve round to the west, forming a table land, on which houses are built, and part laid out in gardens. The Herefordshire Bea- con descending with a gradual slope to the east, bends slightly round in that direction ; the convexity of the first corresponding with the concavity of the of the Malvern Hills. 93 that dip, and on that side the summits are more abrupt, and the acclivities less clothed with vegetation. The highest hills of the range, viz. the North Hill and the Worcestershire and Herefordshire Beacons, have a more perpendicular slope to the north ; and throughout the whole range, the angle of the acclivity is greater on the southern and eastern than on the nor- thern and western aspects. The ridges are also much more nu- merous and distinctly marked on the north-east, than any where else. There are, strictly speaking, only five valleys, and all of these run in transverse directions ; nor is there a single valley to be met with running longitudinally with the mountain-range. Wherever they occur, roads are cut through them ; the deep- est is the one through which the road passes from Sedbury to Cheltenham. No boulder-masses or field-stones are found in these valleys ; and the alluvial or transported soil seldom ex- ceeds twenty or thirty feet in depth on the base of the hills. No river of any magnitude takes its rise from this range. The springs are numerous : there are eight to the west, and as many if not more to the east ; they have long been remarkable for their purity, but have only met with a few advocates for any pe- culiar medical efficacy, their chemical analysis not favouring any such views. They are so superficial, that experiments on their temperature did not afford an approximation sufficiently identi- cal, or approaching to the mean temperature oi the latitude or locality, to be worth recording. Those rising on the east run their course immediately into the Severn : those on the west, on the contrary, divide in their direction from the Herefordshire Beacon, which is thus shewn to be, though not the^highest hill, yet the most elevated part of the range corresponding to its geo- gnostical importance. Those to the south run into a stream which joins the Severn at Gloucester : those on the north join the river Cadwell, which unites with the Terne, the latter fir nally emptying its waters into the Severn at Leigh near Wor- cester. latter, exemplifying that the same rules exist with segments of spheres, as Buffon has laid down with respect to angles, and thus the valley through which passes the Sedbury road is formed. 94) Mr Ainsworth 071 the Physical Geography An examination of the geognostical structure of tlie Malvern Hills offers the following positions : liY, That, throughout the whole range, the various rocks entering into the composition of the mountain-masses contain no organic remains. 2d, That in no place are they found superimposed on, or alternating with, rocks containing organic remains, or which, from mechanical analysis,' are known to be formations deposited subsequent to the appearance of organization. From the most northerly point to as far as their structure can be investi- gated in the south, they present an uniform series of primitive rocks, from highly crystalline granite to the more compact chlorite-slate ; and the transi- tions between these two rocks may, with a little patience of research, be traced throughout all their gradations ; — not that these gradations occur exactly in accordance with the relative situation of the mountain-masses, but that, in particular localities, such transitions are distinctly marked out. The central part of the range, comprising the Herefordshire Beacon and its table land, the hill extending to the north to Whyche road, and the hill above Eastnor Wood to the south of the Beacon, arc all composed of granite, with slight lo- •cal variations of texture. Dr MacCuUoch has remarked, that specimens may frequently be obtained from beds of gneiss, undistinguishable from genuine granite, an example of which he mentions as occurring in South Uist ; and fur- ther remarks, " that the views of the geologist, embracing a wide field, must not be limited by variations which are minute, irregular, and inconsistent, and which do not affect the broader principles that regulate his investigations." However just these remarks may be, they admit of too much latitude of ex- pression to accord with the severe science of a philosophy founded on obser- vation alone. From the slaty appearance Avhich these rocks sometimes pre- sent, — ^from the general tendency which, throughout the whole mountain range, they show towards assuming the appearance of gneiss, the more crys- talline portion of the series might be considered as mere varieties of that for- mation. This suggestion I would, however, strongly oppose. To assign the proper denomination to a rock whose connexions and mechanical texture offer distinctive and recognizable characters, is a basis to all strict geognostical science. When, therefore, we find a rock in all its characters a representa- tive of granite, assuming the highest situation in the range, independent in itself, and only varying through gradual transitions into subordinate forma- tions, it becomes a genuine granite, and in situation and chemical constituents marks itself out as the oldest rock and basis of the mountain range. Its in- vestigation in situ is interesting, and affords in its localities very marked dis- tinctions. The hills which it forms, though bold and rugged in their outline, are nevertheless the most rounded at their summits of any in the range. The Herefordshire Beacon, which I have already mentioned, may be divided into two summits, each having the remains of a Roman encampment on it, as well as the neighbouring southern hill, formed of a red granite, in which flesh-coloured felspar is by far the most abundant ingredient, mica being a rare component, and often entirely wanting. The whole rock appears so liable to decomposition, that near Eastnor Wood it is quarried and sieved for gra- vel It bears a great analogy to the red granite met with between Loch 2 of the Malvern Hills. 95 Gilphead and Inverary ; but its effects in destroying vegetation „i. lUc sides of the hills are not so remarkable as in the Grampians,— a circumstance most probably owing to the diminished height, less j)erpendicular slope, and more genial clime of the Malveni Hills, than to any material difference in the con- stituents of these two rocks. It is worthy of remark, that the ridges by which the Koman encampments are still so distinctly tracetl, are scooped out of the granitic rock itself, and that the walls are not, as might be supposed, the gra- vel, and other residue of digging the furrow, but always formed of the native rock, which, to the present day, crops out in some situations hard and un- changed by the lapse of years, and must have presented a much more secure barrier than the unconnected residue of their operations, placed without sup- port on an abrupt and oftentimes precipitous acclivity. On the hill between the Scdbury and Ui)ton, and the Whyche road, which rises from the two opposite points of the compass to a summit which attains an elevation of more than 1500 feet above the level of the sea, this granite becomes more compact, retaining, however, on the summit, the same charac- ters ; but on the road, where several extensive sections are to be met witli, becoming much changed, and at times its constituents are almost amalga- mated the one into the other, being at some points, more especially at a q\iarry on the Sedbury road, very nearly allied to a chlorite-slate. This quar- ry, towards its upper part, presents very much the appearance of distinct stra- tification. In fact, wherever large sections of this or the former rock occur, they may distinctly be perceived to have a dip towards the south, and invo- luntarily give to the mind of the geologist the idea of a once stratified rock heaved up, deranged in the parallelism of its strata and the uniformity of its direction, yet still preservii-g the same dip and inclination. Not fifty yards from the milestone near the last-mentioned quarry, a vein of the same com- pact feldspathic rock may be seen rising in an almost vertical direction, and traversing the adjacent strata almost at right angles : it is scarcely two feet broad. At the section made through the rock, affording a passage for the Whyche road, the red granite may also be perceived occupying apparent- ly distinct localities, presenting the appearance of beds in the more com- pact and frequently ironshot mountain-rock. The mica at this point becomes more abundant, and soon forms the principal constituent. The red gra- nite is frequently almost entirely feldspathic ; beyond the hill crystals of hornblende first make tlieir appearance, and becoming gradually more abun- dant, have led the English geognosts to consider the whole as a sienitic for- mation. Undoubtedly if in any part of the range such a rock occurs, a few partial beds are to be met with here, but not in sufficiently extensive forma- tions to be considered as the basis of the range ; but to this I shall liave oc- casion to refer afterwards. The investigation of the geognostical structure of the two most nortlicriy hills in the Malvern range, though interesting, presents little variety. Known by the names of the Worcestershire Beacon and the North Hill, they lie nearly due north and south of one another, the latter being the more nor- therly, and intersected by a narrow valley, deeper and more abrupt on the eastern side. No stratification is discernible excepting on the western asiH?ct> where a gentle dip to the north may be perceived, and a direction of its strata 96 Mr Ainsworth on the Physical Geography apparently east and west. On the eastern side, the new red conglomerate * makes its appearance, covering the sides of the Worcestershire Beacon. The occurrence of this formation implies either a breaking and elevation of its strata, by causes similar to those to which perhaps the Malvern Hills owe their existence, or the deposition of the sandstone subsequent to the hills, a supposition implying a stratification of the last-mentioned rock nearly paral- lel to the acclivity of the hill, or in a more or less concave form filling up its base, neither of which last mentioned appearances are presented by this rock ; and, in the second place, implying an elevation of the formation, which, ac- cording to Werner, in common with aU floetz rocks, is at once chemically and mechanically deposited, little supported by the confined limits of the forma- tion. To the north-west low hills of limestone are found running nearly parallel with the portion of the range which they face. The rock interposed between them and the granite is old red sandstone, and in their organic remains and texture they bear too remarkable an analogy with the hills of the same for- mation which crop out, bounding at intervals the red marl across the whole of England, not to be referred to the same formation which at Caleford is as- sociated with the old red sandstone, and with greywacke at Chepstow and Monmouth. The mechanical analysis of the rocks forming these two hills, indicates that both are mountain-masses of granite, presenting, however, great variety of texture, and appearances, with difficulty associated by the geognost. The granite is generally speaking close-grained, containing both mica and horn- blende, the latter, however, often entirely wanting ; highly crystalline gra- nite, with little mica and no hornblende, becoming as much a part of the mountain-mass as that formation. It occurs principally en filons, which is particularly remarkable at the pass through which the Whyche road is cut. If, with Jameson, we consider strata as similar contiguous masses, and beds as dis- similar, these filons will come under the latter denomination, and so we may avoid exciting prejudices by adverting to the stratification of granitic rocks. In these beds felspar is the most abundant constituent, — not, however, oc- curring in prisms, disseminated through a quartzose basis, but rather itself forming a basis for imperfectly crystallized quartz, with now and then partial scales of mica. On the Worcestershire Beacon, a vein of quartz, of a few feet in breadth, occurs traversing the rock in a nearly vertical direction. On the southern part of the hill, a hole has been dug, with a view of obtaining for strangers visiting these hills specimens of mica, which, from their highly me- talline lustre, have been called gold -j-. This is a bed traversing the granite • This formation, the variegated sandstone (Bunter sandstein) of Werner, has not unaptly been called by the English geologists Red Marl, as, whenever I have applied acids, the application has been accompanied with effervescence. Though, as its name imports, its general colour is red, yet it almost everywhere, where large sections are presented to the eye, exhibits streaks of a more compact sandstone, of a light blue or cream colour. t The decomposition of granite first commences from a chemical change taking place in the iron, which, in however smaU quantities, is yet universally distributed through the mineral king- dom. The water aud extraneous moisture gaining access to it, converts it to a state of hydrate and peroxide, increasing its bulk, and thus destroying its amalgamating effect on the rock, and, at the 4 of the Malvern Wills, 97 ih a direction nearly at right angles. Wherever I coiUd examine it, it wc.i so weathered as to render my decisions very fallacious. It has, however, to Jill appearances a decomposed basis of felspar (clay -slate) with folia of mica, to- wards tlie surface, and, when exj)osed to decomposing agents, (Mssessiiig a high metalline lustre, becoming towards the centre of the rock, dark and shining. If the formation was sufficiently extensive, it would be called a porjjhyry. I have only met with an account of a similar rock occurring near Felsobanya in Transylvania, and in Saxony. With respect to the accuracy of denominating these formations Sienite, 1 need only remark, tliat, notwithstanding it has been proved that the rock from which a supposed similar series has received its name from the time of Pliny, is not a compound of hornblende, quartz and felspar, as first advanced by Werner, and that this name becomes no longer applicable to the same set *, still, under all circumstances, this rock has no claim to that title : the dissemination of hornblende is not universal, though in some places abundant, yet it is regulated by particular localities. The existence of mica, in some places so abundant, is at once decisive as to its real characters ; and though hornblende is met with as a mineral occur- ring often in abundance, but yet not so universally as to be entitled to be called a mineral constituent, or to give to the formation a name depending on its occurrence. Under these circumstances, Worcestershire Beacon and North Hill, like Hereford Beacon, will be formed of granite, containing occasionally crystals of hornblende, and associated with gneiss, which, with little variation, forms the northern part of the Beacon, and the whole of the North Hill. I did not perceive it any where alternating with the granite* To the north, then, the central granite varies slightly in its appearance, becoming slaty -granular, yet scarcely ever losing its distinctive characters. Towards the south, however, it presents more remarkable differences, and be- comes scarcely recognisable in the more compact and less crystalhne rocks forming the southern outline of the mountain-range. On the hill to the south of Hereford Beacon, a cave has been artificially hewn out of a portion of the mountain rock, which juts out beyond the regular acclivity, bar- ren, and covered only with a few stunted lichens. In this cave, though not many feet deep, the Hypnum splendens and luiescens, and a Bryitm^ ])ut forth their leaves to a vegetation never exceeding five or six lines in length, and then wither. This portion of the rock is more compact than the body of the hill, and proves that the nature of the mountain must not be judged of by the examination of a portion which, by the opposition its structure of- fers to decomposing agents, is barren, and unclothed with vegetation, offering, same time, by the increase in size thus given to its particles, disseminateti so generally through the mass, uniting chemically and mechanically to destroy the cohesion, and Influence the further de- composition of the rock Itself. In a close-grained granite, the felspar becomes of a redder hue, and k gradually reduced to an impalpable powder, or from the quantity of alumina entering Into its com- position, forms a basis of slate-clay : the pieces of quartz change gradually their form, and gene- rally roll off in the shape of pebbles ; while the lamella: of mica, the last to be decoropoted, oftm t-xhibit a metalline lustre. • M. de Humboldt has proposed the name of Sinaite. OCTOBER-i— DECEMBER 1827. G 98 Mr Ainsworth on the Physical Geography at tlie same time, great facilities to the geognost ; for, as in this case, they will generally be found to vary a little in their structure, — circumstances which, of themselves, account for their solitary bleakness, when compared with the other side, and oftentimes the adjacent portion of the hill. The first transi- tion is, when the quartz becoming less extensive, and the mica more abun- dant, at the same time assumes gradually a more lamellar aspect, and becomes a distinct gneiss. This transition may be observed on the hill forming the third summit to the south of Hereford Beacon. Its next transitions are two- fold, on the one hand losing almost all parallelism of lamellae, the mica less dis- tinct, and becoming more or less amalgamated with the other constituents, forming a blue chlorite-slate, at times very much resembling the same forma- tion as it occurs on the north of Tarbet Bay, in the Mull of Cantyre, and known to Faujas St Fond and other old geologists by the name of Lapis ol- laris. It is this rock, Avhich some authors, mentioning the occurrence of green- stone in these hills, have, I suppose, mistaken for it. On the other hand, the mica becomes still more prevalent in the rock, the slaty structure more decidedly marked, and in all its characters it approxi- mates to mica-slate. This may be most distinctly seen in the London road that crosses the southern extremity of the hills. De Saussure has very ex- pressively called gneiss Granite veine. The term conveys the ground of dis- tinction between gneiss and mica-slate ; yet the distinctive characters of this rock are not sufiiciently well marked out to warrant its receiving the latter appellation. To the west, it again becomes very compact, and less crystal- line, the mica becomes almost entirely lost, and the rock becomes a dark quartzose mass. Finally, this last hill is divided by the deep valley through which courses the London road from a mountain-mass of gneiss and chlorite- slate, whose compact structure, and power of resisting decomposition, have given to the last-mentioned hills more acute summits than any others in the range. The transition of the gneiss into green chlorite-slate, I did not ac- tually trace in situ ; but, by fracturing some of the larger pieces rolled down the sides of the hills, or even examining the broken stones on the road, many examples will be found, fully demonstrating that it is a mere transition of the first-mentioned rock into a more compact and less distinctly lamellar mass. Beyond this, cultivation has effaced the bold outline and rugged grandeur of the primitive mountains, and the line between the old rocks and the super- incumbent formations becomes totally lost. From these investigations, the following general facts may be deduced : 1. That the Malvern Hills are composed of that class of rocks denominated primitive, including granite, gneiss, and chlorite-slate. 2. That these rocks are indefinitely stratified, having generally a direction from east to west, and rising with little variation to the north. 3. That they contain no organic remains, nor are ever found alternating with or superimposed on rocks of a more modern formation, and that they are of a formation much more ancient than the surrounding rocks ; and though theoretically, it is not impossible that they might have assumed theii* present situation at a period more modern than the deposition of the old red sandstone, or even of the red marl, that they nevertheless of the Malvern HilU. 99 are neither chemically or mechanically connected with those formations, hut of a much older date. 4. That as they are older, so they assume a more lofty situation than the sur- rounding more modem formations, even than the oolite capping the summits of the Cotteswold range, or the transition limestone of Bristol and Calesford. 5. and lastly^ That, in their nature, situation, and appearance, they hear evi- dence with the granitic hills of Cumberland, North Wales, Anglesea, Cornwall, and more esj)ecially Mount Sorrel in Leicestershire, that the intricate and numerously alternating modem formations of England, lie upon rocks of granite *. In their mechanical analysis, the Malvern Hills aifbrd A highly crystalline compound of flesh-coloured felspar and quarts;. Of felspar, quartz and mica. Of felspar, quartz, and hornblende. Of felspar, quartz, hornblende, and mica. Of felspar and mica. " These are all referrible to the class Granite, varying in the predominance and proportion of the ingredients. In the next transition, the rock becomes more compact in its texture ; and the folia of mica ranging themselves in lamina?, give a veined appearance to the formation. This is genuine gneiss, distin- guishable, as found on the Malvern Hills, into \st^ Gneiss, in which felspar and quartz are tht'most abimdant ingredients. 2eith Harbour Bill, then before Parliament, and other considerations of delicacy, the author requested us to delay its publication. There being now a variety of opinions regarding this object of great commercial importance, we have obtained Mr Stevenson*s consent to the publication of an excerpt of the Memoir.—EDiT. Mr Stevenson oji British Harhoiirs. Ill authorities of the town of Leith. I am now, therefore, to give some account of it, and to state what appears to me most suit- able for its improvement. At high-water of ordinary neap-tides there is a depth of only about eight or nine feet at the present entrance of Leith Har- bour, and in spring-tides the depth is about thirteen or fourteen feet. From the pecuhar form of its piers, and, particularly, ow- ing to a considerable extension of the eastern pier beyond the western one, as will be seen from the accompanying sketch-plan, vessels are by this means often shut up for a length of time with north-westerly winds. Till of late years the birthage of the harbour was confined to the bed of the river, and had be- come so extremely incommodious from the increase of shipping, that its enlargement became indispensable. An additional reve- nue was accordingly provided ; and two spacious wet-docks, ex- tending to ten acres, were formed. These docks have proved a vast accommodation to the port ; but a great desideratum still remains, in the want of a sufficient depth of water, and a more commodious entrance for the reception of large ships. If we inquire into the cause of the shallowness of the water at Leith, and generally along the southern shores of this frith, it may be accounted for, on the great scale, by the set both of the flood and ebb tides, in the following manner. The strongest current, for example, of the flood-tide, in its course from the At- lantic Ocean, runs along the coasts of Caithness, Aberdeen, and Kincardine, to the higher parts of the Frith of Forth, meeting with comparatively few obstructions on the northern side; whereas the stream of tide which supplies its southern shores, separates off* St Abb's Head, in Berwickshire, — one branch of the tide pro- ceeding to the English coast, and the other along the Lothians up the Frith. This last, however, has more the character of an eddy-tide, having changed its course almost at right angles, at or near St Abb's Head, and being further intersected in its pro- gress by the Bass and other islands lying off* the coast of Had- dingtonshire. At Gullen Ness, which forms one of the chops of the inner part of the Frith, the channel suddenly expands into the comparatively great bay of Musselburgh. This expanse gives another check to the velocity of the tide, which at Leith is again obstructed by a chain of rocks extending toward Inch- keith, throwing the currents, both of flood ^aiid ebb, still off the 112 Mr Stevenson on British Harbours. southern shore. Between Lcith and the Narrows at Queensferry, the incumbrance is continued by the interposition of Cramond Island and the foul grounds of Mickery and Oxscares, which altogether are favourable to the process of deposition on this shore ; while the force of the current and consequent depth of water are increased upon the northern »ide. Of this we have an anomalous example at Queensferry, where the soundings are about thirty-five fathoms in depth, and consequently greater than on the same parallel of latitude any where between the Frith of Forth and the opposite coast of Denmark. The great obstacle to the improvement of the present entrance of Leith harbour arises from the extensive flat or bank trend- ing northward to the rocky grounds called the Symonds, lying seaward of the Martello Tower, as delineated on the annexed Sketch of the shore between Leith and Newhaven, shewing the figure of the bank and the position of the respective rocks in the oflSng. On the southern side of the Frith, immediately above Newhaven, the scouring effect of the tide is chiefly with the ebb, and thus we account for the peculiar form of the sand-bank off* Leith, and the greater depth of water ofl* Newhaven : at this place the bank is comparatively narrow, and it attains its great- est breadth off* the entrance to Leith Harbour. The scouring effects of the river Leith are, no doubt, benefi- cial to its alveus ; but if we carefully examine this matter, we shall find, from the extent and flatness of the ground, that its influence is, upon the whole, languid. The bar does not consist of mud, but of sand, similar to that which is deposited above and below Leith. It is not a particular ridge, but an extensive flat, which has its origin in the local set of the tides, arising from the configuration of the shores opposed to the tidal current. I am therefore of opinion, that every effort to deepen the present entrance of the harbour, which stops short of carrying two con- tinuous piers at a very moderate distance from each other, sea- ward of the Symond Rocks, or to the extent of about a mile from the shore at Leith, will not only prove ineffectual, but that one pier, of any form, which extends much beyond the other, will prove ruinous to the best interests of the port. I would not, however, be understood as recommending so extensive a plan of operations, as the extension of piers to the Symond Rocks, Mr Stevenson on British Harbours. 113 but merely as stating what humbly appears to be the only prac- ticable mode of deepening the present entrance to the harbour of Leith. In quest of this object, some have projected the extension of a single pier, in various hues of direction, toward the Martello Tower, as a weir to the current. Others, with somewhat more plausibility, carry two piers to a certain extent over the sand- bank, and then proceed with one pier to the Martello Tower, as shown in dotted lines upon the Plan. I confess that I have ne- ver been able to satisfy myself upon this point, either as to its beneficial effect upon the bar, or its proper influence upon the accessibility of the harbour. To illustrate this, we simply refer to the Dresent state of things. For example, every one conver- sant with the nautical localities of Leith knows the difficulty ex- perienced in leaving the port with north-westerly or favour- able winds down the frith. In such cases, a vessel must cast qff^ or make sail, from the western pier, beyond which the east- ern one projects about 100 yards. But let us imagine that this single pier were extended to a mile, or even 1000 yards, and then, according to our views of seamanship, the difficulties at- tending the access of the harbour would be increased tenfold ; or, as before noticed, " it would prove ruinous to the best in- terests of the port." To obviate this state of things, it has been proposed to pro- ject a pier from Ncwhaven, till it meets the continuation of an eastern pier beyond the Symond Rocks, or seaward of the Mar- tello Tower. By this means, several hundred acres of sand-bank, which dries at low-water, would be included in the form of a great outer harbour. In this case, it appears to be impossible to avoid the silting up of so large a space as would thereby be included by the two piers projecting respectively from Leith and Newhaven, while the effect of the winds, at high-water, upon a surface of about one mile in breadth, would render it extremely difficult to transport vessels through it, to or from the interior harbour. It is therefore to be feared, that, after ha- ving expended a very large sum in either of these diversified operations, we should only have an incommodious, if not im- practicable, harbour. Having made these observations on the set of the tides, and the natural situation of Leith harbour, in alkision to various OCTOBER — DECEMBER 18.^7. H 114 Mr Stevenson on British Harbours. plans latterly suggested for its improvement, we shall now en- deavour to inquire into the effect and tendency of executing in whole, or in part, the apparently abandoned plan of the late eminent Mr Rennie, and upon which, it is believed, upwards of .^'^OOjOOO have already been expended. When Mr Rennie was consulted on this subject, about the year 1800, he had before him an early design by Mr Whitworth, a celebrated engineer of his day, who had proposed to extend the birthage of the harbour, by following the course of the river above Leith Saw-mills. But when Mr Rennie maturely considered this subject, and took into view the natural difficulties which present themselves, to forming a deep-water entrance to Leith harbour from which the tide ebbs to the extent of about one mile, he was properly induced to form a design suitable for vessels of a greater draught of water than were generally in use in Mr Whitworth's time, by opening a communication at Newhaven. Now, as the greatest breadth of the sand-bank above alluded to is immediately off the present entrance to Leith harbour, and as the bank becomes narrower as we approach Newhaven, a more commodious line of direction is evidently by the erection of a continuous sea-wall toward Newhaven ; where a sufficient depth of water may be obtained for His Majesty''s ships of war. After therefore consulting with that eminently scientific naviga- tor, the late Captain Huddart, who made a survey of Leith, Mr Rennie ultimately determined upon placing the deep-water ac- cess to the harbour near Newhaven, as delineated in dotted lines upon the accompanying Plan. I have endeavoured to give the subject of the improvement of this harbour every possible atten- tion, and I am humbly of opinion, that no design for this pur- pose has yet been submitted to the public, which seems to warrant the total abandonment of Mr Rennie's plan. I am also confi- dent that it may be satisfactorily shown, not only to be the best which, under all circumstances, can now be followed ; but also, that the least expensive mode of obtaining a deep-water entrance is to continue the sea-wall from the docks westward ; for I do not now propose a suite of docks from Leith to Newhaven, but merely a tide-harhour, which might be occasionally scoured from the present wet-docks. To take a practical example of this, let it be observed that a sea-wall from the wet-docks toward Newhaven would not be more than two-thirds of the extent of the pier required, to carry a ship to a similar depth of water Mr Stevenson 07i British Harlours. 115 off the Martello Tower, as may be seen from the accompanying Plan. Wc are aware that the proposed entrance at Newhaven is dis- tant from the chief scat of business in Leith, and that it is dif- ficult for those accustomed to the present state of things to look favourably u{X)n any other view of the subject ; but, in j>oint.of fact, the pier-head near Newhaven would not be more distant from the central parts of Leith than a pier at the Martello Tower, while the former would be much more commodious and acces- sible than the latter. In every extended port, more or less in- conveniency of this description is felt ; and if the situation of the merchants of Leith be contrasted with that of their brethren of London, Liverpool, Dublin, and many others, they will appear to have little cause to complain, although the entrance of the harbour were at Newhaven. Upon the whole, I hesitate not to recommend that the en-» trance to Leith harbour should forthwith be improved upon a moderate scale. Its present condition is a source of much incon- veniency. to the trade of Leith, having, perhaps, as difficplt and awkward an access as I have anywhere met with in the whole course of my survey, and personal observation, on " British Harbours '"* between the Shetland and Scilly Islands. I am fur- ther of opinion that a sea-wall should be extended from the wet- docks toward Newhaven, and that a deep-water entrance should there be formed, upon the principle, if not the form, suggested by Mr Rennie. This, as formerly stated, I conceive to be the most proper and convenient mode of acquiring a sufficient depth of water, and also the most economical mode of improvement of which the port of Leith is susceptible. Observations on the Coal-Jield, and accompanying Strata, in the vicinity of Dalkeith, Mid-Lothian. By Robert Bald, Esq. F. R. S. E., M. W. S., &c. Mining-Engineer * (Com- municated by the Author.) JlXaving, in a former paper, which I read before this Society^ made several observations upon the Mid-Lothian Coal-fields, I have, since that time, made many investigations of this very in- teresting district ; and these confirm tlie ideas I had formed of • Read before the Wemerian Natural History Society 7th April 1827* h2 116 Mr Bald on the Coal-field the coal strata in the vicinity of Dalkeith, viz. that the edge- coals, and accompanying strata, found at the collieries of Drum and 'Gilmerton, four miles south of Edinburgh, with the well- known bed of limestone, which lies immediately under all the workable coals, decline into the centre of the valley, southward, to a very great depth, and then deflect, rising to the south, and are again found at Dalkeith, where the lime rock, under the lowest workable coal, is found, and wrought extensively. We therefore conclude, that the bed of lime-rock in the lower part of the Dalkeith section, is a continuation of the lime-rock at Gil- merton ; that the coal named the Parrot Coal in the sections, corresponds with the lowest coal at Gilmerton, next the lime- rock, named the North Green Coal ; and that the several coals above the parrot-coal in the section correspond with the edge- coals which lie above the said north green coal. The following minute section of the strata was made in the course of running a day-level some years ago from the South Esk, to drain the Marquis of Lothian's coal-field along the Ro^ man-camp Hill. The strata cut through had a dip of from one in four to one in three ; but the section now exhibited shews the strata in a perpendicular line at the South Esk, calculated from the horizontal section ; which perpendicular section extends to the depth of 387 fathoms to the lime-rock. In it are found no less than 27 beds of coal, making a total thickness of 82 feet 8 inches. The different beds of separate and distinct coals passed thrpugh are of various thickness, extending from 6 inches to 9 feet, and lie at very various distances from each other, as is com- mon in all coal-fields. Section of the Coals, and their accompanying Strata, beginning at the surface. Fath. Ft. In. Fath. Ft. In. 1. Alluvial soil - - 2 Brought forward 10 4 6 Slate sandstone - 2 10. Coal - - - 6 White sandstone - 4 Indurated clay - 14 Red sandstone - 2 4 Do. do. hard - 10 5. Blue sandstone - 10 ^q^| . . _ 16 White sandstone - 4 indurated clay . 16 Red sandstone - 5 15. White sandstone - 16 Slate sandstone - 3 Red sandstone - 5 3 Slate clay - - 2 6 slate clay -.040 Garry forward 10 4 6 Carry forward 20 2 6 in the vicinity of' Dalkeith. 117 Fath. FU In. 1 Fti . Ft. In. Brought forward 20 2 « Brought forward 121 4 6 White sandstone 3 Indurated clay with Coal 3 Slate clay 1 2 G5 Bituminous shale _ 1 20. White sandstone 3 Do. very hard 1 3 Slate clay, very hard 3 White sandstone 6 Do, do. soft 4 6 Indurated clay 4 €oal 2 White sandstone 4 Indurated clay 1 70 Indurated clay 3 25. Red sandstone 3 3 Do. soft 3 Slaty sandstone 2 White sandstone 4 White sandstone 3 Red sandstone 2 3 Slaty sandstone 2 1 White sandstone 1 c Slate clay with Coal 3 75 Coal 2 6 30 Slaty sandstone 2 2 Indurated clay 1 4 Red sandstone 3 3 White Sandstone, hard 3 3 Slate clay with Coal 3 c Slaty sandstone 10 Indurated clay 1 Slate clay 2 4 6 Coal 2 9 80 Grey sandstone 1 35 Indurated clay 3 Slate clay 1 1 6 Red sandstone 10 Red sandstone 3 Indurated clay 1 Slate clay 8 Red sandstone 11 Grey sandstone 2 Bituminous clay 85 Coal 3 40 Red Sandstone 4 Indurated clay 1 4 6 Indurated clay Whitish; sandstone 13 3 Red Sandstone Slate clay with ironstone Bituminous shale balls - . 16 Red sandstone 2 White sandstone - 7 45 Slate clay 1 2 90 Slate clay - 4 Red sandstone 1 White sandstone . 5 Slate clay 3 Slate clay - 1 3 Red sandstone 1 3 White sandstone . 6 3 Slate clay 5 Slate clay - 1 50 Red sandstone 2 3 95 White sandstone . 1 2 Slate clay, very dark 3 Slate clay with ironstone 6 1 6 Do. lighter - 1 1 Bituminous shnle, < :oarse 1 Indurated clay, coarse 3 3 Slate clay with ironstone 1 White sandstone 1 3 Red sandstone 2 4 65 Slate clay, very dark- 4 100 Coal 3 Do. light 2 3 Slate clay 2 4 Do. white 1 1 White sandstone 4 Red sandstone 10 1 G bo. 2 3 Slate clay 1 Do. 4 4 00 (Iroy Sandstone 3 3 105 Slate clay 4 Slate clay 4 White sandstone S Red sandstone 6 3 Blue sandstone 1 4 6 Slate clay 4 « Red sandstone 4 6 Carry forward 121 4 5 Carryforward 148 3 5 118 M rBald on the Coal-field Fath. Ft In. Fath. Ft. In. Brought forward 148 3 5 Brought forward 293 3 11 Slate clay - 2 White sandstone 4 4 c 110 Coal . 2 Coal 3 Slate clay with ironstoi le 2 Slate clay 4 6 White sandstone . 1 3 145 Coal 6 Slate clay with sandstone 2 2 AVhite sandstone 3 3 Slate clay - 3 Slate clay with Coal 4 6 115 Coal - 2 3 Slate clay 2 Indurated clay - ^ 3 Coal 2 6 White sandstone - 1 4 150 Slate clay 1 Slate clay, liard - 2 3 White sandstone 3 4 Coal 3 Coal - . *" 4 6 120 Indurated clay - 3 Red sandstone 4 Red sandstone - 3 4 154 Coal 3 8 Slate clay Coal _ 1 4 _ 3 Total ascertained depth 316 2 7 Indurated clay - 3 Various strata 15 1 125 Red sandstone with abed A Coal 3 G of slate clay - 9 4 6 Various strata 6 Coal - - - 1 3 B Coal - - . 1 Indurated Clay . 0* 2 6 Various strata, depth not White sandstone - 5 precisely ascertained; Slate clay - 1 3 but the coals marked J30 Coal - 3 A, B, C, D, E, are White sandstone _ 2 3 from the best informa- Slate clay . 4 6 tion that could be ob- Coal . 2 tained, 19 9 Indurated clay - 1 6 C Coal 5 3 135 Slate clay - 1 1 6 Various strata 3 2 3 Coal - 3 D Second ©jlittt Coal 3 9 Slate clay - 2 1 Various strata 19 3 Coal - 4 6 E Iparrot Coal 3 Slate clay, light - 2 3 Various strata 4 140 Do. dark Do. light 1 1 fi ." X J. 2 D 3 Total supposed depth 387 1 1 f Then the t LIMESTONE ROCK, Carry forward 293 3 11 &c But great and valuable as this section shews the Mid-Lothian coal-field to be, it only comprehends the class of Edge-Coals on both sides of the coal basin with the underlying bed of lime- rock. None of the very valuable coals, termed the Flat Coals, which chiefly supply Edinburgh, are comprehended in it ; for hitherto the strata betwixt the upper coals in the section and the flat-coalsj which lie above these, have not been accurately ascer- in the vicinity of Dalkeith. 119 taincd, but the chief of these coals are presently working at the collieries of SlierifF-hall and Edmonstone in the middle of the valley, and are well known in the Edinburgh market ; particu- larly the two named the Diamond and the Jewel coals, which are of very superior quality. The following is a Section of the Coals in the Edmonstone Colliery district. ROCKS. COAL. Fath. Ft. In. Ft. In. Alluvialcover 8 Rock strata 6 Coal 5 5 Various rock strata (containing Coals) 31 Splint Coal 5 6 Various strata 6 4 6 Coal, named Coal-llough 4 6 4 6 Various strata 5 3 Coal named BeefFy Coal 3 3 Various strata 12 1 6 Diamond Coal 5 5 Various strata 4 1 6 Jewel Coal 5 5 78 2 27 6 There is a coal said to be much mixed with pyrites, named the Gold Coal, which lies under the jewel coal, but it never has been wrought, nor the strata explored accurately under it. The strata betwixt the upper coal in the Dalkeith section and the pavement of the jewel coal have not yet been ascertained. Of the twenty-six coals in the section only two are unwork- able to profit, from their thinness being only six inches thick. The thinnest coal reckoned workable is one of 18 inches thick. Hepce, if the thickness of all the workable coals ascertained in the Dalkeith district be added together, they amount to the un- common thickness of 109 feet 6 inches ; viz. Coal in the section, - - 82 Flat coals ascertained, - - 27 6 Total, '. 109 6 120 Mr Bald mi the Coal-field This exhibits a body of workable coal altogether uncommon, and is of the highest importance and value to the capital of Scotland for affording a supply of coal for many generations. It is, however, particularly to be remarked, that this astonishing thickness of coal is found not to extend the whole length of the basin, from the sea at Fisherrow to its western extremity at Magbie Hill and Carlops : the coals continue only to the great road leading from Edinburgh to Dalkeith at Sheriff-hall, where there is a dislocation, which throws the coal strata up to the west; and has the effect of throwing off all the valuable flat coals, as they are not to be found westward of that line ; and it appears that the flat coals found at Eldin, Polton, Dalhousie, and Whitehill collieries, are part of the edge-coals rendered flat by the slip or dislocation. This coal-field extends to the south side of the Roman-camp Hill near Dalkeith, and takes a reverse dip to the south ; then deflects, and rises again to the south near the village of Ford. I have now to make the following remarks on this coal-field and sections. All the coals are of the common bituminous kind, partly splint and partly cubical coal. The strata betwixt the coals are Various shades of yellow, white, grey, and bluish coloured sandstone, argillaceous schistus, bitu- minous shale, argillaceous earth, named Fire-clay, and a little coarse clay limestone in some places. All the coals are of open burning quality : — no caking coals have ever been found. The coals lie, in general, at the common distances from each other, as in other coal-fields, with this remarkable exception, that betwixt the coal marked No. 34. in the section, and the next coal under it, marked No. 75., the distance is no less than 90 fathoms, or 540 feet, in which space there is no coal. I know of no such thickness of strata in a coal-field without a coal being found ; and it is a fact of great importance in the searching of a district for coal. There are no beds of greenstone found in the strata hitherto explored, although there are several vertical dikes or veins of this rock, which intersect the strata seen in the Port-Seaton dis- trict along the shore. in the vicinity of Dalkeith. 121 There is very little ironstone found in the strata, less than in any other Scotch coal-field ; so much so, that none has been got for the purpose of making iron in the district now treated of. Bands and balls of good ironstone have been found, and a little wrought, at the verge of the coal-field near Abcrlady and Goss- ford, on the estate of Lord Wemyss. Lastly, it is a remarkable fact, that no inflammable air has been found in any of the mines of this district, however deep, though found in abundance in the coal mines in the counties of Stirling, Lanark, Renfrew, and Ayr. The Lothian mines, being free from this most destructive pestilence, is a great comfort, and no common blessing to the miners. Carbonic acid gas is fre- quently found, but happily few misfortunes arise from it. As the carburetted hydrogen is certainly produced from the coal, we might have expected it in the Lothian coal-field, which affords parrot or cannel coal of the best quality for producing the greatest quantity of gas, as each pound of this coal produces from 4 to 5 cubic feet of gas. With regard to the depth of the coal strata of this coalfield^ in which the beds of coal and organic remains are found, I am of opinion, that in the deepest part of the basin it will extend to at least 500 fathoms or 3000 feet, which shews how very deep the valleys have probably once been ; and the more so, if the theory of the mountains having been at one period much higher than they now are, is taken into account. In an economical point of view, relating to the quantity of coal in Great Britain, upon which the numerous manufactories and population depend for fuel, — 'it is frequently asked, Will not the coals in the kingdom be soon exhausted ? That they are rapidly exhausting, is evident to any one of the least obser- vation, particularly from the increased depth of the coal-pits ; and it being estimated that more coal has been wrought during the last hundred years, since the general application of the steam-engine, in working the mines, and at manufactories, than was wrought and used for the 500 years preceding, when coals first began to be commonly used for domestic purposes. Never- theless, great as the consumption is, and greatly as this has been increased during these last twenty years, still the quantity of coals remaining to be wrought is uncommonly great, so that the 122 Mr Bald on the CoaUJield in the vkinity of Dalkeith. period when it will be exhausted is yet very remote, and not easily calculated. In confirmation of which, I have to state, that, from investigations lately made, as to the quantity of work- able coal in the estate of Newbattle, near Dalkeith, the proper- ty of the Marquis of Lothian, there is in it alone as much coal as would serve the city of Edinburgh, at the rate of 350,000 tons yearly, for the long period of 500 years. This statement I made from practical data and measurements, and it gives a very wonderful view of the aggregate quantity of coal in the Mid-Lothian basin. In this estimate many of the coals calcu- lated are at a great depth, much greater than any coals have yet been wrought. There is, however, no doubt that the abso- lute necessity of having a supply of coals, the progressive im- provement of the steam-engine, and of mining, will induce min- ers to adventure much deeper than the state of the coal-mines and present prices lead them to contemplate. There are yet no coal-mines working in Scotland above eighty fathoms deep ; but in the vicinity of Newcastle coals are now working at the depth of 200 fathoms ; and the engineers now contemplate going much deeper, and that is to be expected, according to the progressive improvement in mining. Not thirty years ago, in working the Newcastle coals, from a fourth to a third of the whole coal was lost in pillars ; where- as at present in the best regulated mines, only about an eighth part of the whole bed of coal is left underground. This shews, in a strong point of view, how coal-fields may, within a certain limited area, produce much more coals than formerly from the same space, — simply by the improved system of conducting coal- mines, and that under a cover of rock 200 fathoms in thickness. From this we may conclude, that the capital of Scotland is not likely to be in want of fuel for a very long succession of years; for, besides having the Lothian Coal-field, the Union Canal connects it with the Western Coal-fields ; and the port of Leith connects with it the Fife, Stirling, and Clackmannanshire Collieries, and also those of the north of England. ( 123 ) On the Covering of Birds, considered chicjly with reference to the Descrijition and Distinction of Species, Genera and Or' ders. By Mr W. Macgillivhay, M. W. S., &c. Continued from former Number, p. 263. -T EATHKRS, considered witli regard to their uses, may be dis- tinguished into two kinds. Those which are more especially employed as the medium of locomotion, are much stronger, more compact, and more elongated than the others. Of this kind is the row of feathers bordering the wing behind, and that terminating the rump or tail. The names of quills, penna, pennes, ought to be applied to these alike, although it is usually confined to the former. The feathers which lie immediately over the wing-quills, on both sides of the wing, partake in this respect of the nature of the quills themselves ; but those which lie over the tail-quills are seldom, if ever, of so dense a texture. The rest of the feathers are not, in this most general sense, distin- guished by any particular name in our language, although, by ornithologists who write in Latin, they are termed plurncB, and by the French plumes. The word plume, however, being with us the poetical name for a feather, or being used to designate such feathers as are applied to the decoration of hearses and heads, it cannot well be proposed as an ornithological term. It has been mentioned that the accessory feather is always downy, excepting in those birds in which its developement is equal to that of the feather itself. It has also been remarked, that the part of the webs nearest the tube is always of a looser texture than the rest. In the feathers of many birds, the downy part occupies by far the greater portion ; in some it is merely the tip that is compact, while in others the loose part is limited to a very small extent, and in others scarcely exists. As an example of feathers all downy, may be mentioned the subcaudal feathers of Pavo cristatus, and the abdominal feathers of Strix bubo, and owls in general. The abdominal feathers of Falco albicilla, and eagles in general, are nearly all of this loose texture. The gal- linaceous birds have a very large proportion of down upon their feathers, and the Columba? are the same in this respect. Of such as have very Uttle down of this kind, may be mentioned 124 Mr W. Macgillivray on the Covering of' Birds. the different species of Aptenodytes. The crest feathers of Pa- vo japonicus are almost destitute of these soft barbs at the base ; and this is, in general, the case with all those elongated feathers which, by the French, are termed Plumes de luxe, on whatever part of the body they grow. In quills, there is, in general, scarcely any downy part. In the downy barb, the filament is nearly equal in all its diameters, and is extremely attenuated. The barbules are also elongated, in many of the gallinaceous birds, for example, being twenty times the length of the bar- bules of the apicial part of the feather. These barbules are, in all cases, biserial, like the others, but very frequently they as- sume a direction the reverse of these, coming off from the fila- ment, not in the plane of the web, but at right angles to it, or, in other words, from the face and back of the web, so as to pre- sent on these surfaces a layer of minute silky filaments. This arrangement is especially remarkable in the gallinaceae. Fre- quently the filament becomes spirally twisted ; in which case the barbs seem to have a circular arrangement, although they are still biserial. With respect to relative magnitude, the following is an ac- count of the ordinary distribution of feathers in birds. From the head, backwards to the tail, they increase in length and size ; those on the face, or around the base of the beak, being smallest, the tail-coverts longest. The wing-feathers are much shorter than those of the body, and also increase backwards. Those of the upper or dorsal half of the body are almost always shorter than those of the under or abdominal ; and the dispro- portion seems to have reference to the degree of obliquity of the body in its ordinary posture ; for, in those birds which have a nearly vertical position, such as penguins, auks, guillemots, the feathers of the under surface are scarcely longer than those of the upper. The feathers of the upper parts are also more com- pact than those of the lower. There is at least as great a difference as to size among fea- thers, as there is among the hairs of [quadrupeds. The margi- nirostral feather of Trochilus moschitus is about one-sixteenth of an inch, while the middle caudal feathers of the Argus are three feet in length. In the same bird, also, the disproportion is of- ten extremely great. For example, the frontal feathers of Pavo Mr W. Macgillivray on the Covering of Birds. 125 cristatus are not more than a quarter of an inch in length, while some of the posterior dorsal exceed two feet. Even in the same part of two species of the same genus, the greatest difference is often observable in this respect. Compare, ibr example, the scapulars of Ardea cinerea and Ardea garzetta. Besides the feathers properly so called, there enters into the constitution of the plumage or general envelope, another modifi- cation of the same general nature. On removing the whole of the feathers whose tips appear externally, in certain orders, and especially in the aquatic birds, we find the skin still covered with a more or less dense envelope of a very soft, filamentous, highly flexible, and very elastic substance. This is the down^ tomenturriy diivef. It also consists of individual parts, for which we have no general name in our language, nor indeed in any other that I am acquainted with. The name which seems most applicable to this sort of feather is plumule. A plumule, plumula, plumule, consists of two parts ; a small tube, less perfect in form and texture than in the feather, being very narrow, soft, and not well defined in its lower or proximal part, and having its walls composed rather of soft scales than of one continuous piece ; and a pencil of filaments issuing from the base of this tube internally, without any connecting shaft. These filaments vary in length and number, according to the spe- cies. In all cases they are extremely slender, pliant, sinuous, and more or less spirally twisted. They consist of an extreme- ly delicate shaft, along the sides of which there come off, in ge- neral, two sets of short delicate filaments. The former may be denominated the filaments, the latter the filamentules, corres- ponding to the barbs and barbules of the feather. These fila- mentules have the same relation to the filament, their shaft, that the barbules of the feathers have to their barb, and are, in ge- neral, equally distichous ; but they enter into no connection, re- maining perfectly loose, and, owing to the manner in which the shafts are twisted, have the appearance of coming off all round them. The general arrangement, as has been observed, is in two rows ; in the down of Sula alba it is in three, one row con- sisting of filamentules somewhat shorter than the others, and di- rected toward the end of the filament. The filamentules of 126 Mr W. Macgillivray on the Covering of Birds. the plumules, unlike the barbules of the feather, come off in ge- neral at right angles to the filaments. The uses of the down are not well understood. As it is well known, however, to be a bad conductor of caloric, it i-s presum- ed that it serves in the aquatic birds, and particularly in those of cold climates, ""to retain the heat generated in their bodies. In birds which are not furnished with down, but which yet in- habit cold countries, the deficiency might be supposed to be sup- phed by the downy feathers which we observe in these birds, as in Strix bubo, Strix nyctea, Falco albicilla, and Falco chrysaetos. In the gallinaceous birds, the accessory feather might, in like manner, be imagined to be subservient to this purpose. But when we reflect that the eagles, owls, and gallinaceous birds of cold climates, are at least not much better furnished with down or downy feathers than species of the same genera inhabiting warm climates, we naturally look for some other reason for which birds are furnished with down ; and. when we observe that the Alca impennis of the arctic seas is not more plentifully supplied with plumage than the penguins of the pacific ocean, nor the Sturnus vulgaris of Europe than the Sturnus capensis of Africa, we suspect that other principles than heat have been employed in modifying the nature and quantity of the plumage. In the gallinaceous birds, the omnivorous, and many others, in fact, in land birds in general, there is no general layer of down immediately covering the skin. In the genus Falco, and many others, and especially in the larger species, F. albicilla, for example, F. chrysaetos, and F. perevinds. There is seldom any thunder at this season ; nor does the summer temperature scarcely ever rise so high as to be oppressive. Frequently the wet weather continues with intervals till September, from which period to the middle of October the weather is generally fine. As the winter advances the westerly gales become more boiste- rous and continued, and, in this season, there is frequently a good deal of thunder. One of the finest thunder blasts I ever met with occurred at Harris in December of 1820, at midnight, during a very hard gale of westerly winds. The lakes seldom freeze in winter ; and, although the hills are often tipped with snow, it is seldom that a general covering takes place. After continued westerly and northerly gales, enormous billows roll in from the Atlantic, dashing upon the rocky shores with astonish- ing violence ; I have seen the spray driven over rocks a hundred feet in height, to a great distance inland. Even in summer the spray is sometimes carried inland, so as to injure the vegetation ; and I have known a farmer, who had injudiciously planted his potatoes too near the shore, lose his whole crop, in one night, from such a cause. A winter in the Outer Hebrides is dreary in the extreme. Tempests and gloom alternate, with days of sunshine, and sometimes of calm, when the hollow roar of the breakers, occasionally interrupted by the shrill scream of the wandering sea-bird, inspires a melancholy, unfelt during the rage of the tempest. ^ There is not a grander spectacle than that which the great ocean presents at this season, boiling and foam- ing as far as the eye can reach, rolling its long and widely se- parated billows into the sounds, and breaking upon the head- lands with inconceivable fury, shaking the solid rocks to their foundations ; while, along the surface, sweeps the western blast, scattering the broken summits of the waves into spray, and athwart the threatening sky are driven, in confusion, enormous masses of black clouds, charged with electrical matter, and pouring forth nun, sleet and hail. So violent are the winter tempests, that the huts are frequently unthatched, sometimes unroofed ; boats have been raised into the air, and shivered to pieces, and cattle car- ried off their legs. In those sudden blasts, one has sometimes k2 148 Acccmnt of Harris. to fall flat, on hearing it approach, and cling to the ground. But, if there be much gloom, there are also glimpses of sunshine. And he who, from the summit of CHsheim, can view the long range of islands laid out at his feet, sending up their thousand thin streams of white smoke from the kelp-kilns ; and, turning toward the east, behold the mountains of Skye, and, beyond them, of the mainland from Knoydart to Cape Wrath, like the unconquerable barrier of some enchanted land, with the smooth waters of the Minch flowing between ; or, directing his view to the west, see the magnificent ocean, glowing with the splendour of the setting sun, and the lofty isles of St Kilda rearing their giant heads afar, — can look and not be moved to extasy, is of a more leaden temperament than is commonly to be met with. In the short nights of summer, the sweet and melancholy song of the throstle has scarcely ceased on the hill-side, when the merry carrbl of the lark, couched among the soft herbage, commences, and the snipe and curlew sound their shrill notes. To enliven the long nights of winter, the northern heavens are sometimes illumined by the polar lights. At one time, a great arch, of a white and cloudy aspect, stretches from east to west ; at another, flashes of pale light emanate from the pole to vanish in the ze- nith, sometimes a thousand streamlets spread over the starry sky, ever changing with inconceivable rapidity ; armies, as it were, are seen encountering in the heavens ; and I have been gravely told by the natives, that, after such exhibitions, the moss on the moors has been seen tinged with red from the blood that has fallen during the conflict *. Again, how delightful a mid- night walk by moonlight on the lone sea-beach of some secluded isle, the glassy sea sending, from its surface, a long stream of dazzling light, no sound, save the small ripple of the wavelet, or the scream of a sea-mew watching the fry which swarms along the shores. Even in this desolate land there is beauty ; and even here might man be happy, did not selfishness mar the bounty of providence -f-. * Tufts of Sphagnum obtusifolium on the moors are frequently of a bright red colour, which the natives attribute to the cause mentioned. -|- The effects of mirage, as exhibited among the islands, are often extreme- ly striking ; but, as they are well known, it is unnecessary to describe them here. I shall only remark, that this phenomenon is best seen the nearer the Geology. 149 Geology. — Gneiss is the predominating rock in Harris. All the inhabited islands consist of it. In the Forest there are nu- merous beds and irregular masses of hornblende rock, horn- blende mixed with black mica, and scaly mica. At Marig, on Loch Seaforth, there is a deposit of hypersthene rock, ofconsi- derable extent ; and in the island of Scalpay, close to the light- house, a bed of serpentine and potstone, with veins of green talc and 'flexible asbestus. The northern part of the second division is gneiss, the greater part of the middle portion granite, and the southern part chiefly gneiss, with masses of syenite and garnet rock. At the junction of the granite with the gneiss, along the north side of Loch Langavat, there commences between Finsbay and the eastern extremity of that lake, an irregu- lar bed of indurated talc, with talc slate and asbestous ac- tynolite. Close to the eastern extremity of the lake, it forms a considerable eminence named Scaire-ruadh, and, proceed- ing westwards, appears, at long intervals, in the form of great nodular masses, and terminates in the Dun of Borg, near the west coast. It contains immense quantities of acty no- lite of several varieties, hornblende, rigid asbestus, and dark- green mica. The varieties of the gneiss ai'e endless. The prin- cipal minerals which enter into its constitution are quartz, fel- spar, hornblende, mica, and garnet. The most beautiful kinds are those which contain garnets, of which fine examples are seen in the Glen of Rodill, in the Corry of Ronaval, at Big Scarista, and in Ben-Capval. In the northern part of the latter mountain, a variety of garnet, much resembling cinnamon-stone, forms a principal ingredient in the rock. The most remarkable geological appearances are those presented by the veins, which are of two kinds, greenstone and granite. Of the former, the finest is a great vein, running from Shelibost, near the sand of Loskentir, to the observer is to the level of the sea, and in calm weather with sunshine, when a sort of exhalation is expanded over the surface, in which rapid and minute motions are presented, very much resembling the appearance produced when .a quantity of alcohol is poured into water. The mirage is common on the sands of the west coast, where it always presents the appearance of water, ami, by distorting and amplifying the sand-banks, rocks, sea-birds, and other bodies, produces fairy landscapes, in which lakes, trees, ruins, and £mtastic dwellings, are mingled in strange disorder. 150 Account of Harris. east coast. It is about thirty feet thick, and in general rises seve- ral feet above the surface, presenting the appearance of an cnox- mous wall, and in some places of the ruins of castles. Unlike most of the 'others, it is very large grained. Of the granite veins, the largest is that which runs across the face of Ben- Capval, over an extent of a mile and a-hal£ There are others of the same kind in Ronaval, in Taransay, and in many other places. The ingredients are ctf large size, and consist of red or white felspar, quartz of various colours, sometimes granular, and mica in large plates *. The simple minerals which I have observed in the country are the following. Quartz of various colours, grey, white, brown, milky, and pale -rose. Fel- spar, generally flesh-coloured in the granite veins, and whitish in the gneiss. Moonstone, in granite veins opposite the rock of Stromay. Mica, grey, brown, dark-green, black, in plates of upwards of nine in- ches, also scaly. Garnet, of numberless varieties, and of all sizes from four inches downwards. Cinnamonstone. Hornblende, in the gneiss, also as hornblende rock, and crystallised. Hypersthene, at Marig. Common and asbestous Actynolite. Flexible and rigid asbestus in im- mense quantities -j-. Talc, common green. Indurated Talc. Potstone. Limestone. Sahlite and Coccolite in the limestone at Rodill. Beryl^ white, opaque, in the granite vein of Ben-Capval. Zeolite, in the trap veins. Calcedony, in small specks in the trap. veins. Clay, of a light green colour, chiefly on the declivities, seldom of great depth, and com- monly mixed with fragments of gneiss. Porcelain earth, forming a de- posit under peat, as well as the bottom of a lake, between Ilodill and Finsbay, and which the inhabitants of the village of Ilodill, now depo- pulated, formerly used for white-washing their huts. Bog-iron-ore, dark -brown, compact, with vesicular cavities, in considerable abundance, in many parts of the Forest, and southern division. Titanitic iron-ore, in granite veins. Iron-pyrites. Zircon, discovered by Mr Nicol ; see for- mer Number of this Journal. Peat and sand form the principal ingredients of the soil of Harris. The upper parts of most of the mountains are covered • It is remarkable of these veins, that the trap ones generally present distinct lateral surfaces, while the granitic, in all cases that I have examined, pass by a rapid transition into the bounding gneiss rock. -)• Dr MacCuUoch mentions the occurrence of asbestos at Nishishee (Inis- rith, pronounced Inishshee), which he conjectures to have been derived from a bed of serpentine. At Inishshee I found neither asbestos nor serpentine ; but of the former I have seen enough in the country to load an Indiaman. It occurs in a large perfectly isolated mass in granite in the hills of Little Borg, Geology, 1 51 with fragments of gneiss, and their lower parts with peat, upon a subsoil of clay or angular gravel. The valleys, where the rock does not occupy the surface, are covered with peat, com- monly thin ; but, in some places, where the surface is pretty level, from three to eight feet deep. There are no extensive tracts of flat peat. It is not necessary to describe the numerous varieties of this substance that occur in Harris ; and I shall on- ly mention that some of them are very little inferior to coal as fuel. In a few places, such as the Glen of llodill, part of the farm of Strond, and part of Ob, the soil is gravelly, with a mix- ture of vegetable mould and clay. The sand of the west coast consists entirely of comminuted shells. Fragments of mytih, myae, venuses, mactrae, and other common shells, are easily dis- tinguisliable in it ; and the shells of Patella vulgata and Cardium cdule occur even to a great distance from the shores, in a scarce- ly altered state. This calcareous or shelly sand varies conside- rably in fineness ; that near the sea is in general the coarsest. By the attrition which its particles undergo in blowy weather, it is sometimes, and especially in the spring season, reduced to a very fine powder ; and from the west side of the island of Ber- neray, and the east side of Pabbay, may often be seen carried out several miles to sea, in the form of a dense white mist. I have already mentioned the two large flats formed by this sand on the west coast. In other places it is heaped into banks, sometimes upwards of twenty feet in height ; and wherever it abounds, it is mixed by drifting with the peat or earthy soil im- mediately behind it, producing excellent pasture ground. Population, — According to the census of 1821, the population of Harris was 3909. As in most of the other Hebrides, it is entirely maritime, there being scarcely a hut in the country 500 yards distant from the shore. The inhabitants exhibit conside- iu a small eminence on the farm of Middle Borg, in a vein near the houses at Big Borg, ill the Dun of Borg; and from thence to the east side of the coun. try, ill a dozen different localities, in tlie irregular deposit, of which Scaire- rUadh forms the most remarkable point. I mention these localities as being all in connection ; but it occurs moreover in many others. As to sei-pentine, I ha\re never seen any in Harris, excepting the bed in the island of Scalpay. 15SI Account of Harris. table diversity in their appearance. In general they are of small stature ; those individuals who are considered by them as exceed- ing the ordinary size, dnd accordingly designated by the epithet Mor, or Big, seldom exceeding 5 feet 10 inches in height. Scarcely any attain the height of 6 feet ; and many of the males are not higher than 5 feet 3 or 4 inches. They are in general robust, seldom, however, in any degree corpulent, and as sel- dom exhibiting the attenuated and pithless frame so common in large, and especially in manufacturing towns. The women are proportionally shorter, and more robust, than the men. There is nothing very peculiar in the Harrisian physiognomy ; the cheek-bones are rather prominent, and the nose is invariably short ; the space between it and the chin being disproportionate- ly long. The complexion is of all tints. Many individuals are as dark as mulattoes, while others are nearly as fair as Danes. In so far as I have been able to observe, the dark race is supe- rior to the fair in stature and strength. It is scarcely possible to conceive a constitution more callous to all sorts of vicissitudes and hardships, than that of the He- bridians in general. A^native of Harris thinks nothing of labour- ing in a cold and boisterous spring-day with his spade, up to the ankles in water, and drenched with rain and sleet. Nor is there to be found a race more patient under privation. A small quantity of coarse oatmeal and cold water will suffice to support him under fatigues that would knock up a pampered English- man or Lowlander. In respect to intellect, they are acute, ac- curate observers of natural phenomena, quick of apprehension, and fluent in speech. In their moral character, they are at least much superior to the population of most of the lowland parishes. Murder and robbery are never heard of among them ; and if petty theft be sometimes practised, it is by no means com- mon. They are of an obliging disposition, hospitable in the highest degree, charitable to their poor. The spirit of inde- pendence, however, which characterizes the Englishman, is un- known among them, and, accordingly, their respect for their superiors degenerates into servility. They are, in general, not a little addicted to flattery and scandal. In their quarrels they are profuse in abusive epithets ; but it is seldom that they come Population, 15B to blows, even at their luncrals or other merry-makings. They are rather Uvely than grave, and express their feeUngs and emo- tions, whether of joy or of grief, in a more obvious manner than would seem becoming in other parts of the land. Although kind to passing strangers, they dislike those who settle among them. Secluded, as it were, from the world, and ignorant alike of the aiFairs of other nations and of their own interests and rela- tions, they have no participation in the political feelings which agitate the other parts of the empire. This seclusion and igno- rance may also account in some degree for their extreme attach- ment to their country. I have yet one concluding trait in their character to mention. Old age has been treated with sympathy and respect by nations even the most savage ; here it is rather an object of ridicule and contempt. It is melancholy to think of the last years of the poor peasant of the Hebrides, banished to a miserable hovel, excluded from the society even of his own children, — subjected to privation when nature can least bear it, — without the vigour of body or of mind, the buoyancy of spirit and the elevation of hope that supported him in the days of his youth, — without the complacency which respect and defer- ence are so adapted to excite, — and I am afraid, too often, with- out the friendly advice and benevolent care of him who ought to prepare his mind for the change which he is soon to make. Formerly the population consisted of two distinct classes, the tacksmen or great farmers, and the common people. The rela- tions of these classes to each other being generally known, it is unnecessary to say any thing on the subject. At present the class of tacksmen is much reduced, and the system of subsetting land has been done away with. The present race of upper far- mers, compared with the former, is degenerate, and there are few among them who can boast of those accomplishments which distinguished their ancestors. " It will perhaps,"''' says Dr Mac- leod in his rejx>rt (Stat. Rep. vol. x. p. 367), " excite the won- der of posterity to know, that the whole landed possession of Harris, was, down to the year 179 v, excepting four small-tenant farms holding immediately of the proprietor, in the hands of eight gentlemen farmers, on whom all the other inhabitants de- pend ; and that this distribution is so unequally proportioned, that two great farms comprehend more than one half of the es< 1 154 On the Discovery of Native Iron^ tate. The principal tacksmen,"" he continues, " live here like gentlemen ; they are, for the most part, men of liberal educa- tion, and polite breeding.*" As I have just observed, things are different now ; and of the resident tacksmen, there assuredly is not one possessed of a liberal education, whatever he may fancy himself to be as lo polite breeding. (To be continued.) On the Discovery of Native Irmi in Canaan, Connecticut, North America. We are informed by Mr William Burrali, in a letter, dated 16tli August 1826, that his father was surveying a piece of land on the mountains, about three years since, and by accident noti- ced a black vein in a t[uartz rock ; he pounded upon it some time with a stone, and with considerable difficulty got out two small pieces, the largest of which is in our possession. He has never been at the place since ; and probably no other person has ever discovered it, or knows where it is. It is surrounded by woods one or two miles on every side, and is on the top of a mountain 700 or 800 feet above the common average of the land in the town. Mr Burrali says, there is evidence in that quarter of masses of iron, or its ores, of considerable extent, as his compass was materially affected ; but the particular vein from which he obtained the pieces appeared to be of no great extent ; and the width of it is the same as that of the piece in our possession, which measures two inches wide, and two thick. It weighs eight ounces. The following notice of the same facts has been received from Mr C. A. Lee. " Native Iron on Canaan Mountain, a mile and a half from the South Meeting-house. — This is particularly interesting, as it is the first instance in which native iron, not metcoric_, has been found in America. It was discovered by Major Burrali of Ca- naan, while employed in surveying, several years ago. It formed a thin stratum or j)late, in a mass of mica-slate, which seemed to have been broken from an adjoining ledge. It presents the On the Discovery of Native Iron. 155 usual characters of native iron, and is easily malleable. For some distance around the place where it was found, the needle will not traverse, and a great proportion of the tallest trees have been struck with lightning. Whether these phenomena are con- nected with the existence of a large mass of native iron, as yet undiscovered, I leave for others to determine ; the facts, how- ever, may be relied on.*" " Physical and Chemical Properties of the Native Iron of Canaan^ ascertained in the Laboratory of Yale College, by Mr C. U. Shepard, at the request of the editor. — In its first appearance to the eye, the native iron of Canaan resembles highly crystalline plumbago ; being every where invested with a thin coating of this mineral, which complet^y defends it from oxidation. Its structure is visibly crystalline, separating with considerable readiness into pyramidal masses, and more usually into oblique tetrahedra. This cleavage, however, never takes place without the intervention of thin scales of plumbago. It falls considerably short of meteoric iron in malleability, toughness, and flexibility ; as well as in the silvery whiteness of its lustre, which, in part, is no doubt due to the plumbago dif- fused through it. In hardness and magnetic properties it does not differ perceptibly from pure iron. Its specific gravity varies from 5.95 to 6.72. " Intermingled with it occasionally is native steel. One an- gular fragment, weighing about eight grains, was perfectly brittle, sufficiently hard to scratch glass, and possessed of the characteristic granular structure, and silvery white colour of steel. With the microscope no scales of plumbago were notice- able in it. Dissolved in dilute nitric acid, it afforded an evident quantity of black, carbonaceous matter, upon the surface of the solution. " A fragment of the native iron, weighirjg 100 grains, was dissolved in dilute nitro-muriatic acid. The plumbago attached to it being left behind, was separated, and found to weigh six grains. To the solution was added, in excess, perfectly caustic liquid ammonia, by means of which the iron was thrown down. The ammoniacal solution was then examined for lead, copper, or any other metal which might be present, by adding to it 156 Oil the Discovery of Native Iron, hydrosulphuret of ammonia. No precipitate, nor change of co* lour, was produced, though suffered to" remain for several days ; which leads to the conclusion, that our mineral is unalloyed with any metal. In this respect, therefore, it differs from the native iron of Saxony, in which Klaproth found, lead 6.0, and copper 1.50. The iron being washed and heated, weighed 127 grains; which being in the state of a peroxide, according to Mr Children, indicated 88.90 metallic iron, or, according to Klaproth, 92.21 metallic iron. " To secure greater accuracy, the process was repeated with 50 grains of the mineral, from which were separated 3.50 grains plumbago. The iron was precipitated as before ; and after being heated, weighed 63 grains, which, according to Children, indi- cated 44.10 metallic iron, or by Klaproth's rule 45.90." " Remarks by the Editor. — There can be no question that the native iron above described is a genuine production of the earth, and that it holds no connection with meteoric iron. The mass bears the marks of a true metallic vein ; it has smooth sides, and small specks of blue and white quartz are sticking in it. Nickel, constantly found in the meteoric irons, is absent from this specimen ; and if it. were a question whether native iron be a true production of mines, this discovery decides it."" — Silli- mati's Journal^ 1 827. General Observations in Natural History, made during a Jour- ney among the Blue Mountains in New South Wales. By M. R. P. Lesson. Xn this short itinerai'y, we only propose to give a summary account of the animal productions which are peculiar to the climate of New South Wales, a country so fertile in interesting species, and so rich in animals still little known. The short stay which we made at Port Jackson, does not permit us to en- ter into extensive details on this subject, and we can only add some gleanings to what has already been observed by preced- ing travellers. The English, who have established a splendid colony in this part of the globe, are excellently situated for Bhie Mountains in New South Wales. 157 exploring the country with complete success, and leaving no- thing to be desired with respect to it by the naturalists of Europe. We do not find, however, that they have as yet taken due advantage of their excellent opportunities ; and if we ex- cept the works of Shaw * and Lewinf, both of considerable merit, no particular work has made known in detail the natural riches of a country still almost unknown, especially in its inte- rior. We have much to hope from Mr Macleay, who has re- ceived an appointment there J, and we have reason to regret the departure of the last governor, General Brisbane, who did all in his power to facilitate the pursuits of naturalists, and who treated us with a benevolence for wliich it affords us pleasure to testify our highest gratitude. The investigations, which have had for their object to elucidate the zoology of New Holland, are contained in our classical works and scientific collections ; and every body knows the important researches of Messrs Cu- vier, Geoffroy St Hilaire, De Blainville, Labillardiere, Peron, Lesueur, Quoy, and Gaimard, in France ; of Messrs Banks, White, Phillip, Latham, Knox, Home, Vigors, and Swainson, in England ; Blumenbach in Germany ; and Temminck in Holland. In this itinerary we shall follow the order of- our encamp- ments, and of our progress across the Blue Mountains. But before proceeding farther, we must make a remark or two re- garding the manner in which this barrier has been broken, a barrier rendered famous by what Peron has related of it, and by the attempts which several Englishmen made to surmount it, and especially the celebrated Bass. The year 1813 was very dry ; the springs disappeared, the grass was burnt up, and the cattle perished for want of food. Messrs Law son, Blaxland, and Went worth determined to at- tempt the passage of the Blue Mountains, in search of fresher pastures, in order to repair the disasters of the year. They • Shaw (George), Zoology of New Holland, Lond. 1794. 8vo. •f The Birds of New South Wales, by John Lewin, 4to. 26 plates. There is also a work by the same author on the Lepidoptera of New South Wales. 1 vol. 4 to. X Named this year secretary-general of New South Wales, the most im- portant office next to that of governor. 158 M. Lesson on the Natural Histoi^y of the crossed the Nepean at Emeu-ford, and ascended the first plain of the Blue Mountains with ease. They then got embarrassed among numerous detours, and were on the point of renouncing their project. But at length their obstinate perseverance was crowned with success, and after having descended York Moun- tain, they discovered a rich and fertile country, and returned to Fort- Jackson, to announce this important discovery. I have always been astonished at the difficulties which those who first attempted to cross these mountains have said they had under- gone ; for their height, at the highest summit, is not more than about 2500 feet, and the two ranges which they form are con- nected by undulations of no great importance, and could scarcely present any obstacle at York Mountain for descending into Clyde Valley. We must suppose that all those who tried the enterprise in the earlier times of the colony, had coasted the rugged and steep sides of the Prince Regenfs Glen, which is a deep valley, the vertical walls of which must naturally have pre- sented insurmountable obstacles, although at a short distance it was easy to pass over the sloping declivities which connect the various divisions of the first range of the Blue Mountains. Having provided ourselves with a cart and guides, M. Dur- ville and I set out on the 29th January 1824. I shall not de- scribe Sydney, Paramatta, or the farm of Emeu Plains, which is boimded by the Nepean, and now abundantly covered by the cereal productions of Europe. This rich and beautiful plain is situated at the foot of the Blue Mountains, twenty miles dis- tant from Sydney Cove. The rock is uniformly ferruginous sand- stone, excepting the Prospect Hill, where the curious phenome- non is observed of a high eminence, consisting entirely of dole- rite^ the foot of which is enveloped in sandstone, which is every- where uniformly of the same nature. In the fresh and running- waters of the Nepean, I found a very small Cyclas^ together with a species of Unio. A small Teal, allied to, or perhaps even identical with, the Soiicronette, lives in flocks upon this river, which is no longer inhabited by the Ornithorynchi, or at least in such small number, that it is very rare to have any in this loca- lity. ' To supply this want, however, the yellow-crested Cockatoos, (Psittacus cristatus of Latham), made the wood resound with Blue Mountains in Nezo South Wales. 159 their cries, pcrcliecl on the trees, in the holes or chinks of which they nestle. In this place I had to regret my not being able to kill the singular bird, commonly named at Sydney the Coachman's Whip, because its cry, which I liave often heard, resembles exactly the smack of a whip. Is this bird a Philedon, and has it been described ? The purple Choucari, the SatiiuUrd (Gra- culus), equally prefers the high Casuarinae, which border tlie Nepean, at its exit from the Blue Mountains. On the 31st we began to ascend the first range. The road, as far as Spiifigwood, is a gentle acclivity, and the whole face of the mountains and the ravines, by which they are divided, is covered with forests of Eucali/pti and Casuarinae. The Mimosa taxifolia, a new species of Cunningham**s, was in flower, and exhaled the most agreeable odour among bushes of Lam- hertia speciosa and Protea. It is here that the Menura {Me- nura magnifica ; M, Novas Hollandiee of Latham), is chiefly found, the tail of which, remarkable for its great beauty, pre- sents, in the solitudes of Australia, an exact patterii of the har- monious lyre of the Greeks. This bird, to which the name of Wood Pheasant IS giYQw by theEnglishof Port Jackson, frequents the rocky and retired districts ; it comes forth in the evening and morning, and remains quiet during the day upon the tree, wliere it is perched. It is becoming every day rarer, and I only saw two skins that had been preserved by Mr Lawson, during the whole period of my stay in New South Wales. We arrived in the evening at the Swamp, an extensive marsli, where we put up our tent. We observed in this place a great number of crows (Corviis corane, Lin.), the species of which does not seem to differ in any respect from that of Europe : a small goatsucker, witli very prettily marked plumage (Capri. midguts NovcB Hollandiee), and the banded skink {Scincus nu gro-luteiis of Quoy and Gaimard*). The heat during the day was very great, and a thick fog spread itself over the moun- tains, on the approach of night, which was very cold. The change of temperaturejs extremely rapid in these countries. On the 1st of February we crossed the chain, which at its most elevated point is named King's Table Land. Its height is • The Lacerta pfatura of White is very rare here. 160 M. Lesson on the Natural History of the 2727 English feet *. The sandstone is nearly exposed in all parts ; the vegetation is patched, and consists of some species of CasuariruE and Eucalypti^ and it is here that the pretty Pater- sonia glahrata of Brown grows in the greatest abundance. Not far from King's Table we discovered a rich valley, inclo- sed by vertical walls, 676 English feet high, formed of regular strata of sandstone. It was the Prince Regenfs Glen. From the place, named Pitt's Amphitheatre, the view extends to a great distance over the various undulations of the chain of the Blue Mountains. Torrents of smoke rose from various parts of the woods, which, from the negligence of the savages, are very often set on fire. On our way to Blackheath, I found in the middle of the heath, in a state of complete torpor, the Blaeh and Yellow SJcinJc of Port Jackson, figured in the geological atlas of Messrs Quoy and Gaimard, in Freycinet's Yoyage. What is remarkable is, that I found another individual in the same state some days af- terwards ; and that those which the naturalists of the Uranie brought witn them, were collected under similar circumstances. York Mountain, or Cox's Pass, is elevated 3292 feet above the level of the sea; and the path which it was necessary to make upon the steep side of this mountain, to descend into the charming valley of Clyde, is so rough, that although it has been made to describe several turnir«js with great labour, it is still a difficult point, and is frequently the occasion of accidents ; and carriages somewhat heavily loaded can only be got up the a<:clivity by means of hard straining. At York Mountain, sixty-two miles distant from Sydney, the sandstone formation, which is often ferruginous, containing hydrate of iron, which gives it its colour, together with iron glance, disseminated in shining scales, entirely ceases, and then commences the pri- mitive formation, which extends to Bathurst, consisting of quartziferous, granitic and syenitic rocks, which extends to Ba- thurst. These rocks alternate in the bed of Fish River, with a blackish .quartziferous petrosiliceous porphyry. The tops of the mountains near Cone's River, are covered with -a common stratified pegmatite -f*. * According to Mr Oxley's map. + All these specimens have been sent to the Museum, and examined br M. Cordier. Blue Mountains in New South Wales. 161 It is in York Mountain that the Echidna Hystrix of Cu- vier chiefly lives, which the English rear in a state of domesti- city, for the purpose of selling thcni at a very high rate to col- lectors. This animal, which in appearance approaches the hedgehog, has accordingly obtained that name among the colo- nists of New South Wales. It burrows, and does not willingly come out in dry weather ; it is therefore difficult to procure it during several months of the year. According to the accounts of it which I have received from the convicts who inhabit York Mountain, it lives upon insects and legumes, and chiefly on ants, which it gathers with its tongue, after the manner of the ant-eaters. It emits a small grunting sound when disturbed, and its manners, in a state of hberty, are but little known. I could obtain no further intelligence respecting it from the inha- bitants of the country. An Echidna, which I had procured, and which my colleague, M. Garnot, endeavoured to carry to Europe, gave him an opportunity of publishing an interesting note regarding the manners of this animal in a state of capti- vity *. This place, like all the neighbourhood of Port Jackson, and especially the country about Botany Bay, is infested with the black snake, the most formidable reptile of this country, and that whose poison acts with most celerity. A great number of serious accidents are mentioned as having been caused by the bite of this Acanthophis, which is distinguished by the shining black of the upper part of its body, and the agreeable rose-co- lour of the under part. We crossed Cox's River, formed by the junction of two small brooks, upon fallen rocks of a very beautiful granite. This river flows from east to west. I procured here the large and small flying phalangers, (^Petaurista taquanoldcs and P. sciurea of Desmarest). At York''s Bridge we killed several species of philedons : they live in flocks in the large eucalyptuses. We procured an undescribed species, as well as the Spotted Phih- don (Certhia Nova-IIollandia, Lath.) the white fronted Phik- dmh the Speckled Philedony and the Black-cap. {Certhia atri- capilluy Lath.) On the third of February we reached Fish Biver, where we encamped with the intention of killing ornithorynchuses. The • See the Annales ties Sciences Naturelles, for December 1825. OCTOBER DECEMBER 1827. L 162 M. Lesson on the Natural History of the long drought had very much diminished the depth of its waters. It was fordable in most places. The Omithori/nchi, which are called Water-Moles by the colonists, and Moujlengong by the natives, inhabit the banks of this river in considerable abun- dance, while they haye become very rare on those of the Ne- pean. They are still pretty numerous at the proper season in Campbell and Macquarrie Rivers, and at Newcastle. The specific name of paradoxus has been given to this singular ani- mal *, of which Shaw has made his genus Platypus, and Blu- menbach the genus Ornithm-ynchus. Its extraordinary forms seem to sanction this name. Dr Knox, when he announced to the Wernerian Society of Edinburgh, his beautiful disco- very of the crural gland, which communicates by a canal with the spur with which the hind feet are armed, was virulently attacked by a physician of Port Jackson, in the Sydney Ga- zette, The Australian doctor denied the existence of the gland and its duct, and supported his opinion by the con- sideration that there was no proof that a dangerous wound had ever been inflicted in the country. He asserted, that these spurs, of which the female individuals never have any, are in- tended for the purpose of assisting the males to lay hold of the females, and to keep them immoveable during the act of gene- ration. Subsequent observations have reduced these assertions to their true value. The colour of the fur of the ornithorynchus is ordinarily dark brown. Some varieties of age or sex that have been considered as species, are of a reddish colour. ' Mr Mur- doch, the superintendant of the farm of Emeu Plains, assured me that he had found ornithorynchus's eggs, and that they were of the size of those of a domestic fowl. After having waited for several hours in a state of perfect immobility, to see if any of these animals would make their ap- pearance, I left the banks of Fish River, and the small rocks on a level with the water, to which they resort on issuing from their holes. I was afterwards informed, that, at this season of the year (January and February), the ornithorynchus remains close in its burrow, and only appears at the time of the great • See Peron, "Voyage aux Terres Australes ; Desmarest's Mammiferes ; Vanderhoeven, Nov. Act. Acad. Caes. Leop. Cavol. t. xi. Knox, in the Me-. moirs of the Wernerian Society, and the Annales des Sciences Naturelles ; Sir Everard Home j BlainviUe, &c. &c. Blue Mountains in New South Wales. 163 rains, which, by causing the waters of the rivers which it inha- bits to swell, drive it out, and force it to keep upon the surface of the water, and among the rushes, which edge the banks. Dr Jamieson, who lives'' at Regent Villa, and who is busy collect- ing the productions of New South Wales, lias in his possession a considerable number of ornithorynchuses preserved in spirits of wine. He had the politeness to promise my companion and myself some of them ; but he has without doubt been unable to fulfil his promise. It is difficult at present to procure this ani- mal ; and the skins which one gets in the country, from being ill prepared, and not covered with preservative substances, easily spoil. On the eucalyptuses of the neighbourhood of Fish River, I ob- served several large King's-Fishers (Dacelo fulvus)y which emitted a deafening noise, that was still more increased by the echoes. Their cry is sharp and prolonged ; and these birds are stupid and fearless. Although the edges of Fish River are pretty agreeable, they yet present that monotony which is universally characteristic of the vegetation of these countries. Besides, about a score of spe- cies of Eucalyptus, the appearance of which is very much alike, there are only to be seen, and with no variety. Mimosa, Metro- sideroses, Protea, Casuarina, and a very few European genera along the edge of the waters. Hence the forests of Austral- asia have a sad and lugubrious aspect. In crossing the Blue Mountains, one cannot fail to remark the uniformity which nature has given to the leaves. Their form, excepting perhaps that of some mimosae with bipinnated foliaceous expansions, is generally simple, and they are more or less dry, stiff and smooth. She would seem to have accommodated them to the dryness of the soil^ by giving them an oblique direction, for the purpose of presenting the greatest possible surface to the air, which must furnish their principal nutriment. New Holland alone presents the singular phenomenon of entire leaves or foliaceous petioles in trees which are every where else remarked for the extraor- dinary elegance of their divided foliage. Another remark, which is not new, it is true, is, that the Blue Mountains, as well as the whole surface of New Holland, are entirely destitute of ali- mentary fruits, excepting the Sorose, a bramble allied to Rubns Jrtiticosics, and a small berry, of which the Europeans make a l2 166 M. Lesson on the Natural History of the lis of Shaw), entirely black, with a very flat shell, and a long neck, is also found in Macquarrie River. This species does not draw its head under the carapace, but lodges it upon one of the sides, between that part and the plastern, which thus afford it protection. The pretty Rainettc doree of Peron, a Physa (P. australis), and a Lymncea with a very brittle-shell, enriched our collections. On the banks of this river I observed a species of Lapwing which was extremely wild. It is called the Spur-winged Plover by the English, and is probably the Charadrlus pectoralis of Cuvier. The colonists know a reptile with a very slender body under the name of Thread-Snuke, the bite of which is followed by almost instant death ; and I have been assured that horses will not live beyond fifteen or twenty minutes after being bitten by it, I am not aware that this serpent is mentioned by any author, and it would be interesting to confirm its existence. We have not thought it necessary to give any particular ac- count of the general aspect of the country. Details of this na- ture would be out of place here ; and we prefer briefly mention- ing some of the geological objects which we had an opportu- nity of seeing during our short stay at Sydney. We shall, in the first place, make a few remarks on the race of the human species which inhabits this country. To judge by his external appearance and intellect, the native of New South Wales would seem to have been degraded from the true rank of man, and to approach the nature of the brute. Whatever may be the opinions of writers with regard to their history, and the numerous differences by which they have supposed them to be separated from other tribes of the black race, after having properly considered our data, and viewed them in every light, we here state the result of our reflections, without attaching any other importance to it. The Australian Negro race, which is peculiar to New South Wales, does not appear to us to differ in any thing essential from the Oceanic Negro race *, of which the Papous alone form another somewhat distinct branch. It presents the most perfect similarity of form and external characters to the inhabitants of New Britain, New Ireland, and very probably to those of New • The melanitic species, Homo melanianus of M. Bory de St Vincent, Art, Homme, in the Diet. Class, d'Hist. Nat. Blue Mountains in New South Wales. 165 at Bathurst two days. Mr Morinet, who commanded there, received us witli urbanity, and afforded us all the assist- ance in his power. Bathurst Plain is watered by Macquarrie River, which is the same as Fish River. Its height above the level of the sea is 1970 English feet. It contains about 6000 acres of good arable or meadow ground, which allows a large stock of cattle to be reared. It is here in particular that the Spanish breed of sheep has been propagated, which affords a beautiful wool, but which has never to this day been transported to England without being damaged. A hundred miles from Bathurst, in the interior, Wellington Valley has been cleared, and here a post of incorrigible convicts has been established. In the south-west, far beyond Mount Molle, common limestone has been discovered, a mineral substance of which New South Wales seems destitute, and of which the English are in the greatest need for the building of their houses, as the shores do not afford enough of shells for that purpose. This article was ardently sought for, and it was not without the greatest satis- faction that the cave was discovered which lies to the north of Bathurst, at the distance of sixteen miles, of which the roof is lined w ith thick stalactites of a calcareous alabaster, furnishing an excellent lime. Ten miles from this establishment, at Pine- ridge, there is a forest entirely composed of cedars, (CalUtris spiralis of Brown), the wood of which is excellent for building. Macquarrie River, which is neither deep nor broad, has its banks covered with European plants. There are found here po- tamogetons, aquatic Ranunculi, the Ly thrum Salicaria, the So- molus, the Verbena officinalis, the Polygonum aviculare, or a species closely allied to it, &c. I found fishes in this river which form two new genera ; the first species, named Gryptes Brishanii of the family of perches, and the second named Mac- quarria Australasice *. They attain a large size, and are much esteemed as food. The Gryptes is often three feet long, and nearly sixty pounds weight. An Emys (the Testudo longicoU ■ So named by MM. Cuvier and Valenciennes, in the catalogue of the Collections which we brought to the IMuseuni. I have proposed the name of Gryptes Brishanii for the first, in honour of the Governor of New South Wales, who received us with the greatest kindness. t^ 166 M. Lesson on the Natural History of the lis of Shaw), entirely black, with a very flat shell, and a long neck, is also found in Macquarrie River. This species does not draw its head under the carapace, but lodges it upon one of the sides, between that part and the plastern, which thus afford it protection. The pretty Rainette dorSe of Peron, a Physa (P. australis), and a LymncBa with a very brittle-shell, enriched our collections. On the banks of this river I observed a species of Lapwing which was extremely wild. It is called the Spur-winged Plover by the English, and is probably the Charadrlus pectoralis of Cuvier. The colonists know a reptile with a very slender body under the name of Thread-Snake, the bite of which is followed by almost instant death ; and I have been assured that horses will not live beyond fifteen or twenty minutes after being bitten by it. I am not aware that this serpent is mentioned by any author, and it would be interesting to confirm its existence. We have not thought it necessary to give any particular ac- count of the general aspect of the country. Details of this na- ture would be out of place here ; and we prefer briefly mention- ing some of the geological objects which we had an opportu- nity of seeing during our short stay at Sydney. We shall, in the first place, make a few remarks on the race of the human species which inhabits this country. To judge by his external appearance and intellect, the native of New South Wales would seem to have been degraded from the true rank of man, and to approach the nature of the brute. Whatever may be the opinions of writers with regard to their history, and the numerous differences by which they have supposed them to be separated from other tribes of the black race, after having properly considered our data, and viewed them in every light, we here state the result of our reflections, without attaching any other importance to it. The Australian Negro race, which is peculiar to New South Wales, does not appear to us to differ in any thing essential from the Oceanic Negro race *, of which the Papous alone form another somewhat distinct branch. It presents the most perfect similarity of form and external characters to the inhabitants of New Britain, New Ireland, and very probably to those of New • The melanitic species, Homo melanianus of M. Bory de St Vincent, Art. Homme, in the Diet. Class, d'Hist. Nat. Blue Mountains in New South Wales. 167 Caledonia. Their hair is woolly, thick, and arranged in hanging locks; their size is variable, but in general moderate, their average height being five feet four inches. Their cheek-bones are prominent, the nose broad and flat, the mouth large,' the lips thick ; their extremities, although slender in the greater number of cases, are often regularly proportioned. Separated into scat- tered tribes, without mutual communication, and wandering about in search of a precarious subsistence, each tribe has creat- ed a language of its own, or has been influenced by its local po- sition in the developement of its industry, which is always very limited. The poverty of the soil, and the rigour of the climate, must have exerted an influence upon the race, and deteriorated it ; and it is from this source that the slight differences arise, which seem to separate it from the African negro race, with which, however, an attentive examination shews it to be identi- cal. One may conceive the influence which, in the course of time, a country must have, which produces no eatable fruit : the inha- bitants must, have betaken themselves to hunting and fishing, and become nomadic ; they would, therefore, have regarded as useless the formation of permanent villages, and must have con- fined themselves to temporary places of shelter. They would also have chosen the most indispensable and the most simple im- plements ; they would have constructed their canoes of enca- lyptus bark, tied at the two extremities,— or made use of logs, in the form of rafts, to go into the bays and creeks. The negro race, besides, no where shews itself remarkable for its intellect, and every thing announces it to be stationary in its ideas. It has characters which aie peculiar to itself, in whatever part its branches are met with. These characters are, the divergence of language of each particular tribe; their common taste for raising conical eminences upon the skin, which is found to pre- vail as well in Congo, Madagascar, and New Guinea, as in all the parts of New Holland, — and never in the yellow Oceanic race ; a peculiar and general custom of marking the face with red and white powders in broad streaks, or of covering the hair with ochre ; the iiabit of not concealing the organs of genera- tion * ; that of passing a stick through the septum of the nose ; &c. These essential characters are in opposition to those of the • In all those which have not had any long continued communication with Europeans. 168 On the Natural History of the Blue Mountains. two races of the Oceanic Isles, which we designate by the names of the Oceanic and Mongolian branches. We shall unfold our ideas on this subject more particularly in a separate essay. In the mean time, it is probable that the negroes of New Holland have extended into the Australian Continent by New Guinea and the eastern islands, and that their migration has been made from the coast of Africa by the great island of Madagascar, which had itself, at a later period, received men of other races. Be this as it may, the number of inhabitants of the county of Cumberland is rapidly diminishing ; — and these stupid savages, insensible to all that has been tried for their improvement, have only derived from the Europeans vicious habits, which hasten their destruction, such as an inordinate taste for spirits. Syphilis and smallpox have also at length committed their ravages among them. If the number of native inhabitants is diminishing, that of the indigenous animals is also decreasing in a remarkable manner, and the period is not far distant when all the civilized parts will be destitute of kangaroos, ornithorynchuses, &c. Already the emeu (Casuarius aiistralis, Shaw) no longer inhabits the plain called by its name, and which it formerly filled. This enormous gallinaceous bird has fled beyond the Blue Mountains, or beyond the limits of cow pasture. The great kangaroo {Kangurus la- hiatus^ Geoffi'.) is now only seen in a state of domestication. I observed several of them feeding at large in the west park of Rose Hill, at Paramatta, raising themselves upon their hind feet, to observe what was going on around them, and flying ofl*, when disturbed, by long bounds, lighting, at the same time, up- on their short fore feet. This animal, the hard and coriaceous flesh of which is in little estimation, as it is only the hind quar- ters that are employed for making ordinary soups, is tamed with extreme facility. One was shewn me at Port Jackson, which had been brought up by a soldier of the garrison, and which punctually obeyed the orders of its master. It was a great adept at boxing. This kangaroo shewed a great degree of cou- rage, did not hesitate to attack a dog, and made use of its hind legs or tail for striking those whom it wished to fight, by throw- ing itself upon them with a sudden and very high bound. With its master it betook itself to sport, and played only with its two fore feet, without seeking to injure him. ( 160 ) Analyses made in Colombo of Ceyl&nese Varieties of Ironstone and Limestone. By George Middleton, Esq. Apothecary to the Forces. (Communicated by Sir James M'G rigor.) 1. Rcniform, or Kidney-shaped, Brown Clay Ironstone. — It occurs massive and globular: sometimes these are hollow, (a hollow globular ball, weighing upwards of 21 lb. is in the Museum at Colombo), surface sometimes marked with impres- sed forms. Fracture conchoidal ; lustre semi-metallic ; ad- heres slightly ttf the tongue ; streak pale-brown. Sp. gr. = 3.793, of a specimen from Matelle, and forwarded by Dr Knox for the museum ; 4.06 of a specimen from the eastern part of the island. The constituent parts, after two careful analyses, are as follows : — Silica, 10 ; alumina, 3 ; lime, 22.5 ; magnesia, 8.5 ; oxide of iron, 50 ; water, 4 ; loss, 2. = 100. 2. Gramdar Foliated Limestone. — Is white and translucent. Sp. gr. n 2.853 ; constituent parts, lime, 50 ; carbonic acid, 42; silica, 2; magnesia, 2; water, 2; loss, 2. =i 100. It is quarried at Kandy, and employed for building purposes. 3. Common Compact Limestone. — Its colour Is greyish white. Sp. gr. = 2.578 to 2.6 ; constituent parts ; lime, 52 ; carbonic acid, 42; magnesia, 1.5 ; water, 2.5; Loss, 2. = 100. This limestone was brought from Poaeloor Cavern, near Jaffna, and was part of a collection of minerals sent by Governor Sir E. Barnes to the Museum at Colombo. We have much pleasure in communicating the preceding analyses to our readers, as they are probably among the first regular analyses of minerals hitherto made in India. We feel confident that Dr CoUier, President of the Colombo Museum, to whom Mr Middleton's communication was addressed, who is an intelhgent naturahst, and active medical officer, will continue to encourage the taste for natural history and chemical minera- logy in the East. ( 170 ) Letter Ji'om Professor Leslie to the Editor on Mr Rltchie^s Experiments on Heaty and New Photometer. My Dear Sir, JlLaving long projected the publication of a complete Trea- tise on the Theory and Application of Heat, I have generally overlooked such statements as have gone forth tending to limit, modify, or contradict the principles I had already established, being convinced that the precise and decisive experiments which I shall produce, must dispel every shadow of doubt. My anxiety to advance nothing except what was ascertained by the most scrupulous accuracy, has hitherto retarded the appearance of that work ; but I purpose, without further delay, to perform the task thus imposed. In the mean time, I may stop to notice a circumstance which has been sedulously turned against the doctrines which I had propounded. If a red-hot ball be held behind a glass-screen, in front of a metallic reflector, a considerable impression of heat is concentrated at the focus ; from .which it has been hastily con- cluded, that the calorific rays emitted from the ball (I borrow the usual language, though it involves an assumption) pass freely through the glass. But the fact is readily explained, from the established principle, that the screen becoming much heated, soon acts upon the reflector by its own radiation. Mr Ritchie, Rector of the Academy at Tain, has, in a paper printed in the first part of the Philosophical Transactions for the present year, endeavoured to oppose this explication by some other ex- periments. Suspending the hot-ball behind a very thin disc of glass, he fotind a delicate thermometer placed before it to be sensibly affected, though he kept blowing against the disc with a bellows. Now, here lies the fallacy of the experiment ; for the current would certainly not make the screen colder than the air of the room, as Mr Ritchie supposes, but only prevent it from acquiring so high a temperature as in a still atmosphere. I have elsewhere shewn, that a wind of eight miles an hour only doubles the dissipation of heat from the surface of a body. The continual accumulation from the ball would therefore still enable the disc to radiate profusely. Letter from Professor Lcdie to the Editor, 171 It would be unnecessary to follow the rest of the experiments brought forward by Mr Ritchie, which seem neither happily devised, nor capable of much accuracy. But a very simple and unexceptionable experiment will set the question at rest. I had a dift'erential thermometer, with pa- rallel branches, constructed of rather large dimensions, one of the balls blown as thin as possible, and the other extremely thick, perhaps the fifteenth part of an inch in thickness. Into the cavity of this ball, sulphuric acid, tinged with carmine, was in- troduced, sufficient to fill both branches; and the tubes being- united, and properly bent, the liquid was adjusted to stand about the middle of the stem, under the thin ball. On placing the instrument near a clear strong fire, the thin ball being more quickly affected, the liquid sank rapidly in the stem, but again rose gradually, and in the space of about ten minutes recovered its station. There it remained, but with a slight fluctuation, owing to some occasional variation in the strength of the fire, or to the fluctuation in the air of the room. On withdrawing this differential thermometer again, the liquid mounted swiftly into the thin ball, but again subsided gradually to its stationary point. Since both balls, then, were placed in exactly similar circum- stances, it follows, that they were equally affected by the afflux of heat, and that no portion of this heat had been transmitted through either of them. When this differential thermometer was employed as a pho- tometer, it indicated a different effect. Placed in the inside of a room, but close to a south window at noon, the liquor always mounted several degrees, a sensible portion of the light of the sun being absorbed by the thick ball, while it passed without interruption through the thin ball. I have only to add, that the instrument which Mr Ritchie proposes in the same volume, as a new and peculiarly delicate photometer, is only one of the vai'ious modifications of the diffe- rential thermometer, which in my earlier experiments I tried for measuring small quantities of light, but which I soon laid aside, on finding its performance to be quite irregular and un- certain. 17^ Dr Graham's Descripti(m of New or Rare Plants. It is not difficult, indeed, to contrive that an instrument shall have a wide range ; but the obstruction to its motion is hence increased, and its power of action is yet proportionally di- minished. Accordingly, the simple barometer is esteemed now by far the most accurate ; while those barometers of a complex construction, but with large divisions, have deservedly fallen in- to disrepute. Queen Street, imh Dec. 1827 :•} Description of several New or Rare Plants which havejlowered in the Royal Botajiic Garden, Edinburgh, during the last three months. Communicated by Dr Graham. 10th December 1827. Buddleia madagascarensis. Lamarck, Encyclop. Method, vol. i. p. 513. — Tableau Encyc. et Method, vol. L p. 291. t. 69. fig. 3. B. madagascarensis ; ramis sub-tetragonis, tomentosis ; foliis integerrimis, ovato-lanceolatis, petiolatis, supra nudiusculis, venoso-rugosis, subtus albido.tomentosis ; paniculis terminalibus, pedicellis sub-trifloris. Description — Shrub erect, with long, slender, diffused branches; bark pale brown. Younger branches, petioles, back of the leaves, peduncles, pedicels, calyx, and even the outside of the corolla, though this in a smaller degree, covered with dense, white, soft tomentum, which often becomes partially brown. Leaves decussating, petioled, ovato-lanceolate or slightly cordate at the base, acuminate, soft, on the upper side dull sap-green, and sprinkled rather sparingly, especially on the young leaves, with white tomentum, slightly wrinkled, reticulated, middle rib and the veins prominent below, channelled above. Panicle handsome, (7 inches long from its first branch to the apex,) terminal, erect, bracteate, with two long opposite branches at the base, subdivided like the leading stalk. Pedicels like little corymbs, generally supporting three flowers, though often only one near the apex, and sometimes four below. Lower braciecB below the branches at the base of the panicle, resembling small leaves, the others subulate, one below each pedicel, and nearly as long as it, smaller upwards, similar ones at the sides of the lateral flowers. Ca- lyx small, (scarcely one-eighth of an inch long,) ovate, 4.toothed. Co- rolla^ tube (three-eighths of an inch long), cylindrical, white, slightly hairy within ; limb 4-cleft, perfectly naked above, segments nearly half the length of the limb, blunt, linear, spreading and yellow when first expanded, afterwards reflexed, revolute in their edges, and deep uniform orange colour, faintly and not agreeably perfumed. Anthers 4, sessile in the throat of the corolla, linear, pollen whitish. Gormen round, green- ish, and with the filiform, colourless style somewhat hairy^ stigma green, oblong, bilobular, subexserted. Our specimens of this very handsome species were several years ago sent to us, with a liberality by which I often profit, and which I am always happy to acknowledge, from the Royal Botanic Institution of Glasgow, and introduced into it, I believe, direct from India. The tomentum, by which it is so generally covered, is pure white, and could only have Dr Graham's Description of New or Rare Plants. 17S been described as rusty, from the characters formerly given having been taken from dried specimens. Even these, however, if they have been carefully prepared, remain white. To the same cause I wotlld attribute the sparing tomentum on the upper surface of the leaves having been overlooked, and the slight difference in the form of the limb of the co- rolla in Vahl's description (Symbol. Botan. Pars iii. p. 14.), and in La- marck's figure, from that which I have observed Cassia opaca. C opaca ; calycis foliolis obtusis, bracteolis solitariis infra pedicellos, an- theris biporosis, glabris ; foliis 5-C jugis, foliolis oblongo-ovatis, ciliatis, nitidis, glandula acuta, pedicellata, inter 1-3 paria inferiora ; stipulis ovatis, magnis, erectis, deciduis ; racemis axillaribus, pedicellis patenti- bus. Description" — Shrub^ erect. Branches scattered, and slightly flexuose, green, and somewhat pubescent when young ; hark on stem and older branches brown. Leaves scattered, spreading or divaricated, leafets in 5 or 6 pairs, oblong-ovate, dark green above, pale below, slightly revo- lute and ciliated on the margin, every where else smooth and shining. Petiole swollen, but having no gland, at its base, a small pointed stipitate gland between one, two, or three of the lowest pairs of leafets. Stipula Targe, ovate, erect, and embracing the axil of the leaf, dciduous. -ffa- cemes axillary, collected towards the extremities of the shoots, erect, half the length of the leaves ; peduncle without flowers for a considerable distance above its origin, pubescent ; pedicels pubescent, long, straight, spreading nearly at right angles to the peduncle. Floivers looking down- wards, handsome, every part except the receptacle, anthers, and gennen, of orange-yellow colour ; receptacle yellowish-green, and large. Calyx segments smooth, blunt, of the same colour as the corolla, concave, two outer phylla smaller. Corolla ; petals clawed, three upper subrotund, notched, undulated, S-nerved, the lateral nerves branched from their base, and reticulated towards the edge of the petal, central petal the largest, two lower boat-shaped, blunt, without notch or undulations, veins indistinct. Stamens very unequal. Anthers large, dark brown, smooth, opening by two pores at the extremity. Pistil bent down ; germen green, curved upwards, compressed, many-seeded, having on its surface a few adpressed hairs. This is a very handsome species, the orange coloured flowers contrasting very prettily with the opaque deep green shining foliage. We received a plant from Raith this season, it having been raised by Mr Ferguson's gardener from South American seeds, communicated by Professor Leslie in 1825. Leonotis nepetifolia. L. nepetifolia ; " foliis cordatis, acutis, inciso-crenatis ; calycibus aristatis, octo dentatis, dente supremo maximo, caule herbaceo." Bot. Reg. f. 281. Description — Annual. Stems herbaceous, erect, green, simple, but with the rudiments of branches in the axils of the leaves, tetragonous, angles very obtuse, sides deeply channelled. Leaves bright green, petioled, de- cussating, spreading, cordate, slightly decurrent along the petioles, deeply serrato-crenate, reticulato-veined, soft, inodorous, covered with fine short and soft pubescence on both sides, veins and their reticulations prominent below, slightly channelled above ; petioles as long as the leaves, and spread- ing at right angles to the stem. Spike terminal. Flowers nearly sessile, in dense, nearly globular, distant whorls, the upper flowers in each ex- panding first. Bracteae numerous, sun-ounding the base of the whorl, and nearly hid by it, reflected, keeled, linear, mucronate. Calyx curved, subventricose and cucullatc, enlarging afler the corolla falls, 10-nerved, bilabiate ; the upper lip 3-nerved, tapering into one long, straight tooth ; the lower lip about half the length of the upper, S-nerved, and divided into three teeth, spreading nearly at right angles to the tube; throat 174 Dr Graham's Description of New or Ra^-e Plants. with two teeth on each side nearly as long as those of the lower lip, at first spreading, but as the corolla fades, becoming erect, and finally, with the sides of the calyx, advancing so as to contract its throat; all the teeth terminated by hard bristles, whole calyx slightly pubescent on the outside. Corolla bilabiate ; lower lip short, 3-lobed, withering almost immediately after expansion ; upper lip elongated, equal in length to the tube, nearly straight, but slightly arched at its extremity, and 2-toothed, the whole of the corolla except the lower lip and base of the tube, which are smooth, thickly covered with red shaggy hairs, diminishing from the apex of the upper lip downwards. Stamens 4, didynamous, rather longer than the upper lip, and hanging loosely ; filaments arising from the throat of the corolla, subulate, nearly colourless, slightly pubescent; anthers crescent- shaped, pale yellow, attached by their backs to the filaments, smooth. ' Germen elongated, and truncated ; style filiform, nearly as long as the stamens ; stigma cleft, one of the segments very small. The figure in the Botanical Register is very good, and the description gene- rally correct, though both were made from a dried specimen. There is a wide range over which it appears that this species is found native. It is certainly the same as the East Indian plant, as is remarked in the Bo- tanical Register. From the statement in the same work, there is rea- son to believe that it grows in the neighbourhood of the Congo. In the Herbarium of this University, there is an indigenous specimen from Dominica, communicated, along with a valuable collection, by my friend Staff-Surgeon Lyons ; and our plants in the Botanic Garden were raised from seeds, collected by Dr Gillies, in South America, and received through Patrick Neill, Esq. in May last. They have been kept in the stove. Loasa patula. Xf patula ; capsula contorta, quinque loculari ; calyce marcescente. Description — Root branching, fibrous. Sterna herbaceous, numerous, spreading wide, ascending, branched, 4-sided, pale, succulent, semipellu- cid, streaked with deep green. Leaves opposite, decussating, petioled, spreading, 3-lobed, the middle lobe by much the longest, lobes doubly in- cised, each with a strong branching middle rib ; petioles channelled, and stem clasping. Peduncles axillary, erect, tapering, round, longer than the leaves. Bractece^ 2 at the top of the peduncle, small, subulate. Flowers nodding. Cal^ of 5 subulate segments, marcescent. Corolla S-petaled ; petals white, spreading at right angles to the axis of the flower, cucul- late, compressed, clawed, with one, sometimes two teeth, on each edge, at the lower part of the limb, and one at the extremity. Stamens numerous, inserted into the receptacle, inclosed by the petals, till the pollen is ripe, when they become erect, and advance to the centre of the flower ; filaments reaching half-way up the hollow of the petals, filiform, colour- less, united into five bundles at the base ; anthers short, bilocular, burst- ing at the side, greenish-yellow; pollen white. Germen inferior, ob- ovate, twisted, green, quinquilocular, seeds numerous, and attached to the dissepiments ; style straight, cylindrical, pointed at its extremity, at first shorter than the nectaries, afterwards nearly twice as long; stigma very minute ; nectaries ten, slender, flattened, curved, half the length of the filaments, and included in pairs in five sheaths, which are erect in the centre of the flower around the style, opening longitudinally on their inner side, yellow, with two reddish-orange bands passing a- cross them near their apex, and two terminal oblong spots : the first band consists of short broad streaks, arranged side by side, and- longi- tudinally in reference to the sheath ; the second of a continuous, somewhat projecting edge. At the base of each sheath, and equal to more than half its length, there are three spreading yellow threads, and at the apex two smaller, and colourless ; the last at first erect, afterwards recurved. Whole plant, even to the corolla, covered with inverted stinging hairs, which arise from glands, and transmit Dr Graham's Descriptimi of New or Rare Plants. 175 through them a transparent fluid secreted by these. This fluid is also seen with the microscope scattered over the plant in little receptacles under the cuticle. There are besides these hairs, others, smaller, barbed along their whole length, but not proceeding from obvious glands. Si- milar hairs are observed in greater numbers in L. nitula, and probably in other species. They are possibly merely abortive appearances of the more formidable pubescence. We received seeds of this plant, under the name of Blumenbachia insignis, from Dr Fischer of Gottingen, in February 1827, without any notice of its native country, which, however, without doubt is South America. The peculiarities of the germen and calyx which I have adojited as the spe- cific character, may be considered enoudi to constitute this a genus dis- tinct from Loasa ; but however true it is that natural genera are formed in innumerable instances on modifications of these parts, yet I conceive that this is an example, among many others, in which a good rule, if ap- plied indiscriminately, would disunite individuals among whom nature has estabUshed the closest aflinity. In the whole habit, appearance and stiTicture, with the exceptions above stated, this is a Loasa. Polemonium Richardsonii. P. Richardsonn ; cauli piloso^ angulato, erecto ; foliis pinnatis, multijugis, pinnis ovato-rotundatis, mucronulatis, subtus pubescentibus ; floribus corymbosis, nutantibus, corollse segmentis obtusis, crenulatis; radice subfusiforme, longissima. Description — Root perennial, very long, in the old plant 3 or 4 feet, yellow, about as thick as the finger, somewhat branched at the apex, descending deep into the sand, and tending to bind it together, very much resembling liquorice. Stem erect, herbaceous, green, purplish at the base, branched. Brandies axillary, chiefly from the lower part of the stem and the crown of the root, ascending, as well as the stem an- gular, and having a slightly prominent line along each flat side. Le&ves pinnate, with an odd leafet ; common footstalk channelled, from the leafets being narrowly decurrent, and forming a border on each side ; pinnae very numerous on tlie root-leaves (10 or 12 pairs), fewer on the stem-leaves, quite entire, a very few shewing a tendency to become lobcd, sessile, rotundato-ovate, mucronulate, oblique, pubescent below, naked above, somewhat fleshy, middle rib channelled, veins obscure ; root-leaves depressed, and spreading, star-like, on Uie ground, at least when the plant is young. Flowers in terminal corymbs, buds nodding, when fully expanded fronting outwards, large, pedicels round. Calyx' persisting, ovate, as well as the stem, branches, and pedicels, villous, and slightly viscid, 5-cleft ; segments ovate, pointed, spreading a little while the corolla is fully expanded. Corolla slightly marcescent, but soon after falling, perfume faint but disagreeable, salver-shaped ; tube nearly as long as the calyx, yellow and somewhat plaited in its upper half, colourless below ; limb of five broad, obovat^, spreading segments, minutely crenated, pale puqile marked with deeper veins, darker at its base, where on the outside it is very slightly pubescent. Stamens five, included ; filaments connivent, slender, flattened, awl-shaped, contracted at the base, inserted into the apices of small, connivent, hairy valves, which arise within the throat of the corolla, alternately with the seg- ments of the limb ; anthers sagittate, curved inwards, large, white ; joo/- len white. Gormen small, ovate i style filiform, equal in length to the fi- laments ; stigma in most of the flowers 4.cleft, revolute, pubescent. Seeds gathered by Dr Richardson in 1825, from plants growing in deep sandy soil on Great Bear Lake, in 66° North liatitude, and received from him in this country in 1826. The species flowered in a cold frame at the lloyal Botanic Garden, Edinburgh, in the beginning of October 1827. I have a double reasan for dedicating this species to our excellent and in- defatigable countryman. It is the first which has flowered among the 176 Dr Graham's Description ofNeiv or Rare Plants. plants raised from seeds received from him last year ; and while I was in the act of writing the description, I received information of his ha- ving arrived in Edinburgh from his last successful survey of the shores of the Arctic Sea. Salpiglossis atro-purpurea. S. atro-purpurea ,• foliis lanceolato-ellipticis, convexis, sinuatis, superiori- bus integerrimis, linearibus ; stylo edentulo. Description — Stem herbaceous, procumbent for a little way at the base, afterwards erect, 2 feet high, somewhat flexuose, branching. Branches ascending. Leaves scattered, varying considerably in shape, the larger (3-4 inches long, 1^-1 1 broad) lanceolato-elliptical, often nearly ellipti- cal or ovato-elliptical, flaccid, and folded back from the middle rib, si- nuated, the segments generally blunt and entire, sometimes sharp and occasionally toothed on their sides, decurrent along the petiole, which is nearly equal in length to the leaf; upper leaves lanceolato-linear and entire, and on the flowering branches passing into linear hractece. Flowers on loose terminal panicles^ Pedicels opposite to, or alternate with, the bractese, stout, slightly curved upwards, as well as the stem and branches, cylindrical. Calyx persisting, oblong-ovate, 5.cleft, segments acute, 5-angled, angles deep green, the intervening spaces paler and rugose. Corolla large, inserted into the receptacle, veined, rich deep purple with- in, more lurid on the outside, funnel-shaped ; tube cylindrical, twice the length of the calyx ; throat much inflated, a little more on its lower side, and half as long again as the tube ; limb spreading, 5.cleft, segments ob- cordate, the largest above, the two smallest below ; stamens four didyna- mous, with the slender rudiment of a fifth between the two longer, in- serted into the orifice of. the tube of the corolla ; filaments slightly flat- tened, purple towards the anthers, paler below ; anthers very large, yel- low, ovate, bi-lobular, bifid at the base, the outer lobe always the largest ; pollen yellow. Germen conical, channelled on both sides, bilocular, green ; style single, terminal, slender below, transversely flattened and much ex- panded above, without lateral teeth, pale green, longer than the fila- ments, included; stigma truncated, cleft along its extremity, green. The stem, branches, leaves, pedicels, and calyx, are covered with a soft, glan- dular, glutinous pubescence, which appears more sparingly on the out- side of the corolla, and on the filaments. When fading, the upper part of the corolla is nearly deliquescent, the decay beginning in round trans- parent spots, the lower part is somewhat marcescent. It is impossible to suppose this the same species with the S. straminea of Hooker, Ex. Fl. t. 229. ; yet as the leaves probably vary, it may not be easy to find good specific characters. It seems a larger and more robust plant, the branches and pedicels being considerably stouter and more straight, and the stamens inserted higher in the tube. It first flowered in the greenhouse of Mr Neill, Canonmills, Edinburgh, from seeds sent, by Dr Gillies from hills fifty miles beyond Mendoza. Both the species have flowered freely in the stove of the Royal Botanic Garden, Edin^ burgh, in September and October, the seeds having been sent from the f Cordillera by Mr Cruckshanks in 182G. Both differ from the Salpiglossis figured by Ruiz and Pavon, Prodr. Fl. Peru v. et Chil. t. 19. in the seg- ments of the corolla being larger, more spreading, and obcordate rather than emarginate, and in the absence of teeth on the style* Our speci- mens of -S*. straminea have the tube of the corolla as long as in the S. atro- purpureay which is considerably longer than in Dr Hooker's figure; and in this respect both agree with the figure of Ruiz and Pavon. Verbena barbata. V. barbata ; caule sufTruticoso, erecto, tetragono, angulis barbatis ; foliis petiolatis, cordato-ovatis, acutis, crenato-serratis, utrinque pubescenti- bus ; spicis terminalibus, strictis, gracilibus. Celestial Phenomena from Jo/n. 1. to April 1. 1828. 177 Description — Stem somewhat woody below, square, contracted at the origins of the leaves, streaked, rough, angles prominent, and covered with hard spreading hairs. Our plant is branched at the bottom ; but as the branches are herbaceous, and stand right up like as many stems, without being farther divided, it is possible that both the woody structure, and the branching, may have arisen from the leading shoot having been cut down. Leaves petioled, opposite, decussating, spreading, cordato-ovate, reticulato-veined, pubescent on both sides, rather unequally crenato- serrated. Spikes terminal, solitary, slender. Bractea subulate, longer than the little pedicel. Flowers small, solitary. Cali/x green, channel- led, more than twice the length of the braeteae, pubescent, hairs erect. Corolla pale pink, funnel-shaped, pubescent, hairs reflexed ; tube twice the length of the calyx ; limb erect. Anthers included ; filaments in* sccted into the tube of the corolla. Germen ovate; style filiform ; stigma hooked, exserted just before the bud fully expands, but afterwards in- cluded by the elongated corolla. This species has no beauty, nor does it possess any interest except that it is new. We received the plant from Mr Hogg at New York last spring, under no name, but with the information that it had been procured from. Mexico. Celestial Phenomena from January 1. to April 1. 1828, calcti- lated for the Meridian of Edinhnrgh^ Mean Time, By Mr George Innes, Aberdeen. The times are inserted according to the Civil reckoning, the day beginning at midnights — Th« Conjunctions of the Moon with the Stars are pven in Right Ascension. JANUARY. D. w- / // D. H« / // 2. 5 47 15 O Full Moon. 13. 10 36 54 d])vTTL 2. 18 36 :)7 6 1)h 16. 2 27 22 6^yn 4. 15 2 2 % 3' 20" N. of ^ 16. 5 12 10 6D^ ' 4. 17 57 53 d D 1 a 225 16. 6 33 51 b3'18"S.ofJn 4. 19 3 6 I) 2a 225 17. 20 48 New Moon. 5. 1(5 24 10 6 Do^ 17. 3 53 28 dDJS 6. 2 29 45 dD'T^ 17. 12 16 52 69^n 8. 59 12 ^0b 18. 6 44 17 Im. I. sat. 1/ 8. 5 5 39 dD"^ 18. 19 2 45 d))? 9. 17 30 37 d?^ VI 19. 7 - - d0¥ 10. 4 36 8 Im. II. sat. y 20. 23 44 21 enters 5» 10. 7 9 41 ( Last Quarter. 22. 11 41 51 d })^ K 10. 11 17 37 d \^n 23. 20 44 4 ]) First Quarter. 11. 4 50 51 Im. I. sat. % 24. 5 47 18 dy2«- 11. 11 11 6 D^TIJ 26. 10 2 7 d(?4?:-: 11. 22 53 6 dD^ 26. 13 33 25 d ])' « 12. 1 21 48 d ])2« — 27. 3 6 7 Im. I. sat. 1 12. 5 23 56 dDc^ 29. 22 27 22 6Dh 12. 18 36 24 dD4C^ 30. 1 5 14 66^^ 12. 19 30 9 d9vn OCTOBER DECEMBER 18^7. 1T8 Celestial Phenomena Jrom Jan. 1. to April 1. 18^8. FEBRUARY. MARCH. D. H. / .V D. ^' / // 2 10 d D 1 « 2o 1. 14 59 25 66* n. 1 4 52 O FuU Moon 1. 18 52 58 O Full Moon. 1 7 28 d D 2a 25 1. $ greatest elong. 1 22 25 6 ?^«5 2. 16 51 6D-^ 22 3 3 6l)oSl 3. 8 39 18 $29".5N.ofC K 2. 8 23 36 6D ^ 5. 23 10 31 6D^^ 3. 4 59 32 Im. I. sat. yi 6. 1 30 9 Im. I. sat. y. 3. 7 17 - Sup. d ? 6. 13 47 19 d})2«:^ 4. 2 42 11 Em. III. sat. y. 6. 16 58 51 dDV 4. 5 19 55 dd^ — 7. 58 44 Im. II. sat. y 4. 10 44 28 6D»Sl 7. 7 44 44 6D^^^ 5. 12 35 69f^ 7. 16 27 57 6D^^ 7. 17 45 46 61)^W 9. 2 13 50 dDd 8. 8 20 50 6])^'-^ 9. 5 15 54 ( Last Quarter. 8. 10 22 50 dDV 12. 4 17 40 d])¥ 8. 19 56 17 ( Last Quarter. 12. 5 14 30 dD^n 8. 22 13 17 c5d/3Tl^ 13. 3 23 43 Im. I. sat. y. 9. 2 9 14 d])4e:cc. 14. 3 31 48 Im. II. sat. y 9. 10 45 33 dD^:^ 15. 21 33 49 New Moon. 9. 17 8 52 6D6 16. 3 23 44 dD$ 9. 18 55 29 dDvTIi 17. 7 23 8 6D*K 11. 4 3 45 Im. II. sat. 1/ 17. 11 38 23 ■6D^K 11. 4 29 17 Im. III. sat. V 18. 17 15 Im. III. sat. y 11. 11 17 8 ddvTTi 18. 2 26 1 Em. III. sat. y 12. 1 21 16 Im. I. sat. y 18. 6 15 - Sup. d $ 13. 17 19 4 dD¥ 20. 14 42 16 enters T 13. 20 22 dDf^n 21. 2 4 48 d Di^ « 15. 10 46 51 New Moon. 21. 2 35 44 d D20th Noveinher 1827. 1827, Aug. 17' To LE3IUEL Wellman Wright of Mansfield Street, Borough Road, Surrey, for improvements in the construction of Cranes. 21. To Lemuel Wellman Wright of Mansfield Street, Borough Road, Surrey, for improvements in machinery for Cutting To- bacco. To Gabriel de Serras of Leicester Square, Stacey Wise, apd Charles Wise, of Maidstone, paper-makers, for certain improve- ments communicated from abroad, in Sizing, Glazing, or beauti- fying the materials employed in the manufacturing of paper, paste- boardj'i^Bristol-boards, &c. List of EngUsh Patents. 211 Aug. 30. To John Hague of Cable Street, Wellclose Square, for a new me- thod of working Cranes or Tilt Hammers. To B. M. Combs of Birmingham, for certain improvements on, or additions to, a Pulley Machinery, and apparatus used for securing, fixing, and moving curtains, and roller and other blinds. To William Deltmee of Upper Mary-le-Bonne Street, Fitzroy Square, pianoforte-maker, for improvements on Pianofortes. Se])t. C. To William J. Ford of Mildenhall, fan-ier, Suffolk, for improve- ments in the make, use, and application of Bridle-bits. To George Clymer of Finsbury Street, for an improvement in Typographic Printing between plain or flat surfaces. Oct. 11. To Joseph Hall and Thomas Hall of Leeds, for an improve- ment in the making of Metallic Blocks for drawing off liquids. To Elias Carter of Exeter, for a new covering for the Roofs of Houses, &c. To Joshua Horton of West Bromwick, boiler-maker, for a new method of forming and making of Hollow Cylinders, Guns, Ord- nance, Retorts, and various other hollow and useful articles in Wrought-Iron, in Steel, or composed of both these metals. To Goldsworthy Gurney of Argyle Street, Hanover Square, surgeon, for improvements in Locomotive Engines, and other ap- paratus connected therewith. To James Stokes of Cornhill, London, for improvements in ma- king, boiling, burning, clarifying or preparing Raw or Muscovado bastard Sugar and Molasses. To John Wright of Prince's Street, Leicester Square, for im- provements in Window Sashes. Nov. 6. To James Smethuest of New Bond Street, for an improvement upon Lamps. To Frederick Foveaux Weiss of the Strand, surgeon*s-instru- ment-maker, for improvements in the construction of Spurs. 8. To James White of Paradise Street, Lambeth, engineer, for a ma- chine or apparatus for filtering, which he denominates an Artifi- cial Spring. 10. To John Platt of Salford, near Manchester, fustian-dresser, for certain improvements in machinery for Combing Wool, and other fibrous materials ; communicated from abroad. To Williaji Collier of Salford, fustian^shearer, for certain im- provements in the Power-Loom for weaving ; communicated from abroad. 17. To John Walker of Weymouth Street, Mary.le-Bonne, Esquire, for an improved Castor for furniture. To Henry Pinkus of Philadelphia, for an improved method of Pu- rifying Carburetted Hydrogen Gas for the purpose of illumination. 20. To Sa3iuel Sevill of Brownshill, in the parish of Bisley, Glou- cestershire, clothier, for his himprovements applicable to raising the Pile, and dressing Woollen and other Cloths. ( ^12 ) List of Patents granted in Scotland from 3d October to 6th December 1827. 1827, Oct. 3. To Peter Burt of Waterloo Place, in the parish of St Ann, Lime- house, in the county of Middlesex, mathematical instrument- maker, (in consequence of a communication made to him by a cer- tain foreigner residing abroad) for " an improvement on Steam- Engines." 24. To Joshua Horton of West Bromwick, in the county of Stafford, boiler-maker, for " a new and improved method of forming and making of hollow Cylinders, Guns, Ordnance, Retorts, and various other hollow and useful articles in wrought-iron, in steel, or com- posed of both of these metals." Nov. 2. To Samuel Pratt of New Bond Street, in the parish of St George, Hanover Square, in the county of Middlesex, camp-equipage. ma- nufacturer, for " certain improvements in Bedsteads, Beds, Couches, and other articles of furniture, principally designed to be used on shipboard.'* To Thomas Breidenbach of Birmingham, in the county of War- wick, merchant, one of those designed Quakers, for " certain im- provements on Bedsteads, and in the making, manufacturing or forming articles to be applied to or used in various ways with bed- steads, from a material or materials hitherto unused for such pur- pose." 22. To William Fawcett of Liverpool, in the county of Lancaster, engineer, and Matthew Clark of the island of Jamaica, en- gineer, for " an improved apparatus for the better manufacture of Sugar from the Canes." 28. To Bennet Woodcroft of Manchester, in the county of Lancas- ter, manufacturer, for " certain processes and apparatus for print- ing and preparing for manufacture Yams of Linen, Cotton, Silk, Woollen, or any other fibrous materiaL" 29. To Lemuel Wellmann Wright of Mansfield Street, Borough Road, in the county of Surrey, engineer, for " certain improve- ments in the combination and arrangement of Mechanical Powers, applicable to the purposes of driving machinery, and lifting and moving heavy bodies." 29. To Lemuel Wellman Wright of Mansfield Street, Borough Road, in the county of Surrey, engineer, for " certain improve- ments in the combination and arrangement of machinery for ma- king Metal Screws." Dec. 6. To Joshua Jenour junior of Brighton Street, in the parish of St Pancras, in the county of Middlesex, gentleman, for " a Cartridge or Case, and Method of more advantageously inclosing therein, shot or other missiles, for the purpose of loading fire-arma and guns of different descriptions." THE EDINBURGH NEW PHILOSOPHICAL JOURNAL. I37L BwgraphicalMemoir of Peter Simon Pallas, Counsellor of ^jy^ State to^^Imperial Majesty of all the Russias,^ By Baron^A^^^ CuviER, Knight, Professor, &c. W HEN a man has devoted his whole life to science, when, being occupied solely in observing and writing, he has only in- termitted his researches during the time necessary for their pub- lication, — it might be expected that his career would not be marked by any remarkable incident, and that the analysis of his works would, in a manner, present the history of his life. But if, labouring only for those engaged in the same pursuits, he disdained to render his writings attractive to others ; if, with the view of presenting the greatest number of facts in the short- est space, he uniformly stated them in the simplest manner, and left to others the easy merit of deducing their results; this very analysis becomes a matter of extreme difficulty, and to give any distinct conception of his works, it would be necessary to tran- scribe them. Such was Pallas. Separated in his youth from his family and country, a third of his life was passed in the deserts, and the rest in his cabinet ; and in both situations he made a prodi- gious number of observations, and produced a multitude of me- moirs and volumes. The whole of his writings, though desti- tute of embellishment, are full of novelties and truths ; they have placed the name of their author in the first rank among naturalists, who are continually turning them over, and quoting JANUARY — MARCH 1828. P 814 Biographical Memoir of Peter Simofx Pallas. them in every page ; they are received and consulted, with equal interest, by historians and geographers, by those wlio study the philosophy of languages, and the character of nations. But it is precisely this multiplicity and this diversity of his labours that obliges me, at present, to reduce his eulogiuni almost to a mere table of contents, which it would be impossible for me even to read in full, and for which I entreat, beforehand, the indulgence of my auditors. Peter Simon Pallas, Counsellor of State of the Emperor of Russia, Knight of the order of St Volodimir, member of the Academies of Science of Petersburg, London, Berlin, and Stock- holm, and Foreign Associate of the Institute of France, was born at Berlin on the 22d September 1741. His father was Si- mon Pallas, Professor of Surgery in the University of Berlin, and his mother, Susanne Leonard, who was of French extrac- tion, but born in the Colony of French Refugees established at Berlin. Being destined by his father for the medical profession, he was, at an early age, instructed in various languages, and made such rapid progress, as, in a short period, to be able to write, with nearly equal facility, in Latin, French, English and Ger- man. This faculty, which is more easily acquired in youth, will, without doubt, every day become more general, more especially as the sciences have ceased to possess a common language, and as there is not a single great empire in Europe in which several are not spoken. It cost so little trouble to the young Pallas, that he was always at the head of his companions in their other studies, and, not content with what his masters assigned him, he occupied his leisure hours in Natural History, and with so much success, that, at the age of fifteen, he sketched ingenious divi- sions of several classes of animals. After attending the lectures of Gleditsch, Meckel and RoloflP at Berlin, and of Rcederer and Vogel at Gottingen, he went to Leyden to finish his medical studies under Aibinus, Gaubius and Muschenbroeck. At this period, the possession of numerous colonies in both Indies, and the command of the commerce of the world, for two centuries, had accumulated in the Dutch collections the rarest Biographical Memoir of Peter Simon Pdilas. 215 productions of nature ; and the taste for natural history, for which the mother of the last stadtholder was so much distin- guished, gave d new impulse to its study. With the decided predilection which Pallas brought with him into such a country, it was impossible that his ardour for that science should not be increased. A voyage to England still far- ther strengthened and increased it, and, having formed the reso- lution of making it henceforth the occupation of his life, he so- licited his father''s permission to settle at the Hague. It was there thdt he published, in 1766, Elenchus Zoopliyto^ rum, or table of zoophytes, the first of his great works. Five-and- twenty years before this time, corals had been generally considered as plants ; and the discovery which Peyssonnel made of their ani- mal nature appeared to Reaumur so paradoxical, that, in publicly mentioning it, he did not venture to name its author. But, shortly afterwards, the more astonishing discoveries of Trembley, regard- ing the divisibility of the polypus, and the detailed observations of Bernard de Jussieu and Ellis, on the corallines of our shores, dispelled every doubt on the subject. With the consent of all' naturalists, an entire order of organised beings passed from one kingdom to another : Linnaeus inscribed them among the ani- mals ; the young Pallas undertook to arrange them, and draw VLp their catalogue. The Dutch collections furnished him with a rich harvest of them, which he arranged with a rare degree of sagacity. The preciseness of his descriptions, and the care with which he referred the synonyms of other authors to his speciesf, were very remarkable in an author of only twenty-five years of age. His introduction was still more so. He rejected the old division of natural objects into three kingdoms, and shewed that plants have not marked classes like animals, insomuch that they are only, so to speak, one of the classes of the great organic kingdom, as quadrupeds, fishes, and insects seVerally are ; a truth with which our botanists seem scarcely impressed at the present day. In maintaining this approximation of the two kingdoms, he did not, however, also adopt the single scale of be- ings, which the genius of Bonnet had rendered so popular ; on the contrary, he presented the tree of organisation as producing a multitude of lateral branches, which it would be impossible to arrange in linear continuity, without doing violence to nature. p2 216 Biographical Memoir of' Peter Simon Pallas. With regard to corals, in particular, he shewed the error of the definition which was then almost generally received, as if they were hives of polypi ; he demonstrated their trunk to be itself a living substance, a sort of animal tree with several branches and heads ; a compound animal, the stony part of which is only the common skeleton, which grows at the same time as the indivi- dual animals, but is not fabricated by them. Linnaeus was the first to support these bold ideas, which are now universally re- ceived *. The Miscellanea Zoologica, which Pallas published the same year as his Elenchus, added still more to his reputation. So young an author was seen with astonishment, uniting in himself all the merits of the great masters who then divided among them the empire of science ; boldly assuming as his models the great French naturalist and his fellow-labourer Daubenton ; taking upon himself their conjoined labour, and, without allowing him- self to be swayed by their authority, combining, with the pro- found sagacity of the one, and the patient accuracy of the other, those methodical and strict views condemned by both. But what would have excited still more astonishment, had the public mind at this period been capable of estimating it, was the sudden light which he threw upon the least known classes of the animal kingdom, those which were confounded under the common name of Worms. Not allowing himself to be imposed upon by the errors of Linnaeus, any more than by those of Buf- fon, he shewed that the presence or absence of a shell cannot afford the true basis of their distribution, but that the analogy of their structure ought to be first consulted ; that, in this re- spect, the ascidiae, and not the tethyses, as Linnaeus imagined, are the true analogies of the bivalves ; that the teredo, as Adanson had already shewn, ought also to be united with them ; that the univalves, on the contrary, are more allied to the slugs, the do- rises and scyllaeae ; lastly, that the aphroditae, of the anatomy of which he at the same time gave an excellent account, ought to be placed near the nereides, the serpulae, and other articulated vermes, whether these possessed shells or not. • The Elenchus Zoophytorum has been translated into Dutch by Boddart, and into German by Wilkens. Herbst has published the latter translation with additions and plates. Nuremberg, 1787? 4to. Biographical Memoir of Peter Simon Pallas, 9X1 Assuredly the naturalist whose first glance was so penetrating, would have cleared up the chaos in which these invertebrate animals were enveloped, had he continued to pursue the inves- '■ ligation ; but unfortunately, he published his ideas before they were sufficiently matured. He did not separate the sepiae from the slugs so much as they should be separated ; he imagined the medusae to have an affi- nity to these two genera which they do not possess ; he admitted also an affinity, which does not exist, between the bivalves and the echinodermata ; and, lastly, he associated with these latter, on the one hand, the actiniae, which are zoophytes ; and, on the other, the sea-acorns or balani, which are much more closely al- lied to the bivalves. These errors, which a little more examination would have en- abled him to have avoided, contributed, perhaps, to reserve for other times a necessary revolution in the track to which he was ad- vancing, — so much are the conquests of mind, like other con- quests, subject to be arrested by the smallest accident. The most astonishing circumstance is, that he himself should have over- looked these beautiful perceptions. Having returned to Berlin in 1767, he reprinted, with many additions, his Miscellanea, under the title of Spicilegia Zoologica, and omitted unquestionably the most valuable memoir of the first collection ; nor did he ever again turn his mind to the subject. These two works spread wide the reputation of Pallas, and various governments made proposals to him. Perhaps he would have preferred his own, had he received the least encouragement from it; but, as too often happens, it was in his own country that his value was least appreciated. When thus under the ne- cessity of quitting his native land, he did not hesitate what other to select. The country which presented a newer field to his re- searches was preferred, and he accepted a place which was of- fered him by Catherine II. in the Academy of Petersburg. The Russian Empire, in the ninth century, the period at which history begins to speak of it, already almost extended from the Baltic to the Euxine Sea. Its existence was first an- nounced to Europe by its bold enterprises against the Turkish Empire. Being soon converted to Christianity, its sovereigns allied themselves with the Kings of France, and entered into po- ^18 Biographical Memoir of Peter Simon Pallas- litical relations with the other potentates. An imprudent divi- sion gave rise to discord in their states, their best provinces were conquered by the Poles, and they themselves became tributary to the Tartars for three centuries. They at length cast off this yoke, and became conquerors in their turn ; but, during their subjection, literature and civilization had reappeared in Europe, and Russia, at hey restoration to freedom, found herself a.X an immense distance behind the other christian states. The first English who landed there, in the sixteenth century, considered it almost as a new discovery. Peter the Great made astonishing efforts to introduce into it the customs and knowledge of Europe. After passing through all the ranks, to habituate his great no- bles to military subordination, after working as a carpenter, in order to form a marine, he wished to be admitted as a member of the Academy of Science of Paris, for the purpose of inspiring his people with a taste for instruction ; but, in the accomplish- ment of these objects, his success was not equal : The army was promptly subjected to the German mode of discipline ; the covirt quickly assumed the French manners ; while, to have an aca- demy, it was necessary to bring its members entirely from other countries, and to keep it up for a long time by recruits from them. Germany, where the numerous cities and universities pro- duced in some measure a superabundance of instruction, con- stantly supplied these deficiencies, and many of her most illus- trious literati found in Russia a fortune, and means of prosec^v- ting their favourite pursuits, which, perhaps, they could not have enjoyed in their own country. It was thus that Bernoulli, Bayer, Euler, Gmelin, Miiller, Amman, I.owitz, Duvernoy, gave to Europe that beautiful series of labours, under the titk of the Memoirs of the Academy of Petersburg ; it was thus that they laid open to us, in all its relations, the immense territory of Russia, and, it may be said, made it known to the Russian Go- vernment itself. In fact, no sooner had the Grand Dukes of Russia obtained possession of the throne and title of the Czars of Tartary, tibeir ancient sovereigns, than some enterprising adventurers pushed their way toward the East. The most prudent settled among the mountains rich in ores of every description, which form the Biographical Memoir of Peter Simon Pallas. 219 true boundary of Europe and Asia ; while others attacked the only remaining princedom of any consequence that existed in these barbarous regions, and delivered up his states to their Czar. As soon as the Russians had gained a footing on the Irtisch and Oby, their inquiries after furs and mines drew them farther on ; by degrees they imposed some tributes upon the wandering tribes of those vast solitudes ; — and thus, in less than a century, established that strange empire which, in its extreme limits, touches America, Japan and China, and in which a few thou- sands of soldiers are sufficient to guard 1500 leagues of coun- try. But to enjoy in reality the possession of such a territory, it was necessary to become properly acquainted with its nature and resources, and, after having conquered it, it became expedient to commence its real discovery. To the genius of Peter the Great this task also was reserved. He was the first European monarch to whom the glory belongs of having conceived those purely scientific expeditions, on a great scale, in which men possessed of various kinds of know- ledge, and aiding each other in their labours, examine a coun- try in all its relations, expeditions of which antiquity presents some examples, but which France and England carried to their greatest perfection at the end of the last century, by limiting their objects solely to that of enlightening Europe, and present- ing to savage man some of the advantages of civilization. Hence, Messerchmidtof Dantzic traversed the whole of Sibe- ria, between the years 1720 and 1725; and brought back an immense collection of observations ; but the death of the Czar proved fatal to his prospects, his labours were neglected, and he died in misery. In 1738, the Empress Anne Iwanowna, niece of Peter the Great, who displayed on the throne a charactefT^- very different from that which those who caused her to mount it imagined her to possess, resumed the projects of her uncle. A more numerous commission, which lasted ten years, procu- red for natural history the excellent memoirs of Steller, and those of John George Gmelin, the head of a more numerous fa- mily, and not less celebrated in that science than the BernouUis were in mathematics. The troubles which followed the death of Anne, and the ne^ 220 Biographical Memoir of Peter Simon Pallas. gleet and discouragement which foreigners met with in the reign of Elizabeth, occasioned these first attempts to be lost sight of; but Catherine 11, who had in view to make the path by which she came to the throne forgotten, amid the glory of every kind with which she invested herself, could not overlook so efficacious a means. Besides, her attention was roused to this object by a particular circumstance. At the time of the first transit of Venus, in 1 763, France had sent the Abbe Chappe d'Auteroche to Tobolsk, in order to make astronomical observations. On his return he published a narrative, the sarcastic tone of which so irritated the Em- press, that it is said she took the trouble of refuting it herself. She was therefore unwilling that foreigners should undertake the observation of the second transit, which was to take place in 1769 > and, in selecting for this object astronomers from her own academy, she judged it necessary to send along with them naturalists capable of examining the country. Pallas had the good fortune to see himself appointed to take a part in this undertaking. Good fortune I call it, because he looked upon this appointment as such. A distant jour- ney cannot fail to be attractive to a young man, and more espe- cially to a young naturalist; and this desire of searching for new productions has probably deprived us of many discoveries of the mind. Pallas himself furnishes a proof of this ; for al- though endowed with an activity that knew no limits, and less exposed than any one to allow himself to be distracted from his meditations by fatigue, it cannot by any means be doubted that he would have rendered more benefit to science by his ge- nius than by his journeys. He displayed in a striking manner the union of these two qua- lities during the space of about a year that he remained at Peters- burg. In the midst of all the preparations for so great a journey, he digested several new writings *, and gave to the Academy his famous memoir on the bones of large quadrupeds that are found in such abundance in Siberia, in which he shews that there oc- cur in that country elephants, rhinoceroses, buffaloes, and many Other southern genera, and that their quantity is almost incalcu- • Printed at Berlin during his journey from 1769 to 1774. Biographical Memoir of' Peter Simon PaUas. 221 lable * ; facts which first excited the attention of naturalists to these astonishing objects, and which laid the foundation of that beautiful superstructure which has since been reared. The expedition, however, after receiving its instructions from the Count Wladimir Orlof, president of the academy, set out in June 1768. It consisted of seven astronomers and geometri- cians, five. naturalists, and several students, who were to proceed in different directions over the immense territory which they were destined to traverse. Pallas, in particular, after traversing the plains of European Russia, and wintering, in 1769, at Simbirsk, on the Wolga, in the midst of the Tartar tribes, the ancient conquerors of the Russians, and now in a great measure agriculturists, stopped at Oremburg on the Jaik, the rendezvous of those still nomadic hordes, which wander in the salt deserts, to the north of the Caspian Sea, and of the caravans which carry on the trade be- tween India and Europe. Descending from the Jaik, he remained for some time at Gouriel on the Caspian, and observed with care the nature of that great lake, which, according to him, was formerly of much greater extent, and whose ancient banks are still to be recognis- ed at a great distance toward the north and north-west. The year 1770 was employed in visiting the two sides of the Uralian Mountains, and the numerous iron mines which are wrought in them. It is here that Russian adventurers have ac- quired, in a few generations, fortunes which have put them on a level with the greatest nobles of Europe. After visiting Tobolsk, the capital of Siberia, Pallas wintered at Tcheliabinsk, in the centre of the more important of these mines. From this place he proceeded in the spring of 1772, to ano- ther district, rich in mines, viz. the government of Koliwan, which is situated on the northern slope of the Altain Moun- tains, a great chain which extends from east to west, and which, by repelling the winds from the south, renders the climate of Si- beria much colder than might be expected from its latitude. In these mines many traces of old workings are found, which • Nov. Comm. Petrop. xili. 222 Biographical Memoir of Peter Simon Pallas. Bailly attributes to the ancient northern tribes, in liis opinion the first inventors of the arts and sciences. Pallas proves, on the contrary, that these works were carried on by the ancestors of the Hungarians of the present day, who, it is known, derive their origin from a nation that arrived in these countries in the seventh or eighth century. This journey terminated at Krasno- yarsk on the Jenissei. The year after, our traveller, always proceeding eastward, crossed the great Baikal Lake, and passed through the moun- tainous country, known by the name of Daouria, which extends to the Chinese frontiers. It was only here that he began to ob- serve the productions of nature, to assume an appearance entire- ly different from those of Europe. The plants exhibit singular forms ; animals of genera unknown to us, clamber among the rocks, or sometimes straggle thither from the great deserts of cen- tral Asia. Pallas, after viewing a multitude of half savage tribes, at length came once more upon a civilized nation, the civilization ol which, however, in none of its forms resembles that of Europe. He could not help considering the Chinese as a race which has been separated from us, at least since the last catastrophe of the globe, and which has followed in its development an entirely isolated course. After retracing nearly his former steps, and passing the win- ter a second time at Krasnojarsk, our traveller returned in 1,773, to the Jaik an^ the Caspian Sea, visited Astracan, and examined the Indians, the Buchanans, and the other inhabi- tants of the centre and south of Asia, who were mingled with the heterogeneous population of that city. He approached the Caucasian chain, the native country of the white race of men, as the mountains of Daouria appear to be of the yellow race, passed another winter at the foot of the branch of mountains which se- parates the Wolga from the Tanais, and at length returned to Petersburg, on the 30th July 1774. While thus pursuing the^principal route, he sent off in various directions pupils who were under his direction. Pallas employed the leisure of his winter quarters m drawing up his journal ; and , according to the plan prescribed by the Biographical Memoir of Peter Simon Pallas. 2S3 Count OrlofF, he sent it every year to Petersburg, where its vo- lumes were successively published *. It may be conceived that, labouring in this hurried manner, and destitute, in these solitudes, of books, and of every means of comparison, he would necessarily be exposed to fall into some mis- takes, would bring forward things already known, as if they were new, and would repeat the same things several times. We must (lUow, too, that he might have given more animation to his narra- tive, and presented the interesting objects of which he treats in a more prominent manner. His long and dry enumeration of mines and forges, his repeated list of common plants which he gathered, or of ordinary birds which he saw passing, do not form agreeable reading. He does not transport his reader along with him ; he does not place, as it were, before his eyes, by the power of his style, as more happy travellers have done, the grand scenes of nature, or the singular manners which he witnessed ; but it will undoubtedly be allowed in excuse, that the circumstances under which he wrote, were not of the most inspiring description. Winterc Y' ( 237 ) Observations on the Large Brown Hornet of New South Wales, with reference to Instinct. By the Rev. John M*Garvie, A.M. In a Letter to James Dunlop, Esq. Paramatta*. JL/URING occasional hours of relaxation from more import- ant engagemeilts, I have amused myself of late in studying the habits and history of the large brown and black hornets of this country, which I know you have also done wUh much success. But as my views on the subject do not entirely coincide with yours, I cannot permit this, perhaps the last opportunity for many months, to escape without making a few remarks upon it, especially as the excellent microscope I received from you (a present of inestimable value in this country), will enable me to prosecute the subject with more precision than I have yet been able to accomplish. There are few subjects that have occasioned more discussion to the naturalist and the moralist than instinct. The one, desirous of resting his knowledge on a few mechanical principles, is unwil- ling to admit instinct as a direct operating agent in animals, and particularly in insects, if any cause can be discovered that will account, even imperfectly, for their operations. The moralist, on the other hand, assigns to instinct every thing that indicates an ultimate design, though it cannot be a question with any man, that the same veneration for the Author of Nature would be excited, were every act of instinct reduced to the commonest laws of matter and motion. For He who implanted instinct, on the common view of the matter, must have implanted also the power of acting in conformity to known laws ; and these actions, of coui-se, become infallible proofs, that the laws which -these individuals follow in their operation, existed before the indivi- duals themselves ; giving thus a proof, if any were wanting, that both were created by the same beneficent hand. Instinct, therefore, we conceive, should always be considered as assisted or modelled by organic structure. Of all the works of instinct, none have excited more sur- prise than those exhibited by Bees, Hornets, and other creatures of the same kind, which form their hexagonal cells with such • Read before the Wernerlan Natural History Society 12th January 1828. 288 Rev. J. Macgarvie on the Brown Hornet of regularity and skill, that the most expert artizan might in vain attempt to imitate or surpass them. Why is it they have cho- sen this best of all forms " stipare roscida mella,^ by which every atom of their labour becomes of use ? Why do they never de- viate from this rule ? Why have they never advanced in im- provement since the first of the race completed his primitive cell ? This, of itself, in place of leading us to assign the ef- fect to instinct, should lead us to ascribe it to the structure of the race, impelled by some principle beyond the reach of inves- tigation. Instinct implies a power of action for producing some effect, by mechanical means, without the agency of intelligence. To this view of instinct we are not disposed to object, if men do not stop at proximate causes ; for, whilst bodily conformation and structure may serve to attain certain ends, the principle from which these flow may still be denominated Instinct. The hornets of which we speak, are of several kinds. There is a small black species which forms a quadrangular cell, about a quarter of an inch in the side, and from which a number of young ones, to the amount of ten or twelve, may sometimes be taken, of a dry, hard, brittle structure and glossy aspect, with- out wings, and the head very indistinctly formed. This nest is often attached to the leaf of a wattle, or gum-tree, in which case it is often hid by the leaves. It is firmly attached to the leaf by a thin gluten. There is another very beautiful small nest, whose inmates we have not ascertained, but the form of which is more regular and surprising than that of the bee itself. It is six-sided, and the edges of the angles are formed into a rounded ridge. The nest of the large black and brown hornet is extremely curious. It is fastened to the branch of a tree, sometimes a peach-tree, and sometimes to the twigs of a low shrub, close to the ground, and hid by high grass, being attached by a small button-shaped protuberance of dry, tough, gummy matter, which is impervious to rain or moisture, and which is, when taken off, in scales similar to the scales of a fish, but of a very different structure. They work downwards for about an inch, and then- commence their cells, attaching the button of each cell to the stalk attached to the tree. They have sagacity enough to know New South Wales. 239 that, as the weight below increases, the stalk and button must also be increased above, which they may be seen augmenting with great perseverance. They then increase the number of the cells, making them nearly equal in length, which is generally one inch and a half or two inches. The surface next the tree, that is, the bottom of the cells (for the open end is always downmost, and they build downwards), is covered carefully over with a gummy substance of a silky aspect, but dry and brittle. The bottoms of the cells externally are distinct and circular. The button and stalk are of a pyramidal figure, very broad near the base, and contracting as they approach the upper end next the tree. At the bottom of each cell, and covered with a thin substance, like tissue-paper, is a dark brown substance, composed of parti* cles of wood comminuted, and similar to saw-dust. It certainly is not the young animal, but it may be stored up as food for it in its earliest stages of existence. Each cell is cemented to those next it by a hard glutinous matter, which may be obtained i|^ considerable quantities near the bottom of the cells, as they are all tapering below, and wide above, and the interstices are filled with this substance, by which they are joined to one another, and to the covering that spreads out from the stalk, by which it is fastened to the tree. The nests themselves are rounded be- low, and circular horizontally. The cells are not always exactly hexagonal ; they are, however, placed in very distinct rows, but they are neither so elegantly formed as the cells of bees, nor dp they contain any liquid, nor is any use made of their contents. The cells are about two-fifths of an inch diameter, of different lengths, and the breadth of the whole nest is seldom more than that of the crown of a hat. The insects connected with one nest are not numerous, sometimes amounting to twelve or twenty, sometimes to a few more. When the cells arc formed, they seem to take great plea- sure in going over them in succession, pushing their heads into the cells, and adding small portions to them by means of their long tongues, palpi, and forceps. They hatch their young in these ; and, when the young animal is in the cell, they close the mouth of it with the fine tissue-paper like substance, of which the sides of the cells arc composed. ,, ^ 240 Rev. J. Macgarvie on the Brown Hornet of The stings of these insects are extremely painful, causing a fulness and deadness of the place affected, that is almost intoler- able. Their sight is sharp and quick. They fly directly to the face. One man was stung, not long ago, in the centre of the eye. They attack the cattle in the field, which are terrified for them, except the pig, which is blessed with a happy insensi- bility to all their attacks, as he merely shakes his sides and his tail, and continues to eat peaches as before. This insect has a beautiful appearance in the living state, having a number of yellowish-brown segments, on a black ground, around his body ; his legs and wings being of the same colour ; a fine yellowish colour presents itself on each shoulder, at the root of the wings, and there is a yellow stripe on the forehead. The rest of the body is a beautiful velvet-black, and the tips of the wings are tinged with a light purple colour. It has six legs, the two first of which it uses with great dexterity as hands. They may be seen frequently rubbing them, and thrust- ing their foot into their mouth, to besmear it with an unctuous substance, which may enable it to seize a firmer hold of its ob- ject. It is from the structure of the fore-legs, which are admirably adapted for the purpose, that, in my opinion, the hexagonal cells derive their character of regularity. When the sun is hot, you may see the insect traversing round his cell, seizing the edge of it in his mouth, and adding a small piece to the sides. When he has done this, he sets his body close to a side, and clasping the cell firmly in his fore-arms, he continues rubbing it upwards and downwards for a considerable time ; and as one cell is al- ways a little higher than the one next it, he proceeds thus from side to side, and gives a six-sided form simply by rubbing and working upon the soft materials with his arms. A very little attention will shew, too, that he can give it no other form than this or the circle. For his arms are so constructed, that if he acts uniformly upon any of these sides or angles, as we have repeatedly seen him do, he must form a hexagonal figure, if the materials are pliant. The arms are first composed of a joint near the body, ex- tending a little outward, and moveable in every direction. To this is attached the arm, which is smooth, and somewhat power- New South Wales. 241 fill. Next this is the fore-arm, and next it are the feet, which have three hooks, a small one on each side, and a larger in front Between each of these is a powerful joint, and they are confined to a large angle, as they cannot be extended into a straight line. When the animal, therefore, has made the sides of his cell in a circular shape by the gluten from his mouth, and a quan- tity of pipe-clay, which he frequently em- ploys in the building of it, he applies his body to it, and, placing the fore-arms around it, at an angle most convenient for itself, he continues to rub up and down till the shape has been given to the cell. The first angle is formed by the body and the arm ; the second by the arm and fore-arm, and the third on each side by the angles formed by the fore-arm, and the feet or claws*. In proof of this, it may be remarked, that the bottom of the cells is round, and the hexagonal form does not commence till the cell has attained a sufficient height to admit of the applica- tion of the animaPs body and legs to the outside of the cell, after which, to the top of the cell, the hexagonal form is remarkably distinct. Besides, to leave no doubt about the matter, we have measured the legs of a full grown hornet, and then applied them to the sides of the cells, and out of 160 cells in one nest, found only half a dozen near the outside that did not correspond exactly with the length of the arm or fore-arm, and these were probably injured or dried up. In this respect, therefore, I think, that instinct may be pushed one step farther back from the demesnes of philosophy, since this very complicated and regular exhibition of animal sagacity may be accounted for from the organic structure and formation of the animal. The wonder still remains, why it should have been constituted with such powers. But this wonder is in common with that of every thing around us ; and is continually excited in examining the wonders of the lower creation, especially in ento- mology, which, in this country, above all others, would require • The figure is considerably larger than nature. 242 Rev. J. Macgarvie on the Brown Hornet the united energies of a score of naturalists for many years. Its treasures are inexhaustible, and are almost entirely unknown. When, upon this subject, allow me to allude to a circumstance connected with the beautiful Atropus Belladonna. This butter- fly, in the state of a grub, as it is here called, forms a pyra- midal and sometimes a circular nest of small twigs, which it may be seen occasionally dragging up a tree, by short and easy stages. This is the case with the same insect when very small ; but in both stages, it may be seen moving about its head before it commences its journey, and stopping at regular intervals as if to reconnoitre. One unacquainted with its natural history, might suppose it was apprehensive of danger. But the fact is, that when it moves its head from side to side, it is spinning for itself a thread, which it fixes to the tree, and, when it is strong enough, it stretches out its fore claws, seizes hold of the thread, and raises itself upward, on the principle of the common rope-ladder. When you examine its path attentively, you see these steps placed at the most regular distances, as regular as if made by the hand of art, and intertwined in such a way, that if one should break, the next will keep the animal up This is cer- tainly instinct in one sense, but is common mechanics in another. For the animal seizes hold of the thread by the second pair of feet, stretches his head upwards, and makes the distance between the two steps of the ladder precisely that of the distance between his mouth and his second pair of arms, which is exactly one-fifth of an inch in a common sized animal. We have watched him ascending a smooth surface by this means, when it would have been thought impossible to raise a large circular cylindrical nest with so much dispatch on such a surface. Such paths you have probably yourself seen long ago. Ascribing effects to instinct, therefore, is a great source of error in natural history, and should not be resorted to, except in those cases in which no rational account can be given of the effect ^e contemplate ; for if men were to stop short at second causes, every effect in nature might be denominated instinctive. The best possible means have been always adopted to produce the best possible ends. It is the business of philosophy to discover the latter, and trace them by that means to the grand intelli- gent source whence they originated. I am, &c. ( 243 ) Analysis of the GU-i-toorsch, or Sour Clay, used in acidulating^ Sherbet, in Persia, By Edwaed Tuener, M. D. F. R. S. E. Professor of Chemistry in the University of London. Com- municated by the Author. V-lUR intelligent young friend, and former pupil, Lieute- nant Alexander, in his lately published Travels from India to England, a work highly creditable to him as a writer and observer, says, " The road to Dalkec is exceedingly stony; and, at eight miles from it, is a capital sporting tract, with a date jungle and swamp on the left. We were here assailed by an insufferable sulphureous effluvium, shortly after we crossed, from several naphtha and sulphureous streams, which issued from the hills, round the bases of which the road winds. At the fountain head the water is lukewarm. The streams have, on their mar- gin, a whitish-grey earth, which is of an acid and saltish taste ; it is termed Gil-i-toorscJt, or Sour Clay. The taste is probably occasioned by a mixture of alum and sal ammoniac. It is used in acidulating sherbet. I brought away a small quantity of this substance for my esteemed preceptor Professor Jameson *.''' Some time ago, the specimen of gil-i-toorsch was sent to me by Lieutenant Alexander. I requested my friend Dr Turner to analyze it, and the following is the Doctor''s report : — " The gil-i- toorsh consists partly of a coarse earthy powder, and partly of ir- regular grains, of about the size of a pea. The interior of the lat- ter is of a white colour, as described by Mr Alexander, but the surface of the particles is brown. This colour is owing to iron ; for the earth has been kept in a vessel of tinned iron, which is strongly corroded. The earth is slightly moist, and has a sour and inky taste. With distilled water, it yields a solution con- taining a considerable quantity of free sulphuric acid and suL phate of iron. With nitrate of silver, it gives scarcely a trace of muriatic acid, and it is almost equally free from alumina. It does not, therefore, contain either sal ammoniac or alum. By the action of pure potash, a trace of ammonia was detected. The earthy matter contains some silica ; but its chief constituent, es- pecially of the larger grains, is sulphate of lime, some of which • Travels from India to England, comprehending a visit to the Birman empire, by James E. Alexander, Lieutenant in his Majesty's 13th Light Dra- goons. 4to. Parry & Allen, London 1827. 244 Mr Ramage on the Excavations made at Pompeii is distinctly crystalline. It emits a faint but distinct odour of sulphur, when moderately heated. Considering the use to which the gil-i-toorsch is applied, I presume all the iron found in the specimen sent to me, must be derived from the box which con- tained it. I therefore infer, that it consisted originally of sul- phate of lime, with a little siliceous matter, acidulated by free sulphuric acid. This acid can scarcely have originated in the de- composition of metallic sulphurets, but must, I apprehend, have been derived from the combustion of sulphur. The sulphureous vapour noticed in the vicinity of the earth, confirms this opi- nion." Account of Excavations made at Pompeii from December 1826 to August 1827. By T. C, Ramage, Esq. Communicated by the Author. -I T was in the autumn of 1825 that I first paid a visit to Pom- peii, and the impression it then made on my mind was by no means equal to what I had expected. I returned, however, se- veral times, and found that every examination only increased my desire to investigate it more minutely. You are aware that Pompeii is about fourteen miles from Naples, and five from the crater of Vesuvius. Through it ran the Via Consularis, a branch of the Via Appia, which, striking off from Capua, passed through Naples and Pompeii to Solerno. On entering the suburbs you set your foot on this ancient road, which, like all the other Ro- man ways, is composed of large unhewn blocks of stone. In Pompeii the pavement has been composed of lava, and shews that Vesuvius must have been a volcanic mountain in some early period of the world, though history has left us no account of it. Alighting at the barrier, where a guard is placed, you enter its suburbs, which have been called Augustus Fehx, and appear to have been founded by the colonies of Sylla and Augustus, whose names have been discovered on many of the monuments. One single villa has been completely excavated, and many others no doubt surround it, which will hereafter be exposed to view. The first coup d'^oeil is remarkably striking, and well fitted to make an impression on the mind ; you see at once the whole length of the street, which is lined on both sides by frmi December 1826 to August 1827. 245 tombs, some entire, and some in ruins. They are chaste in de- coration, classical in design, and prove that they must have been erected before the taste of the Romans had become corrupted by the love of magnificence and grandeur, which they carried even to the grave. There rest whole families in eternal repose, as if they were still enjoying themselves around their Penates, and solemnising some of those annual ceremonies in which all took a part. The mother is there stretched at the side of the father, and the children, according to their several ages, in re- gular order beside the mother. Some of the tombs are most magnificent, and have been erect- ed by a grateful country to citizens whose merits had entitled them to such a distinction ; they are adorned with the palm and the laurel, and present the elegant forms of the lectisternium and bisellium. These nol>le monuments may be considered as al- tars erected by the Genius of Arts to the honour of Mystery and Death. It was here that the inhabitants enjoyed themselves at even under the shade of the cypress, which waved its mournful head over the tombs of their ancestors ; it was here that they caught those genial breezes, which were so grateful after the heats of the day. What a strange contrast must their games, diver- sions, and tumultuous joy, have formed to the calm and silence which reigned in the graves where slept those who had once been as gay and as merry as themselves ! But as you have most probably seen a detailed account of the discoveries made previous to December 1826, I proceed now to give a short view of the progress that has been lately made in disinterring the ancient city of Pompeii from December 1826 to August 1827. At present there is every appearance that we have at last ad- vanced to a part of the town occupied by the more opulent class of citizens, and we are in hope of making some valuable acquisitions to our stock of antiquities. The streets have be- come more spacious, and the houses begin to have an air of splen- dour and neatness, far exceeding that of the houses situated along the sea coast. Indeed, as we know that the shops and taverns must have been in the vicinity of the Forum and public JANUARY MARCH 1828. H 1146 Mr Ramage on the Excavations made at Pompeii buildings, and as these are almost the only edifices that have been as yet uncovered, we may conclude that the private villas are still concealed from our view. The articles that have been found in these houses are generally superior, both in richness of material and beauty of workmanship, to any that the Royal Museum has yet acquired, and display in a very remarkable manner the labour and ingenuity bestowed by the Romans even on their commonest utensils. The excavations have taken place principally in two direc- tions, — in that street which is called the Street of the Arch, and towards the angle of the Forum, opposite the Basilica. In the winding lane which leads to the portico of the theatre, there have been several small houses excavated, exhibiting a consi- derable degree of ingenuity in the just arrangement, and agree- able union of all parts of the edifice, and a most extraordinary economy in the employment of ground. It may indeed be af- firmed of them, what Pomponius Atticus said of some old houses he possessed in Rome, that there had been more ingenuity than money expended in their erection. One cannot help admiring the solidity with which many parts have been built, and the beauty of the opiis reticulatum, which is equal even to the ce- lebrated specimens of this sort of work in the gardens of Sallust at Rome. Here also, were found several Ionic chapters, of a style purely Grecian, which you know is a very unusual occur- rence in Pompeii. Their volute resembles the calyx of a flower, attached to its stem, which, turning downwards at the point, where the junction of the volute takes place, winds round the higher part of the shaft of the pillar, — an elegant device, quite new to us. In the street of the Arch, the houses are larger and more splendid. One of them has its front decorated with representa- tions of baskets, carved in a greyish coloured volcanic tufa, called by the Italians Tufo of Nocera, from the quarries being discovered in the vicinity of that town. These baskets, exhi- biting great accuracy of outline, are still in some parts covered with the stucco, which had been applied to them to furnish moulds for others intended to imitate the tufa. The cornice, formed of the same material, is lying on the ground, and fur- nishes a beautiful specimen of elegance in architectural disposi- from December 1826 to August 1827. 247 tion. On entering this house, we look across the atrium ^nd the summer parlour. At the bottom of the peristylium, there is a fountain encrusted with shells and glass mosaic, similar to the one excavated some time ago. Near the outer door there is a small staircase, leading to the upper storey, or rather to the roof, as its diminutive size prevents us from supposing the ar- chitect could intend it for any nobler purpose. The atrium is Tuscan, painted grotesquely with little flying figures on a red ground : among them the most remarkable are the figure of a winged female, with a garland of flowers in one hand, and a young boy in her arms ; a little figure of a female in flowing drapery, with a palm branch in her hand ; and a harp-player seated at her instrument. In the summer parlour, enriched by a beautiful mosaic pavement, the walls are ornamented with a variety of fruit and richly plumed birds. The portico, fur- nished with only two rows of pillars, has on the opposite walls a representation of the same number of columns, corresponding with the real ones, and between them there are landscapes sketched with great spirit, and of a much larger size than any hitherto discovered. These are chiefly views taken on the sea- coast. On the left appears a large harbour, with several vessels at anchor : there is a building erected on a small island, united to the adjoining land by a singular bridge, which is approached by means of a stair, removeable like a draw-bridge. In front is seen a two-oared bark, with sails exactly similar to those used at present in the Bay of Naples. At the side of this there is a building constructed on some rocks in the middle of the water, with a fisherman seated, and in the act of drawing his net. Among many other sketches there is one of a man on horseback, followed by a large dog, and wearing a hat which bears a con- siderable resemblance to those pointed ones which the peasants of Campania have at present. In the centre of the colonnade opposite the door, there is a fountain, in the form of a small al- tar, with its niche and top richly decorated with mosaic and shells. In the middle of the semicircular basin of this fountain, there was found, on a round pedestal, a little winged boy of bronze, with one hand raised, and embracing with the other a goose, which was in the act of flapping with its wings, and ejecU ing a stream of water into the basin. Towards the centre of e2 248 Mr Ramage on the Excavations made at Pompeii, the niche there is in the wall a scenic mask, from the mouth of which flowed another jet of water ; and on the edge of the ba- sin there was found another statue of bronze, three palms high, representing a fisherman seated with a small basket of fish in one hand, and extending the other, in the act of raising the net. From a rock completely encrusted with shells, on which the fisherman is seated, another jet of water has evidently been thrown. The features of this little figure are strongly marked, and full of expression. Besides a Caryatides of marble, there was found another figure of the same material, representing a young fisherman asleep, and covered with a sailor''s mantle, such as is generally worn by the fishermen of the present day. The remains of the leaden pipes, with their stop-cocks, are plainly seen. In this house there was also discovered a beautiful marble table, of Greek workmanship. Many rich candelabra, bracelets, rings, ear-rings, and medals have been the reward of these excavations. But the most cu- rious discovery of all is that of two glass vases, one of which contained olives, with the oil in which they had been placed eighteen centuries before ; and the other nothing but pure oil. It may not be uninteresting to give the chemical analysis of these substances by Professor Covelli of Naples. Analysis hy Professor Covelli. The olives were found in a quadrangular glass vase, with a large mouth. The oily substance was inclosed in a cylindrical glass vase, with a narrow neck, and a small handle. Examination of the Olives. — The upper half of the vase con- taining the olives, was full of volcanic ashes and pebbles ; the olives, mixed with a kind of buttery substance, occupied the lower half. They have the form and size of that variety com- monly called Spanish Olives ; some of them have even still their pedunculus or flower-stalk. The kernels are less oblong than those of the Neapolitan species, and also more swollen ; the lon- gitudinal streaks are more strongly marked. Their colour is black, but mixed with small particles of a greenish matter, which, with the aid of a powerful lens, it was discovered were those lichens produced on organic substances in a state of putre- faction ; but these little plants were not observable at the mo- from December 1826 to Av^st 1827. 249 ment of their discovery, and have no doubt arisen from the ac- tion of the air, which in a few hours had produced such an al- teration in their superficies, as had not been accomplished by the influence of so many centuries. This is a proof that these olives, gathered eighteen centuries before by the subjects of Ti- tus, are as fresh and sweet as those produced by Francis I. Indeed, these ancient olives are still soft and pulpy ; they have a strong rancid smell, a greasy taste, and leave upon the tongue an astringent and sharp sensation. They are so light, that they swim upon water ; the pericardium or seed-vessel shews still its organic texture, though the parenchyma is in that state of alte- ration which the maceration of a few months usually produces. The kernels are still hard, and so much so that a knife can scarcely penetrate them. The oily part of the parenchyma, though in very small quantities, when analysed carefully in the usual method, has been found to be changed entirely into oleic and margaric acids, which are the fundamental principles of the fixed oils, acidified by oxygen, and form the basis of our soaps. These changes happen generally in oils exposed for some time to the air. This proves that the action of eighteen centuries, which has left untouched the fundamental principles of the oil, has effected no greater change than what is produced by a few months. The kind of oily substance in which the olives are enveloped, is of a brownish-yellow colour, soft like butter, has a strong rancid smell, soils paper like fixed oils and greasy substances, is melted by a moderate heat (60° or 70° cent.) warmed on a leaf of platina ; it burns with a beautiful white flame, without leaving any thing but small white flaky ashes, so light that the smallest puff disperses them. With the alkalies it forms soap ; distilled in close vessels, it gives out carburetted hydrogen gas, acetic acid, carbonic acid, carbonic acid gas, and a residue of carbon. This buttery substance, tried by CheuvreuPs method, is found to be composed of oleic acid in large quantities, a small portion of margaric acid, and a substance analogous to the sweet principle of fixed oils, but which differs in many respects, and \ihich may be a new production ; and, lastly, an earthy sub- stance, in very small quantities, arising from the volcanic ashes which filled the upper half of the vase. 250 Mr Ramage on ike Excavations made at Pmnpeii. Examination of the Buttery Substance found in the narroxo- necked Fa^^.— This substance is much softer than the prece- ding : it has a yellowish-green colour, has a strong rancid smell, and exhibits in the mass a number of brown globules, similar to the spawn of fish, but which cannot be made out even by a power- ful lens. This substance resembles that found with the olives : it is composed of the same principles, though it may contain a larger quantity of oleic acid, and of that unknown substance analogous to the sweet principle of fixed oils. It appears, in- deed, to have been nothing else but the oil of olives, containing some vegetable salt. Sketch of the Natural History of the Salmo Salar, or Com- mon Salmon. 1. Of the Process of Spawning, and sub- sequent evolution of the ova ; 2. Of the growth and move- merits of the Young Brood, to and from the sea during the first year of life ; and, 3. Of the migrations of the Salmon betwixt the River and the Sea. By Daniel Ellis, Esq. F.R.S.E., &c.* !^INCE the year 1824, a Committee of the House of Com- mons has been employed, during several sessions, in making in- quiries into the present state of the salmon fisheries through the United Kingdom. The Committee, in a great degree, origina- ted from numerous petitions presented to the House from Scot- land. To gain the necessary information, they, in the first place, prepared and distributed certain queries regai;ding the present state of the fisheries in the several rivers, estuaries, and adjacent seas ; the laws, usages, or regulations acted on, or applicable to these fisheries ; the extent to which the law is or can be enforced, and the customs and practices which oppose or counteract it ; the modes of salmon-fishing now in use ; and the actual day on which it commences and ceases in each fishery ; at what periods of the year it ought to commence and cease, so as to obtain the greatest supply of good salmon, and preserve most effectually the breed ; whether these periods should be the same for all • Drawn up from the evidence contained in two Reports of a " Select Com- mittee of the House of Commons, on the Salmon Fisheries of the United King- dom." Ordered by the House to be printed in 1824 and 1825. Mr D. Ellis on the Natural Historic of the Salmon, 251 rivers, estuaries, &c. or should vary in different i-ivers; and, lastly, what regulations can best provide for the safety of the parent fish during the breeding season ; protect the spawn after its deposition ; and finally secure the descent of the young fry down the rivers to the sea. The answers returned to these queries enabled the Committee to summon before them persons from all parts of the kingdom, the best qualified to give the desired information ; and the evi- dence collected is contained in the above mentioned ReportsL This evidence goes to prove, that the productiveness of the sal- mon fisheries has decreased, and is decreasing, in almost all the rivers in the United Kingdom ; but that this decrease arises^ not so much from any changes in the habits of the fish, or in the condition and circumstances of our rivers, as from the operation of injudicious laws in relation both to the times and modes of fishing ; from the prevalence of most destructive practices, and incredible abuses in almost all our rivers ; and from the indul- gence of a too greedy spirit of gain, which, instead of waiting for the natural production of the golden egg, cuts up at once the animal that can only daily produce it. The facts brought out in these Reports, respecting the natural history of the sal- mon, particularly as regards the propagation of the race, their rate of growth, and their several migrations between the rivers and the sea, are far more complete than any we before possessed ; and, as they are not only curious in themselves, but of the ut- most importance in any legislative measures that may be adopt- ed for the future regulation of the salmon fisheries, I have thought that the collection and arrangement of them would form no unsuitable article for the Philosophical Journal, and per- haps prove acceptable to many of your general readers Naturalists enumerate several species of the genus Salmo, of which a distinguished zoologist, Dr Fleming, mentions seven as met with in the estuary of the Tay *. These are, 1. Salmo salar, or Common Salmon. 2. Salmo hucho, or Bull Trout. 3. Salmo eriox, the Gray or Shewn. 4. Salmo trutta, or Sea Trout. 5. Salmo albus, the Whiteling or Finnock. 6. Salmo fario, or River Trout. 7. Salmo eperlanus, the Spirlin or Smelts • Report II. p. 63. 252 Mr D. Ellis an tJie Natural Histcyry of the Salmon. On the present occasion, it is proposed to speak only of the first species, viz. the Salino salar, or common salmon ; and this we shall do, by treating, \sty Of the process of spawning, and subsequent evolution of the ova ; 2J, Of the growth and move- ments of the young brood to and from the sea, during the first year of life ; and, 3tZ, Of the migrations of the salmon betwixt the river and the sea. Of the process of Spazoning, and subsequent evolution of the Ova. The salmon is a very prolific animal. Both the male and fe- male frequently propagate their kind during the first year of their age ; while the older fishes, which inhabit alternately the seas and lower parts of rivers during the winter and spring months, ascend to the higher parts of rivers in autumn to exer- cise the same function. Early in spring the milt, or repro- ductive organ, appears to be forming in the male and the roe in the female salmon, but both are then small in size ; they in- crease in each sex through the summer months, and towards autumn the male and female become respectively full of milt and roe. In proportion as these bodies advance to ripeness, the salmon fall off* in condition. Before the spawn is of great size, the belly of the fish, says Dr Fleming, is loaded with fat ; but when the milt and roe have become ripe, that fat has disappear- ed from the belly, and it is little else but skin. This change furnishes a test by which we may know whether a kippered salmon had been in good or bad condition at the time it was so prepared ; for the thinner the edges of the belly may be, the presumption is, that the nearer was the fish to a spawning state*. In a general way, the evidence obtained from all parts of the United Kingdom goes to prove that, towards the months of August, September, and October, the reproductive organs, both in the male and female salmon, have, more or less, completely reached maturity, at which period the roe in the female is found, on the average, to contain from 17,000 to 20,000 ova or eggs. When arrived at this state, the instinct of propagation impels them eagerly to seek rivers, and to ascend nearly to their sources, jn order to find a place suitable for the deposition of their spawn. • Report II. p. 72. Mr D. Ellis on the Natural History oftlie Salman. 253 They no longer, as in the winter and spring months, roam over the coasts and shores, and return backwards and forwards with the flowing and ebbing of the tide, but pursue the most direct route by the mid-channel up the river, and make the greatest efforts to overcome every obstacle, either natural or artificial, that may impede or obstruct their course. " I have often seen them leap a fall, near my residence," says Sir G. S. Mackenzie, " of about 30 feet high, but they seldom spring out of the water , more than 8 or 10 feet. I have seen them leap over a dry rock of considerable height, and drop into the water behind it. After having entered a river, the object of salmon appears to be to push as far up towards the source as possible, in order that they may deposit their spawn in the small streams that form their sources ; and which, on account of their being near the springs which supply them, are neither so apt to run dry as the river lower down, where the effect of evaporation is greater, nor to be so affected by frost as to stop the water from running. The water is alw^s steadier in its temperature near the sources, varying little throughout the whole year; and these small streams are fitted peculiarly for vivifying the spawn, as they form a constant succession of rills, by which the water is kept fully saturated with air *."" It is not always, however, that the spawning fish are able to reach these sources, but are obliged to deposit their spawn in the shallow fords in the beds of rivers, and sometimes in the streamlets of mill-dams. The process of spawning itself has been observed with much accuracy by Mr Halliday in the river Annan in Scotland, and by Mr Little in the Bann in Ireland. It is principally accom- plished in the months of November^ December, and January. According to Mr Halliday, when the parent fishes have reach- ed the spawning ground, they proceed to the shallow water, generally in the morning, or at twilight in the evening, where they play round the ground two of them together. After a time they begin to make a furrow by working up the gravel with their noses rather against the stream, as a salmon cannot work with his head down the stream, for the water going then into his gills the wrong way, drowns him. When the furrow is made, the male and female retire to a little distance, one to the one • Report I. Apt)endix, p. 17. 25|f Mr D. Eliis ofi the Natural History of the Salmon, side and the other to the other side of tlie furrow : They then throw themselves on their sides, again come together, and, rub- bing against each other, both shed their spawn into the furrow at the same time. This process is not completed at once : It re- quires from 8 to \9> days for them to lay all their spawn, and when they have done they betake themselves to the pools to recruit themselves. He has seen three pairs on a spawning bed at one time, and stood «nd looked at them while making the furrow and laying the spawn *. The account given of the same process by Mr Little, agrees with that just stated. He observes that the spawning commen- ces in November in most rivers, and is continued through De- cember and January ; that, when a pair of salmon are about to spawn, they make a furrow in the shallow part or current of the water into which the spawn is deposited, so that they work - against the stream, increasing the number of furrows, until they have formed a bed of perhaps 12 feet by 8 or 10 ; the bed be- ing at first very little, but enlarging every d^y. He observed the salmon to go leisurely down the side of the bed, and, turn- ing round at the place where they had thrown up the gravel, come back to that point next the stream ; they then threw them- selves on their sides in the manner previously described, depo- siting their spawn in the furrow as they moved upward, and, at the same time, covering it over with the gravel as they went along. In this manner they continued working for several days till they completed their bed; and if it so happened that they were frightened, they would swim away, and in a little time re- turn to it again ; or, in some instances, would desert it alto- gether, and begin at another place -f. Dr Fleming has never himself seen the process of spawning so completely as to be able to describe it minutely ; but he is satisfied that the description given by Messrs Little and Halliday is accurate. Notwith- standing the number of eggs to be deposited, they must, he adds, be excluded one by one, which accounts for the long con- tinuance of the process ; and if, during the act of spawning, the male fish be destroyed, the female leaves the bed, and in the deep pools endeavours to find another male |. • Report I. p 61-2. f Ibid. I. p. 108. t Ibid II. p. 66. Mr D. Ellis a)i the Natural Histoid of the Salmon. ^siT In the statement of Mr Little, both the male and female fish are said to assist in forming the bed ; and Mr Halliday has often taken these fish, on their return to the sea, with the skin rubbed off below the jaws, of the size of a half-crown piece, occasioned by rubbing up the gravel and making furrows for the spawn *. At this particular period, the head of the male has been said to be furnished with a long hard bill on his under jaw, and which again decreases as the spawning season passes off. This bill or hook has been deemed by some an extra- ordinary provision of nature, to enable the male more effectually to aid in preparing the furrow destined to receive the spawn. But Dr Fleming says it is the under jaw itself of the male that is thus turned up ; that it appears to be a distinguishing mark of sex, and not produced by any mechanical means -f*. The spawn is, as we have said, deposited in furrows formed in the gravel, and is afterwards covered over with loose gravel, so as to resemble, says Mr Little, an onion bed in a garden. In this state the ova remain for weeks, or sometimes much longer, apparently inert, like seeds buried in the soil. The pe- riod at which the young fry begin to rise, depends much on the season of the year. They remain in the bed, says Mr Little, till some natural warmth comes into the river in the spring of the year. In an early spring the fry come forth early, and later when the spring is late. Generally they begin to rise from the bed about the beginning of March, and their first movement is usually completed by the middle of April. Mr Little has never himself seen the first appearance of the beds after evolu- tion has commenced, and previously to the fry quitting them ; but persons employed by him to protect the beds in the upper branches of the rivers, describe the young animals as rising from the beds like a crop of oats or thick braird of grain, rushing up in very great numbers. The tail first rises up, and the young animals often leave the bed with a portion of the investing mem- brane of the ovum about their heads J . Mr Halliday states also, that the fry generally come first into hfe from about the 10th of March to the 10th of April. They do not all, however, come into life exactly at one time, but nearly so, amd some appear to • Report I. p. 62. + Ibid II. p. 67- $ Ibid p. 100. S 256 Mr D. Ellis on the Natural Historic of the Salmcyn. be much larger than others. He, too, has seen them, when dis- engaged from the spawning beds, with a portion of the skin of the ovum sticking to their nose like a scale *. During the winter 1824, Mr Hogarth jun. observed fre- quently the spawning beds in the River Don, and had the spawn taken from them occasionally to examine the state it was in, and found it advancing gradually. The first particular change observed in the roe, was the appearance of two black specks. In this state, a portion of it was taken up and put into phial bottles ; and, by supplying these with frequent changes of fresh water, many of the ova came into life. The young ani- mals lived in the bottles, and appeared very vigorous for about three weeks, the water being frequently changed. After this, they became restless and uneasy, would not eat, and died when they had attained the length of an inch. He procured an artist to make sketches of the appearances exhibited by the ovum in the successive stages of its evolution, as represented in Plate III. When a portion of the roe was put into salt water, none of the ova ever came into life ; and when a young fish, that had been hatched in fresh water, was put into salt wa- ter, it shewed symptoms of uneasiness, and died in a few hours. Whence it is inferred, that the spawn of salmon, if deposited in the sea, would not be evolved ; neither would the young fish, in the earliest periods of its life, be able to exist there, -f* Sect. II. Of the Descent of the Fry to the Sea, and of their subsequent growth and movements. Having thus described the process of spawning, and traced the series of changes exhibited in the evolution of the ovum, we have next to follow the progressive movements of the young fry from the place of their birth in the river, to their arrival in the ocean. When their evolution is completed, and they have dis- engaged themselves from the spawning beds, they keep at first in the eddy pools till they gain strength, and then prepare to go down the river, keeping, says Mr Little, near to its sides, and proceeding on their way till they meet with the salt water, • Report I. p. 62. | Report II. p. 92. Mr D. Ellis an the Natural History of the Salmon. 257 when they disappear. * Whether the river be early or late, the descent of the fry is made much about the same time in all. It begins in the month of March, continues through April and part of May, and sometimes even to June, -f Mr Halliday also describes the fry as making towards the edges of the river soon after their birth, and keeping in the easy fresh water about its sides : afterwards, as they become stronger, they go more to- wards the mid-stream ; and, when the water is swelled by a lit- tle rain, they move gradually down the river. On meeting the tide, they remain for two or three days in that part where the water becomes a little brackish from the mixture of salt water, till their constitutions become inured to the change, when they go off to sea all at once, sinking down in the bed or channel in the middle J. From the end of March till the middle of May, he has seen them thus descending ; and, in particularly dry seasons, when no floods occur, they sometimes could not get down for want of water until the month of June §. That the young fry descend rivers at the times and in the manner above stated, is proved by the evidence of various wit- nesses, and more especially by Messrs Shepherd and Sime. To ascertain the precise course of their descent, both in rivers and in their estuaries, Messrs Shepherd and Sime were many years ago specially appointed, under legal authority, to exa- mine the river and estuary of the Tay, by going up the said estuary and river in the month of April, when the fry were de- scending, till they should find the fry, and see them distinctly making their way downwards. They accordingly proceeded up both sides of the Frith, from one end to the other, but could there meet with no salmon fry between high and low water mark. A little above a place called Carpow-bank, however, where the frith appears to begin, they met with the fry at the sides of the river, where they disappeared in the deep water, and where, with a small net, they caught many of them in the very middle of the channel. Above this point, and all the way upward to Perth, the fry were visible to the eye along the sides • Report I. p. 109. f Ibid. p. 62. t Ibid. p. 116. i Ibid. p. 63. ^58 Mr D. Eliis on the Natural History, qftlie Salvi&ri. of the river. * The reason why the fry thus descend by the margin in rivers, and by the mid-channel in estuaries, is appa- rently, says Dr Fleming, because the margin of the river is the easy water, and consequently best suited to their young and weak state : but when they reach the estuary or tideway, then the margin of the water being there most disturbed, the fry avoid it, and betake themselves to the deepest part of the channel, disappearing aUke from observation and capture, and so go out to sea. Hence they are never seen in the pools on the banks of the estuary, nor caught in any of the nets used there in taking the small fish -f*. The young fry, at this period of their growth, are called sometimes Smolts or Samlets. They are of very different size and weight, according to their age, varying from half an ounce to two or more ounces. As they are never seen or taken by salmon fishers after they enter the sea, it is probable, says Dr Fle- ming, that they go into deep water at a distance from the shore. After remaining some weeks in the sea, the samlet returns to the coasts and rivers, and is sometimes seen as early as May in some rivers, being then about a pound or a pound and a half ia weight ; in Scotland it is then termed a Grilse. The grilses seldom, says Mr Little, appear till nearly the middle of June, and weigh then from two to two and a half or three pounds, in» creasing in size half a pound a week. By the end of the fishing season, they weigh from seven to nine pounds j . In the river Severn, they are said to return from the sea towards the end of June or beginning of July, weighing then from two and a half to three pounds, rarely four pounds ; but by the end of August, says Mr Ellis, they have grown so large as to weigh from four to eight pounds §. At this stage of growth they are called Botchers ; of these, some of the larger ones go up the river to spawn ; others are considered to return to the sea, and come up again the next spring of the year |1 ; they then weigh from ten to fifteen pounds, when they take the name of Gillings. Many experienced fishers, examined by the Committee, con- sider the grilse as a fish altogether of a different species from the salmon, while others regard it as the samlet in its progress to • Report I. p. 93. + Ibid. p. 11 1, 1 12. % Ibid. § Ibid. II. Appen. p. 13. U Ibid. Mr D. Ellis oii the Natural History of the Sahtion. 259 form the salmon. At the commencement of the grilse season, only small ones are taken, which increase gradually to the weight of seven or ciglit pounds. Now, were the grilse a dis- tinct species, we might, says Dr Fleming, expect to meet with some of them the following year as old fish, weighing nine or ten pounds, whereas, we get them only of small size, from one and a half to two or more pounds *. To ascertain the fact by experiment, Mr G. Hogarth jun, in the month of May 1824, when the samlets were going down the river Don, caused a num- ber of them to be taken ^nd marked by cutting off the mort or dead fin. In the course of the month of July, several grilses were taken without that fin; whence he inferred, that they were some of the fishes he had previously marked. Not only did samlets thus become grilses in a few weeks, but, in the following year (1825), he got three salmon, marked in the same way, which he also considered to be some of those indi- viduals he had marked originally as samlets. Farther, in the month of September in the year 1824, he caught ten or twelve grilses, which were put into a salt water pond. Owing to some very high tides that season, some of these fish made their escape, but there were three still alive in May of the following year. These he had taken out and examined in the presence of many competent judges, who all were decidedly of opinion that they were real salmon, t These experiments con- firm the statements already made, proving not only the growth of the smolt or samlet into the giilse or botcher, but also that of the grilse into the gilHng or salmon of one year'^s growth. With respect to the subsequent growth of the salmon, it is con- sidered that, in the river Severn, the young sahnon, which, in the spring of the year, weighs from ten to fifteen pounds, has increas- ed, in the following months of December and January, to eighteen and twenty-five pounds, and in another year would attain the weight of thirty-five or forty pounds, which is as large as they are now ever taken in that river. It is not doubted, however, that if they escaped the nets of the fishers, they would grow to a still greater size, a salmon having heretofore been taken which weighed fifty-two pounds when out of season ; and which would doubtless have been of greater weight had he been taken while in the condition of a clean fish. In the river Lee in Ireland, • Report II. p. 92. f Report II. Appen. p. 13. 260 Mr D. Ellis on the Natural History of the Salmon. Mr G. Shepherd also states, that the grilses, or peels, as they are there called, which retreat to the sea, weighing from eight to ten pounds, make their reappearance in the river during the follow- ing autumn, weighing from twenty-four to thirty, or even thirty- four pounds *. Were we entitled from these facts and statements to estimate the rate of growth of the salmon from birth to the maturest state in which it comes to o^ tables^ we might perhaps say, that, in the first five months of its eifsl^ce, that is^ from April to Au- gust, both inclusive, it reaches, in favourable circumstances, to about eight pounds in weight, or grows at the average rate of about one pound nine and a-half ounces per month : that, from September following to March, seven months, it acquires seven pounds additional weight, or one pound per month : that, from April following to December, or nine months, it gains ten pounds additional weight, which is at the average rate of about one pound one and three-fourth ounces per month : and, lastly, that, through the next twelve months, it gains ten pounds more, or weighs thirty-five pounds, which is somewhat more than thir- teen one-fourth ounces per month. According to this calculation, the rate of growth is greatest in the first period, diminishes as the age increases, and is about one-half ere the salmon has attained to the third year of his age ; and by dividing the total weights by the total months, it will be found that the salmon acquires a weight of about thirty-five pounds in thirty-three months, which, on an average of the whole period, is nearly at the rate of one pound one ounce per month. We give this only as an approximation to the truth ; for the data assumed, both as to the periods of time taken, and the actual weights of the salmon at those periods, may not be the most correcti; and, regarded as an inference generally applicable, much variation in the result may exist in reference to salmon taken in different rivers, and even in the same rivers, under circumstances that vary the period of their birth, or their facilities in getting to the sea, where alone they seem able to procure a due supply of food. Experiments, like those described by Mr Hogarth in the preceding paragraph, if sufficiently extended and varied, and madd with all the requisite accuracy as to dates and weights, and with due care to identify and distinguish the individual fishes ex^perimented upon, would • Report H. p. 148. Mr D. Ellis o7i the Natural History of the Salmon. 261 be the best adapted for ascertaining the proportionate rate of growth in these animals. Unfortunately, however, in the present practice of salmon fishing, experiments of this kind can hardly be continued for a sufficient length of time to obtain the required results. Many of the witnesses state, that the skill and perseverance of the fishers are now so great, that, under the stimulus which ready markets and high prices afford, very few of the clean salmon, which once pass up our rivers, are again permitted to return to the sea ; and, consequently, few salmon are now taken of more than one year's growth. In all the fisheries, north of the Tay, with which Mr Hogarth is acquainted, the proportion of grilses to salmon has, for many years past, been gradually increasing; so that, though the total weight of fish taken may not have di- minished, the quantity of salmon has, and this deficiency has been compensated for only by the increased weight of grilses. The cause of this decrease in the proportion of salmon is owing, continues Mr Hogarth, to the too assiduous and close manner of fishing, by which both the number and size of salmon have diminished. I am quite satisfied, he adds, that all our rivers are overfished, even those as to which the total weight of fish has increased *. The great proportion of grilses to salmon in some of the Irish rivers, is remarked by Mr Halliday -f* ; and Mr Little states, that, though the total weight of fish in the river Foyle, in Ireland, has much increased, yet it is mostly made up of grilse, it being seldom that any large salmon is taken in it. In the Shannon, the fish are a great deal larger, few of them being under twenty, and many thirty-five or forty pounds, and upwards J. After the process of spawning is completed in the river, the parent fish, says Mr Halliday, retire to the adjoining pools to recruit. In two or three weeks from that time, the male begins to seek his way down the river; the female remains longer about the spawning ground, sometimes until April or May. The fishes which have thus spawned are denominated keUs. These kelts, or spent-fish, come down the river, says Dr Fle- • Report II. p. 104, >09. t Report I. p. 64. X Report I. p. 112. JANUAEY MARCH 1828# 8 263 Mr D. Ellis m the Natural History/ of the Sdlmmi, niing, during the spring months, from February to May inclu- sive; so that two or three months may intervene between the deposition of the spawn and the descent of the parent fish, vary- ing, probably, according to the degree of strength in the fish to undertake such migration, and the condition of the river in re- gard to the quantity of water. In their progress to the sea, when they reach the estuary, they pursue a course precisely si- milar to the fry, not roaming about the banks like clean fish, but keeping in the mid-channel. They are at this time compara- tively weak ; and, in thus betaking themselves to the deepest parts of the channel, they are better enabled to resist the de- ranging motion of the flood-tide, and to take advantage of the ebb-tide in accelerating their migration to the sea ♦. It would seem, from a fact mentioned by Mr Little, that some of the kelts, which may have gone down in the spring months to the sea, return again in autumn, in breeding condi- tion. He states, that the person, from whom he purchased the fisheries at Dumfries, told him, that he one year marked a great number of kelt-salmon going down to the sea, and they returned to him again that season, in full condition, going up the river to breed *. This rapid recovery of the kelt-salmon, after it reaches the sea, and speedy redevelopement of its reproductive organs, is not more remarkable than the early growth of these animals, and the developement of those organs in them, during the first months of their existence ; by which they are enabled, as is tes- tified by many witnesses, either to pair together, or with older fishes, and so to propagate their kind. These facts, concerning the propagation of the salmon, and the movements and growth of the young fry, are not only in- teresting in themselves, but derive additional importance from the generality of their occurrence, and their applicability to all the rivers in the United Kingdom, with such modifications only, as local circumstances and conditions may occasionally introduce. Nature has ordained that, in these, as in other animals living in their pristine state, there shall be one season of the year in which the organs of reproduction are fully developed : a second, in which the sexual function shall be discharged : and a third, in which the young progeny shall spring into life, and go through • Report II. p. 6& f Report I. Appendix, p. 13. Mr D. Ellis on the Natural History of the Salmon, ^()5 their destined changes. These peri(x3s may be varied, to a cer- tain extent, by accidental circumstances, or the purposes of na- ture be in some instances entirely frustrated ; but such acci- dental occurrences only partially disturb, but do not counteract, the operation of general laws. In certain seasons, for example, a deficiency of water in any particular river may, in the first instance, prevent the parent fishes from ascending to deposit their spawn, when, by nature, they are prepared to do so ; and the proper season for spawning may thus be delayed, or some- times entirely lost. In other instances, obstacles, either natural or artificial, may oppose the ascent to the spawning grounds ; and the female be constrained, as she sometimes is, to discharge the ova in the deep water of rivers, or in the sea, where they are wholly lost. Even when she gains the upper parts of rivers, some time may elapse before she finds a suitable place to depo- sit the spawn, or a male to impregnate the ova : or the bed, in which the impregnated ova may have been duly deposited, may not retain a suitable quantity of water : or the water itself may become contaminated, and not furnished with air fitted to carry on the evolution of the o\a : or, though the water and air be duly supplied, a difference of temperature, arising from season, from elevation above the sea, or from the prevalence of winds, may check the progress of developement, and proportionably re- tard, in particular rivers and situations, the appearance of the young fry, or even prevent it altogether. Even when the evo- lution of the ova may have been accomplished in due time and manner, the want of water in rivers, during very dry seasons, may retard their descent to the sea until a later period than usual, or sometimes altogether prevent it. Making, however, all due allowance for these varying cir- cumstances and their corresponding results, there seem to be some rivers in which the breeding period of the salmon is uni- formly earlier than in others. Thus, says Mr Little, the rivers Annan, Esk and Nith, do not afford salmon in perfection until a full month after the Dee, which is adjacent to them ; and the salmon caught in the Dee are in bad condition nearly a month sooner than in the other rivers ; they are full bellied, and in worse condition. So, likewise, the salmon taken in the river Shannon in Ireland, are in greatest perfection in February, s2 264 Mr D. Ellis on the Natural History of the Salmon. March and April ; and the fishing there is nearly over by the middle of May *. A similar remark is applicable to the Lee, and other rivers in Ireland ; to the Eden, Severn, and some others in England ; and to the Ness and Thurso in Scotland. This may probably arise from these rivers possessing a higher mean temperature at the season alluded to, the direct operation of heat, in accelerating the developement of the reproductive or- gans being not less marked and striking in the animal, than it is in the vegetable kingdom. Section 3. — Of the Migrations of the Salmon betwixt the Rivers and the Sea. We have seen, that the brood of the salmon, after a short re- sidence in the sea, return to rivers greatly increased in size. Many practical fishers, those especially connected with river fisheries, contend, that not only the young brood, but the older salmon, always make efforts to revisit their native rivers. That many do so is proved by the facts already stated, of salmon, which, having been marked on going down to the sea, have been afterwards retaken in the same river, and identified : But it is equally certain, that numbers of fish, thus previously marked, have never been retaken in their native rivers, but sometimes in another that adjoins it ; and when we consider, says Dr Flem- ing, the numerous foes which unceasingly persecute the salmon during its abode in the sea, which must necessarily mix the fa- milies or tribes belonging to different estuaries and rivers, it seems difficult to conceive, how, after such intermixture, the breeds of different rivers could again separate and collect into their original groups -(•. The assertion made by several expe- rienced witnesses, that they can discriminate the salmon of dif- ferent rivers by original peculiarities of form, may be met by that of others, equally experienced, Mr Halliday for example, who denies that any such distinction is practicable. That sal- mon, however, do frequently differ considerably in point of form from one another I have repeatedly witnessed, says Dr Flem- ing, by looking at the fish taken at the same place by the same net, and collected together in a boat ; but these variations are not greater than in other species of animals, subject to variations • Keport I. p. 114. T Report II. p. 70. Mr D. Ellis on tJie Natwal History qftlie Salmon. 9i&5 in the place of their residence, and in the quantities and quali. ties of their food *. The migration of the salmon from the sea to the river, and back again from the river to the sea, would seem, in certain ri- vers, to take place at short intervals, through every period of the year. During all the spring and summer months, says Mr Little, salmon continue to visit the rivers from the sea. When they thus enter the river early, they would soon go back if they were not killed. After being some little time in the river, they would naturally return to the sea as soon as there was a little flood. He has known them taken in the river Annan when thus going down again to the sea •(• ; — a fact confirmed by Mr Halliday, in the most distinct terms. He fished the river An- nan for several years ; and states, tliat there is one pool in par- ticular in that river, which he had often fished, quite clean before rain came on ; yet, whenever the rain did come, he continued fishing till the water rose so high as to stop the operation ; and all the time he caught salmon coming down the river, some of them much exhausted, and quite changed in colour, as if they had been hung in a smoky chimney, and others very red in the skin. He has taken more than a hundred fish, in one night, in that pool, after the rain had commenced, although it had been fished clean immediately before J. But, though the disposition in salmon to enter rivers, at short intervals, may be universally the same under similar circum- stances ; yet the fact, that they are found in different rivers, at different times, seems to point to some diff*erences in the circum- stances and conditions of those rivers, which counteract these natural dispositions. Thus, in the rivers Ness and T'hurso in Scotland ; in the Severn, the Eden, and others in England ; and in the Shannon and Lee in Ireland, the months of December, January, and particularly February, are declared, by various witnesses, to be the best times in which salmon are taken in those rivers, both in regard to the quantity and quality of the fish ; and some of these rivers begin to fall off" after this period, and, towards April and May, yield few or no fish. Other rivers again, as the Tay and the Tweed, do not yield fish so soon as the former, but continue to afford them, in a marketable condi- • Report II. p. 70. f Report I. p. 10& X Ibid. p. 61. ^66 Mr D. Ellis on the Natural History of the Salmon, tion, till September ; and others are said not to repay the ex- pence of fishing them till March, or even April, and to yield the best fish in May and June. This difference of time, in the appearance of the salmon in different rivers, cannot be ascribed to any difference in geogra- phical position, as far as regards these islands ; for the Ness, which is one of the earliest rivers in Britain, is situate in the highest latitude. It must therefore be sought for in some local circumstances and conditions, which more or less adapt particu- lar rivers to the taste and habits of the fish. Now, the Ness, we are told, flows out of a lake of great depth, which never freezes. In the year T807, Mr Alexander Fraser states, that, at Inverness, the temperature, for ten days, was from 23° to 30°, or more, below the freezing point ; yet this intense cold made no impression either on the river or the lake ; and clean fish, he adds, pass up the Ness every month in the year, except May and June *. It is probable, therefore, that the comparatively high temperature of the Ness, during the winter months, in- duces salmon to enter it at a time when they are repelled from other rivers, which, either from their shallowness, or from re- ceiving large quantities of water produced by the melting of snow, are reduced to a temperature unsuited to the economy and habits of the fish. It is well known, says Sir G. Macken- zie, that, while snow is melting on the mountains, few fish go up rivers. Whether it be its coldness, or any other cause, that makes them dislike snow water, I cannot tell ; but the fact has been noticed, and is consistent with my own observation -j-. As these fishes seem thus to decline entering rivers when much reduced in temperature, so, at other seasons, they seem equally to avoid them when their temperature is too high. During the summer season, the water, in many rivers, becomes so small, and gets so hot, that the salmon will not enter them, but linger upon the coasts, and about the mouth of the river. In one very dry and warm season, when stake-nets were in use in the estuary of the Tay, the salmon, says Mr Halliday, did not even approach the highest stake-net during the neap-tides ; but, when the spring-tides became high, the fish then came up to those nets, and were taken ; when, again, these latter tides fell off, the nets on the lower parts of the frith caught a great • Report II. p. 43. f Report I. Appendix, p. 17- Mr D. Ellis on tite Natural Hutory of the Salmon. 267 deal more fish, which did not then float up so high as the upper nets *. Many otlier witnesses give a similar testimony, as to the refusal of salmon to enter rivers when much heated. The temperature of the sea is probably that best suited to the econo- my of these animals ; and those rivers, therefore, which come nearest to that temperature, will probably be preferred by them ; and as the ordinary heat of fishes is very near to that of the medium in which they live, a temperature, either much above or below that of the sea, is, in all likelihood, unsuited to their nature. If, however, freshes and floods occur in any particular river during the hot season, salmon then move up them, even many 'months before the spawning season. Some of these may re- main in the upper parts of rivers, if they find water sufficient to harbour and protect them, until that season arrives; but others, as we have seen, avail themselves of subsequent floods to revisit the sea, in which alone they may be said to thrive. It is not, however, the freshes and floods in all rivers that induce salmon to enter them ; for sometimes the water brought down certain rivers, is impregnated with matter disagreeable to the fish. The rivers Ness, Ewes, Shin, and Thurso, says Mr Stevenson, supply the earliest fish in Scotland : the Tweed and Tay also supply early fish, but not so early as the former rivers. Now, the four first rivers are discharged from the largest lakes in Scotland, and in these lakes the water is purified before it is sent down the rivers, in the winter and spring months. So like- wise the Tweed and Tay nm principally through clayey soils, and their waters, in spring floods, are not impregnated with matter disagreeable to the fish. But rivers which run through a mossy district, and discharge their waters into the sea, with- out previous purification in large reservoirs or lakes, as the Findhorn, Conon, Beauly, Spey, and many others, — such rivers, when swollen by the melting snows in the spring months, are turbid and disagreeable to the salmon until about the month of April, when they begin to discharge light spring rains, sweet, and comparatively free from the impurities of an earlier period. It is then only, he adds, that these latter rivers begin to yield fish, that is, not till the lake-rivers are beginning to fail ; indeed, > • Beport I. p. 72. 268 Mr D. Ellis ofi the Natural History of the Salmon. when the seasons of some of them have been terminated. From observations and facts which have come within his own know- ledge, the witness is convinced, that, if an account of the quan- tities of fish taken at the various fisheries in Scotland, and the exact periods at which they are taken, were obtained, it would be found that all the rivers discharged from lakes, produce fish at an early period of the year; whilst those discharged from a mossy country, do not produce fish until they commence to send down the sweet spring rains. When, therefore, it is supposed that salmon is in season at different periods of the year, in different rivers, the supposition is so far correct : it does not, however, depend upon the state in which the fish is at that period, but on the state the river is in. Salmon are extremely nice, and only go into fresh water when it is exactly to their taste ; and when the river is in a state to induce fish to enter it, they are gotten of much finer quality than at a period when they do not enter so readily *. In accordance with these views, another respectable evidence, Mr Moir, states, that sal- mon will not enter foul water if they can avoid it ; in proof of which, a case exactly in point, says he, occurs in this neighbour- hood. The bay of N.igg is perhaps the most productive sea- fishery on this coast (Aberdeen), yet, when the river Dee is dis- coloured by peat-bog water, that water is carried into the bay of Nigg by the flowing of the tide : at such times not a single salmon will enter it, and the fishing is frequently interrupted for several days together from this cause -I*. In the migrations of salmon from the sea to the river in the winter and spring months, their course through the estuary seems altogether different from that which they pursue in au- tumn. In the latter period, impelled by the instinct of propa- gation, they pursue their route in the most direct way through the mid-channel, rushing up with the greatest eagerness, where there is water sufficient to convey them, and braving all obstacles to their ascent : in the former, they roam over the banks of the estuary and of the mouths of rivers, borne up with the flowing tide as far as it will carry them, and often returning again to the sea with the ebb tide. It is indeed only when thus roaming- over the banks that salmon are taken in the estuaries, where * Report II. p. 12X-2. + Report II. Appendix, p. 173. . Mr D. Ellis cm thi Natural History of the Salmon. 269 stake-nets are employed, these nets being made to extend upon the coasts between high and low water-mark. That salmon move upwards and downwards with the tide, is testified by many witnesses, who have seen and intercepted them in their down- ward course : and, by the fact, that stake-nets are commonly provided with ebb as well as with flood courts, on purpose to meet this disposition in the salmon, and do actually catch some- times as many fish in their downward as in their upward course. Hence, too, it is, that when, in autumn, salmon become full of spawn, and desert the coasts, betaking themselves more to the mid-channel, in order to ascend rivers, few are taken in stake- nets ; and, for the same reason, as the kelts or spawned fish descend, like the fry in the mid-channel, they are rarely, if ever, intercepted by the stake-nets. But why, it may be asked, do salmon thus visit the coasts of the sea and of the estuaries of rivers, linger upon them, and seem indifferent about entering rivers, unless they are, in all re- spects, suited to their taste ? To this they are apparently im- pelled by the strength of the appetite, which, next to that of propagation, exerts the greatest force over the movements of animals, viz. that of hunger. On the banks of estuaries, sal- mon, says Mr Halliday, find a great deal of food ; he has taken a great many salmon in the frith and estuaries with worms pass- ing through them; such worms as are to be seen on those banks*. During the fishing season of 1823, Mr Moir received all the salmon caught in the stake-nets set between the rivers Don and Ythan ; also the whole of the fish taken in the bay of Nigg ; those taken, likewise, at the bridge of Dee, and at nine other small fisheries in that river. As all these fish were cut up for the purpose of being preserved in a fresh state, he had an op- portunity of examining their stomachs. In the stomachs of those taken in the upper river fisheries, he could never detect any kind of food ; whereas, those taken in the sea were fre- quently gorged wi»h food, which was principally sand-eels (Ammodytes tobianus of Lin.) : The different appearance of the fishes corresponded with that of their stomachs, those taken from the river being softer and inferior to those got from the sea Whence he concludes, that salmon frequent the flat sands B>eipori I. p. 61. JW> Mr D. Ellis on the Natural History of the Salmon. between the Don and Ythan, for the purpose of feeding ; and, for the same reason, he adds, they frequent the coasts at Mussel- burgh and Aberlady, which abound with sand-eels, and are suc- cessful stations for the stake-net, though the one place is thirty, and the other forty, miles from a spawning river *. That salmon do obtain the chief part of their food during their residence in salt water, seems certain from the fact, attest- ed by various persons, that they are in greatest perfection when taken out of the sea, or very shortly thereafter ; and that they fall off in condition in proportion to their abode in rivers. Sal- mon taken in the sea, says Mr Halliday, are by far the richest and best ; they are both weightier and fatter, and in firmer con- dition. If detained in fresh water at any season, they become unsound, and if this happen during the warm weather of sum- mer, they are soon rendered unfit for food -f*. The largest fish are usually got at sea-fisheries, says Mr Stevenson, and the nearer they are got to the salt water the finer is their quality ; so much so, that any one versed in the state of salmon, would at once be able to pick out, from 500 head of fish, those that had been more than two or three days in the river J. As it thus appears that the stomach of the salmon is filled with food, and his condition the most perfect, while roaming over the coasts of the sea and the banks of estuaries ; and that he is found with an empty stomach, and in very inferior condition, after a short residence in fresh water, we readily see not only why he visits the coasts of the sea, but lingers upon them ; why, if he is in- duced to move upwards with the tide, he again returns with it ; and why, when he may have pushed up rivers during floods, he soon tries again to revisit the sea, where alone he is enabled to find proper and sufficient food to satisfy his hunger, and ade- quately support his growth. From the facts thus stated respecting the migrations of the salmon, at different periods of its life, it would seem that it can begin to live only in fresh water, and that, in the earliest period of its existence, salt water is fatal to it ; that, at a period some- what later, it descends rivers on its way to the sea, where it in- creases rapidly in size, and in two or three months returns again to the river. • Report II, p. 171. t Kejjon I. ^0. + Report II. p. 122. Mr D. Ellis on the Natural History of the Scdiiwn. 271 During the summer months, salmon from the sea proceed sometimes high up those rivers, which are furnished with a due supply of water, either permanently, or during occasional floods ; and in subsequent floods they try again to return to the sea : at this time of the year, however, their migrations into rivers are often limited to the point to which the tide flows^ and they re- turn again to the estuary and sea with the ebb-tide. In autumn, again, the male and female salmon ascend to the shallow fords and sources of rivers to breed, remaining there during the winter months, the male, howevel*, returning early in the following year, and the female not till March or April. Beside the breeding-fish, which descend in the winter and early spring months, clean salmon from the sea are constantly ascending and descending those rivers, which, by the quantity^ quality, and temperature of their water, are fitted to receive them. With respect to the causes which influence these alternate migrations of salmon, it would appear that they move towards the sea chiefly in search of the food found on its coasts, and on those of estuaries ; whilst the chief impulse that urges their movement up rivers, is the propagation of their kind, whe|;e alone the spawning process can be duly exercised. As to the cause of their seeking fresh water, when not urged by that im- pulse, we can ofler no other reason than that of a sort of instinct^ which incites them to remove occasionally into fresh water, in which alone they were at first able to exist; whilst the appetite for food calls them again back to the sea. Perhaps, if the water of rivers were always in sufficient quantity, and per- fectly suited to the taste and economy of salmon, they would be moving backwards and forwards from the sea to the river, and from the river to the sea, at intervals more or less great ; and, therefore, the different jxjriods in which they appear in different rivers, is owing to the different circumstances and con- ditions in which those rivers may be, rather than to any na- tural difference in the economy or habits of the fish. How far they move into the deep sea is not known, but that they roam over the coasts, at great distances from the mouths of rivers, is certain from the fact of their being captured in such situations. 3 272 Mr D. Ellis on the Natural History of the Salmon. Description of Plate III. exhibiting the Evolution of the Ova of Salmon. Fig. 1. The ovum of the natural size, after the embryo has become quick in it : at this stage, the body of the embryo has a pinkish tinge, and the eyes are disproportionably large. Fig. 2. The shell just burst, and the head of the embryo protruding. Fig. 3. State of the subject eight hours after it had burst the shell, at which time the pulsations of the heart are very visible. Fig. 4. The shell just thrown oflf, with the tail drooping : before the shell bursts, the tail envelopes the yolk or bladder, which is seen attached to the body of the fish. The shell itself is transparent, and about one-third part of it is fractured by the fish in extricating itself. Fig. 5. The tail of the young fish has now become straight ; the mouth is distinct, and the lower jaw and pectoral fins, which are quite transparent, are in motion, and keep time with the heart, which beats from 60 to 65 times in a minute : At first, the body of the fish is colourless, with slight marks of articulation of the bones, or of stripes on the skin ; the bag attached to the fish is transparent, and is filled with a light # amber-coloured albuminous fluid, with some drops of a clear rose-coloured oil in it. Fig. 6. Represents fig. 3. magnified. The bag beneath the belly is ex- tremely soft and yielding, and the shell is still seen bind- ing the young animal. Fig. 7. Represents fig. 5. magnified. The heart is placed before the pectoral fins, and under the throat, and is connected with a large bloodvessel that runs along the front and bottom of the bag, as is more clearly seen in fig. 8. The bag, which was at first round, becomes, in a day or two after the fish leaves the shell, more and more elongated ; with a micro- scope, the circulation may be seen. The blood flows from under the body of the fish, through vessels which ramify upon the sides of the bag, and from these it is collected, and continued into the large vessel before mentioned, which is connected with the heart : from the heart the blood is again thrown, with regular pulsations, into the vessels of the head and throat, where it is seen to assume a darker hue, as well as to the other parts of the body : air, it is said, or some transpaient fluid, is seen to circulate, in equal quan- PLATE m. Edin rn£w rfui . jffur. roi.iv:^^/2. Ilj.2. 6: Fu^:^. ^vefutun c^tA^ Ov»ff^lAe StUmo StilarofChmfnan, Sabnat, PuHished by A.Bfaek r.diti:ii2S. Mr D. Ellis cm the Natural History of the Salmon. j?73 tity with the Wood. The rays of the gills ai*e distinctly seen, and the body of the young animal begins to assume a brownish colour. Kg. 8. A sketch of fig. 5. magnified, to shew more distinctly the cir- culation of the blood. We have no doubt of the general accuracy of these representations of the changes exhibited in the evolution of the ovum of the salmon. But the reader will bear in mind that they are not made by an anatomist, and cannot therefore be expected to present that minuteness of observation, and extent of description, into which one familiar with such subjects would have entered. On the Temperature of the Interior of' the Earth. By M. L. CoRDiER, Member of the Royal Academy of Sciences, and Professor of Geology in the Garden of Plants*. X HE supposition of a central fire is extremely ancient. It is perhaps coeval with the first dawnings of civilization, and has furnished a basis to some of the fables in which the infancy of the human race has been cradled, traces of it being found in the mythology of almost all nations. It originated from the very imperfect observation of certain natural phenomena, too obvious to have at any time escaped the notice of the vulgar. Confound- ed for ages amidst vague and conjectural notions, which con- stituted nearly all the physics of the ancients and of the middle ages, this hypothesis only began to assume some consistency, af- ter the discovery of the laws of the planetary system. Descartes, Halley, Leibnitz, Mairan,'Buffon especially, and several other phi- losophers of modern times, adopted it, resting chiefly upon consi- derations deduced from the figure of the earth, from certain astronomical phenomena, from the mobility of the subterranean principle which produces magnetic action, from the comparison of the temperatures of the surface with those observed at small depths, and from various experiments on the cooling of incan- descent bodies. The inferences derived from these sources not constituting a body of demonstration sufficiently direct to carry conviction with it, many learned men who were contemporary with those men- tioned, remained undecided, while others supported the old opi- nion, which attributed to the earth no other heat than what it • Read to the Academy of Sciences 4th June 1827. 274 M. L. Cordier, on the Temperature of may receive from the solar rays. The latter opinion at length became the prevailing one. It owed its success in a great mea- sure to the influence of the celebrated geological system pro- duced about the middle of the last century, of which Pallas, Saussure and Werner were the principal promoters, and which for a long time met with no opposition. This system supposes that the original fluidity of the globe took place through the medium of water, that the whole mass was consolidated, stratum after stratum, from the centre to the circumference, by aqueous crystallization ; and that the volcanic phenomena are mere local effects. The opinion on this subject has undergone a great change within these few years. This change, which has been extremely slow in its progress, so great were existing prejudices, commen- ced at the end of the last century. It is to be chiefly attributed to the following circumstances : Important discoveries have been made in geology ; the relative position of the materials compos- ing the oldest formations of the crust of the globe, has been found to be different from what had been formerly asserted ; it has been proved that the volcanic agents reside under the primitive rocks ; the true nature of lavas, and their identity in all parts of the earth, have been discovered ; the analogy of a multitude of strata of all ages to lavas has been demonstrated ; the facility with which all these originally fluid and incandescent matters have crystallized by mere cooling, has been proved and under- stood ; and the theory of aqueous crystallizations has become perplexed. On the other hand, accurate and numerous facts relating to the motion of radiant heat, and of the heat which is propagated in bodies from one molecule to another, have been made known by satisfactory experiments. These facts have been connected by mathematical theories of the most general nature. Ingenious observations have placed beyond doubt the continual radiation of the superficial heac of the earth into celestial space. The ideas which have been long entertained in regard to the inconsiderable depths to which the horary, daily, monthly and annual variations of temperature reach in the soil or strata of diff*erent countries, and the level at which a fixed temperature commences, have been carefully verified. Lastly, new experi-. ments have been undertaken regarding the temperature of deep places accessible to us, and that of the waters coming from them. the Intenor of the Earth. 275 The results have Ijcen compared witli one anotlier, and with the mean temperatures of the surface, and the important conchision has been drawn, that, proceeding from the level at which the fixed temperature commences in the soil of each country, the heat increases rapidly as the depth advances, and this in a quan- tity which has been valued at 1° centig. for every thirty or forty metres *. These remarkable facts, considered partially by some, and grouped in various ways by others, have carried with them all who had a predilection for the hypothesis of central heat. The common conclusion is, that the earth possesses in its interior a temperature, incomparably more elevated than the compound temperature which is observed at the surface ; and even accord- ing to some, that beyond a certain depth, there probably exist an incandescence and a fluidity, whose origin has been coeval with the commencement of things. La Grange and Dolomieu were the first who revived the hypothesis of central heat. Hutton and his able commentator riayfaii', must also be mentioned, notwithstanding the obscurity in which they involved their opinion, and the errors into which they fell when employing this principle in the support of geolo- gy. More lately, this great question has been investigated by the illustrious geometrician whose loss the sciences have to de- plore, M. de La Place, and before him, by Mr. Fourier, who was naturally led into the subject by his memorable researches regarding the general theory of heat. Other autliorities would not be wanting, were it possible to make mention here of the many learned men, especially in England, who, during the last twenty years, have successively adopted the same opinion. Thus the hypothesis of subterranean heat now presents itself, supported by a mass of authorities and facts which no longer permits us to view it as a creature of the imagination. In the state in which the subject now stands, this hypothesis seems to merit the particular attention of the learned world. If the proofs adduced in its favour are insufficient, recourse must be had to new observations ; if they suffice, we must hasten to a- dopt the principle, determine its characters, deveiope its conse* quences, and if it be possible elicit its applications. • Metre is 3 feet and 3.371 inches English, «r 39.371 inches. 276 M. L. Cordicr on the Temperature of If we examine the data of this great problem, it is easy to see that only one of them might lead to uncertain results. This datum, which is at the same time the most direct and the most decisive, is that which is grounded on the experiments from which it has been inferred that the temperature of the earth augments progressively from the surface toward the centre. It may be asked, if these experiments are accurate, if they have been suitably discussed, if they are sufficient, and if the infe- rences that have been drawn from them leave nothing to be de- sired ? I have thought that it would be useful to settle these doubts, and this for the interest of science in general, more than for that of an opinion which I have myself cherished for a very long time, and to which I have already paid the tribute ol' my researches in other points of view. Such is therefore the principal object of the memoir, which I have now the honour of communicating to the Society. M. Cordier then proceeds to a very interesting examination of the various experiments on subterranean temperature, hitherto published, in which he discusses all that is known in regard, 1^^, To the temperature of the water, whether running or standing, met with in mines ; 9.dly^ To the temperature of the air in the shafts, galleries, and levels of mines ; and, Sdly^ To the tempe- rature of the air in caves, as in those for instance under the Ob- servatory at Paris. From these details he draws the following conclusions : — 1. If we except a certain number of observations, as not sufficiently satisfactory, all the others announce, in a more or less positive manner, that there exists a remarkable increase of temperature, proceeding from the surface of the earth towards the interior. 2. The results obtained at the Observatory at Paris, are the only ones from which a numerical expression of the law, which this increase follows, may be deduced with cer- tainty. This expression carries to twenty-eight metres, the depth which corresponds to the increase of 1° of subterranean heat. It results from this, that, at the depth of 2,503 metres under Paris, we would reach a temperature of 212° of Fahren- heit's scale. 3. A small number only of the other results fur- nish numerical expressions, sufficiently near the law in question to be admitted. These expressions vary from 57 to 13 metres. the Interior of the Earth. 277 • for 1* of increase ; their mean announces in general a more ra- pid increase than that hitherto admitted. 4. Lastly,' in group- ing by countries all the admissible results, I am led to a new and important idea, which is, that the differences between the results collected in the same place, do not depend solely upon the imperfect nature of the experiments, but also upon a certain irregularity in the distribution of the subterranean heat in dif- ferent countries. In the second part of the memoir, M. Cordier gives a detailed account of his own experiments on subterranean temperature, made in coal-mines in France. These were conducted with great care, and are apparently the most accurate hitherto made. From these experiments, and those enumerated in the first part of the memoir, he draws the following conclusions : — 1. Our experiments fully confirm the existence of a subterra- nean heat, which is peculiar to the terrestrial globe, does not de- pend on the solar rays, and increases rapidly with the depthi^ 2. The increase of the subterranean heat does not follow the same law over the whole earth ; it may be twice or three times as much in one country as in another. 3. These differences are not in constant relation, either with the latitudes or longitudes. 4. Lastly, The increase is certainly more rapid than has been supposed ; it may go so high as a degree for every 15 or even 13 metres, in certain countries : provisorily the mean term can- not be fixed at less than 25 metres. These important con- clusions, M. Cordier remarks, fix the bases, at the same time modifying them considerably, according to which the mathe- matical theory of the dispersion of heat, in bodies of large di- mensions, may be applied to the earth. They are in hai*mony with the inferences derived from phenomena, of so very dii*- ferent a nature, which have long afforded evidence of the inter- nal incandescence of the earth. Brought into mutual connec- tion, these different elements give rise to new combinations, and to remarkable applications. In our opinion, there may be eli- cited from them numerous inductions, calculated to throw light on the most obscure, and, at the same time, the most essential parts of geology. The following are the principal of these in- ductions : JANUARY — MARCH 1828. T 278 M. L. Cordier on the Temperature of 1. All the phenomena observed, being in accordance with the mathematical theory of heat, announce that the interior of the earth is furnished with a very elevated temperature, which is peculiar to it, and which has belonged to it since the origin of things ; and, on the other hand, the volume of the earth's mass being infinitely greater than that of the mass of waters (about ten thousand times greater)^ it is very probable that the fluid- ity which the globe incontestibly possessed, before assuming its spheroidal form, was owing to heat. 2. This heat was excessive, for that which may at present exist at the centre of the earth, supposing a continued increase of 1 degree for every 25 metres of depth, would exceed 3500'' of Wedgwood's pyrometer (upwards of 250,000° centigr.) 3. It must be admitted that the temperature of 100° of Wedg- wood's pyrometer, — a temperature capable of melting all the lavas, and a great part of the other known rocks, exists at a depth which is very small, compared with the diameter of the earth ; and, for example, from my experiments, that this depth is less than 6B leagues, of 5000 metres, at Carmeaux, 30 leagues at Littry, and 23 leagues at Decise, numbers which correspond to 5^, /^, and /j of the mean radius of the earth. 4. There is, therefore, every reason to believe, that the inter- nal mass of the globe is still possessed of its original fluidity, and that the earth is a cooled star, which has been extinguished only at its surface, as Descartes and Leibnitz thought. 5. If there be considered, on the one hand, the extent which Dolomieu's observations on the seats of volcanic foci *, and our own experiments on the composition of lavas, have given to volcanic phenomena -f, and, on the other, the great fusibility of the matters which all the volcanoes of the globe at present throw up, or even of those which they ejected long ago ; it must be inferred that the internal fluidity commences, at least in many points, at a depth much less than that at which the temperature of 100 degrees of Wedgwood's pyrometer. • Dolomieu, Rapport sur ses Voyages in 1797- Journal des Mines, t. vii, p. 385. t Recherches sur Differens Produits Volcaniques. Journal des Mines, t. xxi, p. 249. and t. xxiii. p. 55. — Memoire sur la Composition des Laves de tous les Ages. Jouni. de Phys. t. Ixxxiii. p. 135. the Interior of tJie Earth. 279 6. The crust of the earth, not including the superficial and incomplete pellicle, which is named secondary, being formed by refrigeration, it follows that consolidation has taken place from without inwards, and consequently that the layers of the original rocks nearest the surface are the oldest. In other terms, the primordial formations are so much the more recent, the deeper the level at which they occur, which is just the reverse of what has hitherto been admitted in geology. 7. M. Fourier, on considering the distribution of subterranean heat at the depths which are accessible, the temperature of the poles, and the existence of radiation toward the celestial spaces, has demonstrated that the earth continues to cool *. This cool- ing is insensible at the surface only, because the loss of heat there is continually compensated by the effect of a propagation, which uniformly proceeds from without inwards, a compensation which is nearly perfect, which continually approaches the state of equi- librium, and which experiment and theory perfectly explain. The loss of heat has therefore no influence but at great depths, whence there results, that the crust of the globe daily continues to increase internally by new solid layers. Thus, the formation, of the primordial strata has not yet ceased ; nor will it cease- until after an immense period of time, that is to say, when the cooling shall have attained its limit. 8. If the crust of the earth has been formed in the manner in which we suppose ii, the primordial strata with which we are.acquainted ought to be disposed nearly in the order of their fusibility ; I say nearly, for some influence must be attributed to the rapid action with which the cooling must have been carried on at the commencement of things, and that of chemical affini- ties operating upon such large masses. Now, the magnesian, calcareous and quartzose strata, are in fact the nearest to the sur- face. 9. According to what has been stated above, the mean thick- ness of the crust of the earth probably does not exceed twenty leagues of 5000 metres each. I would even say, that, according to • General Remarks on the Temperatures of the Globe and Planetary Spa- ces, by M. Foiyier ; Annales de Chimie et de Physique, t. xxvii. 1824, p. 136.; and Resumi theorique des Proprietes de la Chaleur rayonnante, by the same, same volume, p. 275. ;«:-' y . i .Ci T 2 ^0 M. L. Cordier oji the Temperature of several geological data, not yet interpreted, and of which I shall speak on another occasion, it is probable that the thickness is still smaller. Keeping to the above result, this mean thick- ness would not be equivalent to the sixty-third part of the mean radius of the earth. It would only be the four hundredth part of the developed length of a meridian. 10. The thickness of the crust of the earth is probably very unequal. This great inequality appears to us to be announced by the inequality of the increase of the subterranean tempera- ture in different countries. The different conducting powers of the strata cannot of themselves account for the phenomenon. Many geological data lead us equally to presume, that the thick- ness of the earth''s crust is very variable. 11. The heat which the soil of each place continually disen- gages, being the fundamental element of the climate which is established there, and, according to our ideas, the quantities of this disengaged heat not occurring in a constant relation in diffe- rent countries, it is now understood why countries, situated in the same latitude, have, other circumstances being the same, diffe- rent climates, and how Mairan, Lambert, Mayer, and other philosophers, have erred in attempting to represent by formulae the gradation, supposed by them to be regular, which the mean superficial temperature follows from the equator to the poles. There is thus also a new cause added to those which occasion the singular inflexions which the isothermal lines present. 12. Whatever be the nature of the astronomical forces or events which have formerly disturbed the stability of the conti- nents, and occasioned the general state of dislocation and over- turning which the structure of the earth''s crust exhibits, it is easy to conceive that all the parts of this crust floating, if we may so express ourselves, around a perfectly fluid sphere, and being moreover infinitely subdivided, in consequence of stratifi- cation, and especially from the innumerable contractions which refrigeration has produced in each stratum, may have been dis- located and overturned in the manner in which we see them. These effects are incapable of being explained by the generally received opinion, that the superficial strata were the last conso- lidated, and that the globe is solid to the centre. IS. In considering the probable fluidity of the central mass^ the Interior of the Earth, 281 the phenomena of earthquakes, the thinness of the consolidated crust, and especially the innumerable solutions of continuity, by which it is broken up, and which result from stratification, the contraction arising from progressive cooling, or from the overturnings that have taken place, we long ago conceived it probable that this crust possesses a certain flexibility. We de- veloped the elements of this singular property in a memoir read to the academy in 1816, and which had the disadvantage of being presented at a period when people*'s minds were not sufficiently prepared for attending to researches of this nature. Now, this property is at the present moment more probable than ever. It is further conceived, from the fluidity which is to be at- tributed to the central matters that serve as a support to the crust, that the flexibility in question may be j)ut into action with- out its being possible for us to perceive it. In fact, to produce a change of figure in the spheroid capable of raising the equator a metre, by proportionally shortening the earth's axis, it would be sufficient, in as far as concerns the plane of the equator, that each of the innumerable solutions of continuity which intersect the consolidated crust, and which I shall suppose to be five me- tres from each other at an average, should be subjected to a se- paration equal to the 1276th part of a millimetre, a quantity which is excessively small. 1 4. The probable flexibility of the earth's crust is supported by two principal causes, the one general and constant, the other local and transitory. The latter cause, during the last thirty years, has not spared any country. Sometimes it has shaken, almost at the same time, the twentieth part of the surface of our continents, or it has made the soil undulate in directions equal to the sixtieth or seventieth portion of a meridian ; I speak of eartliquakes. Since the commencement of authentic history, there have been rec- koned upwards of six hundred, whose violence or extent have rendered them memorable. The second cause depends upon the circumstance, that the permanent diminution of the earth's heat no longer produces any sensible contraction in the subterra- nean regions in the vicinity of the surface, while it continues its effects in the deeper parts, whether for augmenting the separa- tion of the masses which have experienced the first effects of 282 M. L. Cordier on the Temperature of contraction, or for occasioning new solutions of continuity in these masses. Let it be added, that the slow formation of new solid strata in the interior, must be conformable to the general rule, in virtue of which substances in the fluid state experience a great diminution of volume in passing to the solid state. 15. The least flexible regions of the earth'^s crust are neces- sarily those near the surface, for the transverse solutions of con- tinuity which they contain, have long since attained and lost their maximum of separation. It is evident that the central forces tend to bring nearer to each other the elementary masses of the superficial regions, in proportion as the cooling contracts more and more the volume of all the internal parts of the globe. This approximation would act in a uniform manner, if the strata of the consolidated crust were concentric, and if all the transverse solutions of continuity were directed in planes perpendicular to the surface ; but this is not the case. The shattered state of the primordial crust is such, that, considering it in the great scale, lean only define it as a heap of fragments pressed against each other, and of which the strata are always very much inchned or vertical. Since the establishment of this state, the obliquity of an innumera- ble quantity of solutions of continuity, of which some have an im- mense extent, forms an obstacle to the establishment in all points of an approximation of the elementary masses that might be uni- form and proportionate to the central contractions. Changes of level of no great extent, but which may have affected great continen- tal surfaces, have been substituted for this approximation. Many geological facts agree with this hypothesis. It is to be presum- ed that this efi^ect still subsists at the present day, although in an imperceptible manner. If the secular raising of the basin of the Baltic is constant, it may be accounted for in this manner. The above hypothesis will also explain the change in the level of the Mediterranean, which we observed with Dolomieu on the shores of Egypt *. There is reason to think, according to our opinion, that at present this part of the African continent is un- dergoing a progressive lowering, which may amount to two or three centimetres in a century. 16. M. de Laplace, estimating the astronomical observations • See my description of the ruins of San (the Tanis of the ancients), in the great work on Egypt. the Interior ofilie Earth. made in the time of Hipparchus to be sufficiently accurate to af- ford evidence that the duration of the day has not diminished 3 Jg of a centesimal second for twenty centuries, thought that the contraction which is actually produced by the secular cool- ing of the globe, is not sufficiently great to increase the velocity of rotation in a sensible degree. This opinion gives us a useful limit of the actual effect of the g-eneral refrigeration. 17. But if the effects of contraction since the commence- ment of the cooling are considered, one cannot help admitting that it has exercised a certain influence in the above point of view. On the one hand, the duration of the day has succes- sively diminished a small quantity ; and, on the other, the figure of the earth must have undergone a slight alteration, in conse- quence of the acceleration of the velocity of rotation, provided the flexibility of the consolidated crust has been sufficient to per- mit the change of figure, which we admit as being the case. Thus at present the day is a little shorter, and the spheroid a little flatter toward the poles, than at the commencement of things. If these data are correct, it is evident that the two ef- fects continue. All that is to be done is to find a better means than that mentioned above for appreciating the feeble intensity ; which is not impossible, as we shall presently see. 18. Another consequence, not less probable, and not less cu- rious, to which we are led by the hypothesis of central incan- descence and fluidity, is the following. However little the crust of the earth may be influenced by the flexibility which, accord- ing to our ideas, must be attributed to it, it follows that the phenomenon of the tides is exercised, without its having been hitherto suspected, upon the terrestrial mass itself. This effect, which, besides, must be excessively feeble, will not excite asto- nishment, when we reflect that it certainly existed at the com- mencement of things, that is to say, when the surface of the globe possessed the perfect fluidity which is admitted in all the theories. It is easy to demonstrate that the greatest of these ancient land-tides could not have been less than from four to five metres. 19. As the secular refrigeration of the earth is continually in- creasing the thickness of its crust, it may be asked if the incan« descent matter which is subjected to this action, passes entire- 284 M. L. Cordier ow the Temperature of \y into the solid state ; or if it is decomposed, so as to furnish solid parts and gaseous parts. There is nothing improbable in the latter idea ; in fact, the consolidation of lavas daily presents a very striking example of the production of gas by refrigera- tion. If we admit this supposition, we can account for the ori- gin of the first matter of earthquakes in a very natural manner. An excessive temperature keeps this first matter in the gaseous state, notwithstanding the enormous pressure which it experien- ces at these great depths. The capricious nature of the pheno- mena of earthquakes would also be accounted for by the ex- treme inequality of the internal surface of the crust of the earth. 20. The preceding data lead to an entirely new explanation of volcanic phenomena ; an explanation which will perhaps ap- pear more satisfactory, at least to the very small number of per- sons who have a just and complete idea of the elements of the question, than any that has hitherto been proposed. These phenomena appear to us a simple and natural result of the in- ternal refrigeration of the globe, a purely thermometrical effect. The internal fluid mass is submitted to an increasing pressure, which is occasioned by two forces whose power is immense, al- though their effects may be slow and not very perceptible. On the one hand, the solid crust contracts more and more in pro- portion as its temperature diminishes, and this contraction is ne- cessarily greater than that which the central mass experiences in the same time ; on the other hand, this same envelope, in con- sequence of the insensible acceleration of the rotatory motion, loses its internal capacity in proportion as it recedes more from the spherical form. The internal fluid matters are forced out- wards, under the form of lavas, by those habitual vents which are named volcanoes, and with the circumstances which the pre- vious accumulation of gaseous matters, which are naturally pro- duced in the interior, give to eruptions. This hypothesis needs not excite astonishment, for I can demonstrate its probability by a very simple calculation. In 1803 I cubed in TenerifFe, as nearly as it was possible, the matters ejected by the eruptions of 1705 and 1798. I per- formed the same operation with regard to the products of two eruptions still more perfectly isolated, which exist in the extinct the Interior qftJie Earth. 285 volcanoes of the interior of France, viz. (in 1806) those of the volcano of Murol in Auvergne, and (in 1809) those of the vol- cano of Cherchemiis, near Issarles at Mezin. I found the vo- lume of the matters of each eruption much inferior to that of a cubic kilometre *. From these data, and others of a similar kind, which I have collected in various parts, I consider myself war- ranted to assume the volume of a cubic kilometre, as the ex- treme term of the product of eruptions considered in a general sense. Now, such a mass is almost nothing compared with tho bulk of the globe. Spread over its surface, it would form a layer not more than one five-hundredth part of a millimetre in thickness -f-. In exact terms, if we suppose the crust of the earth to have a mean thickness of twenty leagues of 5000 metres, a con- traction capable of shortening the mean radius of the central mass Txgjth of a millimetre, would be sufficient to produce the matter of an eruption. Proceeding on these data, if we suppose that contraction alone produces the phenomenon, and that over the whole earth there take place five eruptions annually, we find that the difference between the contraction of the consolidated crust and that of the internal mass^ only shortens the radius of that mass one millime- tre in a century. If there be only two eruptions yearly, it takes two centuries and a-half to produce the same shortening. We see, that, in all cases, an excessively small action is sufficient to produce the phenomena. It will be remarked, that this action, if it be real, is necessa- rily in connection with the total contraction which the globe ex- periences from the effect of secular cooling. It furnishes a basis for calculating the very slight influence which this total contraction exercises in accelerating the velocity of rotation. Nothing less than the enormous power, which I have pointed out, could suffice to raise the lavas. In the particular case in which they would come exactly from a depth of twenty leagues it is easy to prove, from their mean specific gravity, that they would be pressed by a force equivalent to that of about 28,000 atmospheres. It is, besides, well known, that they flow almost always after the eruption of the gaseous matters, which may very easily be conceived, according to my theory. • The Kilometre is 39371,00000 cubic English inches. t The Millimetre is .03937 English cubic inches. 286 M. L. Cordicr on the Temperature of This is not the place for developing the purely ihermometri- cal hypothesis which I propose for explaining volcanic pheno- mena, and shewing with what success it may be applied to all the details of these phenomena. I shall content myself with re- marking, that it accounts for the identity of circumstances by which the manifestation of volcanic action, in all parts of the world, is characterised, for the prodigious reduction which the number of volcanoes has undergone since the commencement of things, for the diminution that has been effected in the quantity of matters ejected at each eruption, for the nearly similar com- position of the products of each geological epoch, and for the small differences that exist between the lavas which belong to different epochs. Lastly, in this hypothesis, the most usual di- rections of earthquakes announce the thinnest zones of the earth's crust ; and the volcanic centres, as well ancient as modern, con- stitute, at the same time, the points at which this crust has the least thickness, and presents the smallest resistance. In the above I have not calculated upon the gaseous matters which each eruption produces, because, supposing them reduced to the state of liquidity which they originally had in the mixture from which they have been disengaged, their volume would be very inconsiderable, and because the mean of one cubic kilo- metre, which I have adopted, is much above the real mean. 21. The greater part of the substances contained in mineral and thermal waters being analogous to those which are exhaled by craters during and after eruptions, and by currents of lava when they crystallize, as well as by solfaterras, it must be supposed that they come from a common reservoir. Their emission occa- sions continual losses to the internal gaseous charge. These losses, which, however, are incessantly repaired by new subter- raneous products, take place in virtue of an expansive power, which is immense, and through a succession of extremely narrow ' fissures. The water is furnished by the superficial causes which feed common springs. The alteration of certain parts of the canals, especially near the surface, may sometimes occasion the substitution of certain principles by others. In this systeitt of explanation, it is easy to conceive the permanence of the springs, their nearly invariable temperature, and the singular nature of their principles. Several phenomena appear to me to W * the Interior of the Earth. H J887 prove that they were much more numerous at periods antece- dent to the present geological epoch. This circumstance is ex- plained by the greater thinness of the earth's crust at that time, and the more rapid progress of refrigeration. 22. If we judge by the appearance of lava, the fluidity of the incandescent matter which constitutes the interior of the earth is very great, and its density in the regions, situated at a distance from the centre, (for example, at a distance equal to Jgth of the radius,) is much inferior to the mean density of the whole globe. These two data are not in opposition to the in- fluence which must be accorded to the enormous and increasing pressure which is due to the action of the central forces. It is to be observed, in the first place, that fluids can be very little compressed, that their compressibility in this case must have a limit, and that its effects may be balanced by excessive heat. Moreover, the present lavas have, after their consoh'dation, a mean specific weight, greater than that of the primordial rocks taken together ; from which it may be concluded, independently of every other consideration, that the density of the central mat- ters depends much more upon their nature than upon pressure ; they have been originally placed in the order of their specific gravities. The existence of gold and platina proves that sub- stances having, from their nature, an extreme density, may oc- cur at the centre of the earth. 23. The preceding statement shews, that there is some proba- bility in the hypothesis of Halley, who attributed the magnetic actions to the existence of a mass composed in a great measure of metallic iron, of irregular form, and possessing a particular revolving motion, situated at the centre of the earth. Two kinds of phenomena, of which Halley had no knowletlge, add to this probability. On the one hand, the rotation of the ring of Saturn round that planet may be brought forwai'd as furnishing a sort of analogy ; and, on the other, the nature of the stones that have fallen from the sky, and the existence of meteoric iron, prove that iron in the metallic state, and alloyed with nickel, may enter abundantly into the composition of the planetary masses. 24. If Halley's hypothesis be admissible, it furnishes the li- mit of the internal temperature of the earth. This limit is M. L. Cordier on the Temperature oj that of the resistance which forged iron, subjected to an enor- mous pressure, is capable of opposing to fusion. We might be inclined to reduce the temperature, on considering that Newton''s experiments, confirmed by those of Mr Barlow, have proved that iron, raised to a white heat, loses its magnetic virtue. But, on the other hand, it must not be lost sight of, that an excessive pressure of the metal should probably protract in a great degree the term at which the magnetic virtue is thus destroyed. 25. Lastly, According to the same hypothesis, there would be reason for making inquiries respecting various extremely slight, secular, and not hitherto perceived, effects, which the different positions, and the irregular form of an internal solid mass, possessed of a peculiar motion, and composed in part of metallic iron, might occasion. Thus, for example, we might be led to doubt the perfect and absolute invariability which has hitherto been attributed to the direction of the plummet in each place ; and this doubt would apply to countries distant from the zones without decHnation, and from the magnetic equator. Such are the principal inferences at which we arrive, on intro- ducing the hypothesis of central heat and fluidity, amidst the most important questions of geology. It would be easy to extend these inferences, and, for example, to explain, in an equally satisfactory manner, the formation of the unstratified primordial rocks, that of the transition rocks, of veins, and of the gypseous, sulphureous, saline, calcareous and magnesian strata of the secondary series. The fecundity of applications is remarkable, and adds to the pro- bability of the principle. The case is different with the Neptunian system, which so long prevailed, and which represents the globe as a cold inert mass, solid to the centre, and formed from with- in outwards by aqueous depositions. This system has proved a sterile one, and none of its applications are now able to stand a serious examination. It reduces itself to narrow limits, to the explanations of those superficial strata, formed of consolidated sedimentary matters, of agglomerated debris and organic re- mains, which constitute almost the whole of the excessively thin envelope, named secondary. Had not the authority of the naturalists who brought this system into credit, given a bias in its favour, it is evident that, at its commencement, it would have been made to undergo a very simple trial, from the Interior of the Earth. 2fl9 which it could not have escaped, namely, the comparison of the masses of water and of earthy and metallic matters, m hich en- ter into th^ composition of the globe. It is easy to shew that the weight of the mass of water does not exceed the fifty-thou- sandth part of the weight of the whole globe. Now, with what- ever solvent this mass has been quickened, it is inadmissible that one kilogramme of water could ever have dissolved 50,000 kilogrammes of earthy and metallic matters. We may be permitted again to remark, that it is not the spi- rit of system by which we are now led to the idea of central fire ; it is in spite of such a spirit, and in opposition to many prejudices. This return to a former opinion is occasioned by an accurate and profound examination of phenomena of very different orders. It cannot be believed that by mere chance natural philosophy, astronomy, and geology have arrived at the same point, after fol- lowing such different paths. We may therefore affirm, without fear of being considered hasty, that the hypothesis which is equally a desideratum in all these sciences, seems already to pre- sent the characters of a real and fundamental principle; and every thing seems to predict, that it will have as powerful an influence upon the progress of the theory of the earth, as that which the great principle of gravitation has exercised upon the theory of the motion of the celestial bodies. From the present state of this discussion, it would seem that the Academy ought no longer to remain neutral on so important a question. Perhaps it may now be time to carry into effect a measure proposed at the sitting of the 28th November 1825, on the recommendation of M. de La Place *. Perhaps, also, it would be proper to direct the attention of scientific men, in general, to the subject, by offering prizes for the successful discussion of some of the elements of this great question. The determination of the figure of the earth has occupied the Academy for upwards of a century ; the investigation of the prin- • The measure in question was the naming a commission of six members (MM.;de la Place, Arago, Poisson, Thenard, Gay Lussac, and Dulong), who were directed to make out a programme of experiments to be performed, that the Academy might be enabled to determine, by correct experiments, \sty The state of the earth's magnetism ; 2rf/y, The pressure and composition of the at- mosphere ; 3rf/y, The heat of the globe at different depths. 290 The Lord President on the Natural History of ciple which presides over the structure of the globe, and which regulates all the phenomena depending upon it, is not less wor- thy of its efforts, or beneath the talents and resources which it has at its command. The object is certainly one of the most elevated to which the human mind can aspire : its attainment would, moreover, be of the highest importance to the whole phi- losophy of science. If it is averred that the earth is not an in- ert mass, as it has been so long supposed ; if the appearance of inertia is only owing to the slowness of the phenomena, and their feeble intensity : if all is in motion and in labour in the interior, as all is in motion and in labour on the outside of the globe, we arrive at a result of the highest importance, since it seems appli- cable to all the celestial bodies; and there is thus obtained a most powerful proof of the existence of the great principle of universal instability, which was long ago announced or foreseen by Newton and other philosphers ; a principle superior to the great rules which we are accustomed to regard as exclusively constituting the laws of nature, by the aid of which we see be- yond the longest and apparently most perfect periodicities of our solar system, which appears to govern the universe even in its minutest parts, which continually modifies all things, alters and displaces them insensibly and irrevocably, and leads them through the immensity of ages, to new ends which human intellect can- not assuredly penetrate, but of which it may at least boast of ha- ving foreseen the necessity. Memorandum from the Right Honourable the Lord President, containing somejacts relating to the Natural History of the Swallow and the Partridge, To Professor Jameson. x\.B0DT eighteen or twenty years ago. The Lord President, then Lord Justice- Clerk, left his house at Granton, on the 17th of April, to go on the West Circuit. There had been a fall of snow the night before, the l6th, and it lay on the ground two or three inches deep. He breakfasted with Solicitor Blair at Aventon, near Linlithgow, where the snow was still deeper, and the frost keen. He stop- 3 the SwdUow and the Partridge. 291 ped to bait his liorses at the village of Larbert, the snow still lying there. While his horses were feeding, he walked along the lane towards Carron, where the works were in full activity, six or seven furnaces being then in constant employment. As he approached the works, the effects of the heated air from the furnaces became very apparent ; and when he came to the great Mill Pond, he found the snow entirely gone ; the air swarming with gnats and other insects, and numbers of swallows skim- ming over the mill-pond. On remarking this to one of the workmen whom he met, the man answered, " Oh aye, sir, we seldom miss the swallows here."" For some years after he settled at Granton, swallows con- stantly built in the corners of his windows, which, of course, they dirtied and obscured. This was a great obstruction to the view of the Forth. At last, it occurred that they might be prevented from building, by rubbing the corners of the windows with oil or soft soap. This was accordingly done early in the next season. The swallows began to build as usual ; but as fast as they attempted to attach their materials to the stone, they slipped off. They renewed their attempts for some days ; and then gave the matter up ; and, what is very remarkable, although the oiling has never been renewed, and the effects of it must have long ago ceased, not a single swallow has ever at- tempted, since that time, to build on the windows here, not even in those which had not been oiled. Nay, they do not even build in the mock windows ; though one constantly builds in the coal cellar, to which it can only get by diving under an open doorway, and where the servants are breaking coals every hour of the day. At Tyninghame, the seat of the Earl of Haddington, the kit- chen is in a building separated from the main house by an open court, but connected with it by a covered passage, supported by posts, and open to the south. In the corner of the passage, close to the kitchen door, a bracket is placed for holding a lamp, which is taken down to be trimmed every day, and light- ed every evening. On that bracket a swallow, and it is believed the same swallow, built her nest for three or four years, quite regardless of the removal or light of the lamp, and the constant passing and repassing of the servants. 292 M. Cuvier on the Domestication of On the opposite side of the same open court, the great Iwuse- bell is hung, under a wooden cover, fastened to the north wall of the house. It is a large bell, and is rung several times a-day, to call the servants to their meals. Under the wooden cover of this bell, the same swallow, it is believed, which had formerly built on the bracket for the lamp, built a nest for several years, and never was in the least disturbed by the ringing of the bell, or the rattling of the rope. I may take this opportunity of mentioning a very curious fact relating to the partridge, which also occurred at Tyninghame. Lord Haddington has a breed of wild turkeys, which never en- ter the poultry house or yard, but roost in the trees, and live chiefly on beech-mast, and any thing else they can pick up, though they are tame enough to come about the house to be fed, in the time of frost and snow. About eight or ten years ago, a cock partridge, full grown, suddenly joined himself to the flock of these turkeys, and remained constantly with them during the whole summer, autumn, and winter ; at night he slept un- der the trees in which they roosted ; in the day he fed with them, and was not in the least frightened or disturbed by peo- ple walking among them. He took great liberties with the old turkey cock ; when he saw him going to pick up a worm or any seed, he used to run under him, between his legs, and snatch it out of his mouth, and the old gentleman never resented such in- dignities. Early in spring he left them, as it was supposed, to find himself a mate, at the pairing season. But, in the begin- ning of autumn, he rejoined his old friends, and continued with them as formerly, until the next pairing lime, when he again disappeared, and returned no more, so that he was probably killed. Essay on the Domestication of Mammiferous Animals, with some introductory considerations on the various states in which we may study their actions. By M. Frederick Cu- vier. (Continued from p. 60.) XjET us inquire, therefore, now that we know the animals which are associated with us, what is the disposition common to Mammifcrmis Animah. S93 some and foreign to others, which might be regarded as essen- tial to domesticity ; for, witliout a particular disposition which would second our efforts, and prevent our empire over animals from being merely accidental and transitory, it is imjwssible to conceive how we should have succeeded in domesticating ani- mals, had all of them resembled the wolf, the fox, and the hyena, which constantly seek seclusion, and even flee the pre- sence of other individuals of their own species* Perhaps, by means of perseverance and labour, we might be able to form among these animals races familiarized in a certain degree to man, so as to become habituated to his neighbourhood, and even to prefer it, from the advantages which they would derive from it, as has been done in the case of the cat, which lives among us ; but between this and domestication there is a wide difference. Besides, to attain an object it is necessary to knoW it, and how could the first men, who associated themselves with animals, have known this object ? And had they conceived it hypothetically, would not their patience have been exhausted in vain efforts, from the innumerable attempts they would have had to make, and the great number of generations on which they would have to act, in order, after all, to arrive only at im- perfect results. Thus, the more we examine the question, the more evident does it become, that a high degree of intellect) great mildness of character, the fear of chastisement or the ac- knowledgment of benefits, are insufficient of themselves to ren- der an animal susceptible of domestication ; ^nd that a particu- lar disposition is indispensable to make animals submit and at- tach themselves to the human species, and to render its protec- tion necessary to them. This disposition can only be the social instinct carried to a very high degree, and accompanied with qualities calculated to aid its influence and developement ; for all the social animals are not susceptible of domestication. But all our domestic animals which are known in their natural state, whose species still re- mmn in part wild, or of which some of the races have acciden- tally returned to their original condition, form more or less nu- merous herds ; while no solitary species, however easy it may be to tame it, has afforded domestic races. In fact, it is suffi- cient to examine this disposition, to see that domesticity is but a JANUARY— MARCH 1828. U f^ M. Cuyier on the Domesticatum of mere modification of it. To establish this truth, I shall not re- peat what I have already stated respecting sociability in the me- moir which I published on that subject ; I shall merely consider the domestic animals, with regard to man, as compared with what the social animals are with regard to one another. When, by our benefits, we have attached to us individuals of a social species, we have developed to our own advantage, we have directed toward ourselves, the propensity which impelled them to draw rear to their fellows. The habit of living near us has become in them a want so much the more powerful, that it is founded in nature ; and the sheep which we have reared is led to follow us as it would be led to follow the flock among which it was brought forth ; but our superior intellect soon de- stroys all equality between animals and us ; and it is our will which governs theirs, as the stallion, which, from its superiority, has become the chief of the herd which it leads, draws after it all the individuals of which this herd is composed. There^is no resistance, so long as each individual can act conformably to the wants by which it is excited ; it commences whenever this situation is changed. It is for this reason that the obedience of animals to us is not more absolute than to their natural chiefs ; and if our authority is greater than theirs, it is because our means of enticement are also greater, and because we have been able to restrain, in a great degree, the inclinations which, in the natural state, would have excited the will of the animals which we have associated with us. The individuals which have passed from hand to hand, which have had several masters, and in which, from this circumstance, most of the natural disposi- tions are weakened, if not effaced, appear to shew the same do- cility toward every person ; they are subjected to the whole hu- man species. This state of things cannot exist with regard to animals that are not domesticated ; but the analogy recurs, when we consider the> individuals, whether isolated or in herds, which have never had but one master ; it is he alone whom they acknowledge as their chief, he only whom they obey ; every other person would be unknown, and would even be treated as an enemy by the species which do not belong to races over which domestication has exerted its whole influence, that is to say, as an individual would be treated when he presented him- Mammif'erous Animdh. 295 self for t!ic first time in a wild herd. The elepliant only allows himself to be led by the cornac whom he has adopted ; the dog itself, reared in solitude with its master, manifests a hostile disposition toward all others ; and every body knows how dan- gerous it is to be in the midst of a herd of cows, in pasturagv.^s that are little frequented, when they have not at their head the keeper who takes care of them. Every thing, therefore, tends to convince us, that formerly men were only, with regard to the domestic animals, what those, who arc particularly charged with the care of them still are, namely, members of the society which these animals form among themselves ; and that they are only distinguished in the general mass by the authority which they have been enabled to assume from their superiority of intellect. Thus, every social animal, which recognises man as a member and as the chief of its herd, is a domestic animal. It might even be said, that, from the moment when such an animal admits man as a member of its society, it is domesticated ; as man could not enter into such a society without becoming the chief of it. Should we now apply these principles to the wild animals, which are of a nature that renders them capable of subjection, we should see that there are still several which might become doniesticated, were it necessary to increase the number of those which we already possess. Although the apes and monkeys have the qualities of most importance ibr domestic animals, the social instinct and intellect, yet the violence and irritability of their character render them absolutely incapable of all subjection, and consequently excludes them from the number of animals which we are capable of asso- ciating with us. The American quadrumana, the makis, and the insectivora, are equally excluded ; for, were they social and susceptible of domestication, their weakness would render them useless. The seals, perhaps, more than any other carnivorous animals, together with the various species of the dog tribe, would be the best adapted to attach themselves to us^ and serve us ; and it is astonishing that the fishing tribes of our species have not trained them for fishing, as the hunting tribes have trained the dog to the chase. u 2 296 M. Cuvier 07i the Domestication of I shall not detain the reader with the didelphides, the glifes and the edentata ; the weakness of their body, and their limited intellect, prevent them from being employed by us for any use- ful purpose. But almost all the pachydermata, which are not yet domesticated, might be so ; and it is especially to be regret- ted that the tapir is still in a wild state. Much superior to the boar in size and docility, it would afford domestic races not less valuable than those of the hog, and whose qualities would cer- - tainly be different, for the nature of the tapir, notwithstanding some points of resemblance^ is very different from that of the boar. Yet the tapir, which has but feeble means of defence, is destroyed in America, where it is much sought after on account of the excellence of its flesh. Now, however Httle addition may continue to be made to the population of South America, the species peculiar to that country will gradually disappear from the face of the earth, :-r All the species of solipeda are as capable of being domesti- cated as the horse or the ass ; and the education of the zebra, the quagga, the dauw *, and the hemionus, would prove useful to society, and lucrative to those who might undertake it. Almost all the ruminantia live in herds, and most of the spe- cies of this numerous family are of a nature that qualifies them for domestication. There is one, in particular, and perhaps even two, that are already half domesticated, and which it is matter of regret that we do not see among the number of our domestic animals, for they would have two very valuable quali- ties, — they would answer as beasts of burden, and would fur- nish fleeces of excellent quality. The animals of which I speak are the Alpaca and the vicugna. They are double the size of our largest breeds of sheep ; the qualities of their fur are very different from those of wool, properly so called, and might be manufactured into cloths, which would partake of these quali- ties, and thus give rise to a new branch of industry -|*. ) * The Equus montanus of Burchell. ■f The difference of climate has been stated as an insurmountable obstacle to the naturalization of the animals of warm countries in our northern re- gions. This error would have been avoided, had the resources of nature and the extent of our means of acting upon animals been better known. By a si- milar error, the same difficulty has been opposed to the introduction of the Mammi/erous Animals. 297 I shall now bring my observations upon domestication to a ccfticlusion. My object has been to shew its true character, as well as the relations of the domestic animals tb man. It rests upon the propensity which animals have to live together in herds, and to attach themselves to one another. We obtain it only by enticement, and principally by augmenting their wants and satisfying them. But we could only produce domestic in- dividuals and not races, without the concurrence of one of the most general laws of life, the transmission of the organic or in- tellectual modifications by generation. Here one of the most astonishing phenomena of nature manifests itself to us, the trans- formation of a fortuitous modification into a durable form, of a fugitive want into a fundamental propensity, of an accidental habit into an instinct. This subject is assuredly worthy of ex- citing the attention of the most accurate observers, and of occu- pying the meditations of the most profound thinkers. This essay is undoubtedly far from containing all the de- velopements of which domestication is susceptible ; for, to treat of this subject fully, nothing less would be requisite than to con- vert into a science one of the most important branches of hu- man industry, the treatment of animals, or, in other words, to submit to laws founded in Nature — the blind practices and em- pirical rules according to which people are generally directed at the present day. But my researches will not be without use if they shew the principles according to which we may conduct ourselves, in order to act effectually upon the natural disposition of animals, the methods which should be followed for improv- ing them, and all that might be expected in this department from an enlightened and persevering direction of the means placed within our power. — Memoires du Museum d'^Histoire Naturelle. alpaca and vicugna into Europe, animals which live only in very temperate regions ; but it would not even be applicable to the tapir, although a native of the warmest countries. ( 298 ) On the History and Constitution (if Benefit or Fricndlij Societies. By Mr W. Fraseu, Edinburgh. Continued from p. 91. J-T was formerly remarked, that, in order to place Friendly Societies upon equitable and permanent principles, it is indispen- sably requisite that all their calculations for contributions and benefits should be founded upon such rates of sickness and mortality as are most likely to occur among their members, and also upon the rate of interest which will most probably be ob- tained for their money. The last of these subjects only now remains to be noticed, the two former having been already fully discussed. Rate of Interest By the statute 59th Geo. III. c. 128, Friendly Societies in England, whose rates of contribution have been certified by two actuaries to be adequate to -the allowances, and whose rules have been approved of by the Quarter Ses- sions of the Peace, are allowed to pay in their money to the Bank of Eng- land, in sums not under L. 50 at a time, to the account of the Commissioners for the reduction of the National Debt, and to draw interest on all such sums at the rate of threepence per cent, per day, or somewhat more than 4| per cent, per annum. They are likewise authorised to lodge any sum or sums below li. 50 in the Savings Banks, and to receive interest on these at the rate of 4 per cent, per annum. By these privileges, societies in England can al» ways calculate ujion receiving 4 per cent, interest at least, besides the advan- tage of having the whole or any part of their capital always at command, without the risk of loss. The above statute, however, only applies to England ; and, consequently, the Friendly Societies of Scotland are obliged to have recourse to other modes of investment. This being the case, the rate of interest to be assumed be- comes with them a question of some difficulty ; and the only guide which can with propriety be taken, seems to be therate of interest hitherto derived from the Public Funds ; for, although societies in Scotland have usually disposed of such portions of their capital as were not immediately required, in house pro- perty and other similar purchases, which produced a higher nominal rate of in- terest than could have been obtained for money on loan ; yet it has generally been found, after deducting occasional losses, and the heavy expences neces- sarily attending such investments, that the ultimate produce has not been so much as if the capital had been lent on heritable securities at a constant rate of 4^ or 6 per cent, interest. With the view of obtaining some approximation to the average rate of inte- rest in this country, Mr Babbage examined a period of ninety-two years of Mr W. Fraser mt Benefit or Friendly ^Societies. 299 peace and. war, from 1731 to 1822, and, by extracting from the tables collect- ed and published by M. Caesar Moreau, the highest and lowest price of the Three Per-cents each year, he found that the average annual price was 73.1 during 48 years of war, 80.14 during 44 years of peace, and 79.33 during 92 years of war and peace. According to these rates, he states the averages to be 4. 1 per cent, during war, 3.48 per cent, during peace, and 3.78 per cent, during war and peace ; or a little more than an average rate of 3| per cent, during the whole period of 92 years *. But Mr Finlaison, actuary to the National Debt Office, states, from the opportunities he has had, in his official situation, of observing the prices at which the Commissioners have purchased stock, that, upon a medium of the last forty years, the rate of interest realised from the investment of money in the Three Per-cents, the highest of all funds, has been precisely the same as if it had been invested at one uniform and constant rate of 44 per centum ; and that this observation holds equally true for the period of the last twenty years. Mr Finlaison therefore infers, that, for a long time to come, the interest of money in this country may be calcu- lated at 4 per cent f . From the^e circumstances, then, we would venture to conclude that Friend- ly Societies in Scotland may safely calculate upon 4 per cent, interest ; for, although some small sums must always be reserved to meet current demands, and be consequently unproductive of interest ; yet, on the other hand, it is to be remembered that they have no bad debts, that a very high rate of interest in the shape of fines is charged for all sums in arrear, and that it is general- ly practicable to make some better investments than even in the Three Per- cents. Contributions and Benefits. At the commencement of every Friendly Society, there must be necessarily fixed some standard rates of contributions and benefits, a minimum and maxi- mum age at which entrants shall be admitted, and the periods when the be- nefits shall commence, diminish, and cease. It does not follow, however, that one uniform rate of payments and allowances must be adopted for all the members by each society, as has hitherto been the almost universal practice ; but only that some certain rate of contribution and allowance be properly adapted to each other, so that other higher or lower rates may be therefrom deduced. In every rightly conducted society, therefore, a member should be allowed to take one or more of the benefits, and such allowance from each as he may find suited to his own circumstances. The benefits of Friendly Societies, it was formerly mentioned, usually con- sist of weekly allowances during sickness and infirmity, of sums payable at death, and, in some cases, of annuities to widows. The amount of allowance in sick- ness is generally regulated by its intensity or duration, — bedfast, walking and permanent sickness forming one class of payments, while sickness of the first, second, third, and fourth quarters, or periods of three months, and superannua- tion (I. e. sickness or infirmity of unlimited continuance), form another,— the * A Comparative View of the various Institutions for the Assurance of Lives, by C. Babbage, Esq. London, 1826. t Report of the Sdect Committee of the House of Commons respecting Friendly Societie* in 1825, p. 48. 800 Mr W. Fraser on the History and Constitutwhi (if rate of allowance in both diminishing progressively at each step of the scale/ It will therefore be obvious, that the expenditure for sickness must dejjend up- on the quantum which may occur, and the sum stipulate 7th e$Ut. vol ii. p. 477^ '\o iwiVMNtv; ^^'«^< or Frietully Societies. I N 7 ip\ SOI for aunuities wore combined with those for sick allowances, and calculated to commence at 21 years of age ; and the contributions for both sickness and annuities, were entirely to cease at fi5, when the 8ui)erannuation allowance became payable. By this plan, however, of combining the payments for sick- ness and annuities, many societies, and even some actuaries, were led into er- ror, it having been supposed that the contributions in the above table were suitable for sickness during the whole period of life, instead of only to the age of 65 •. But the general failure of Friendly Societies cannot be wholly attri- buted to this mistake, by far the greater number of them having adopted no calculation whatever. '.The Committee of the Highland Society of Scotland having taken as a standard the average of the whole sickness in each decade reported to them by Friendly Societies, resolved, for suflicient reasons stated by Mr Oliphant in his Report, Is/, To commence their computations at the 21st year of age) 2■ then -j 5 . . 3s. . .15s. Permanent ditto. Is. 8d. J Jl3 . . Is. 8d. . . 5s. 10 30s. And which 30s. being divided by 10, would give 3s. for the uniform rate of allowance. Again, if the allowance were, for Sickness of the 1st quarter, Qs.\ ^ | 2| multiplied by 6s. would equal 15s. Ditto 2d & 3d do. 3s. V ^ -J 3 . . 38. . . 9s. Do. of unlimited duration, ls.)*^JU| . . Is. . . 4s. 6d. 10 28s. 6d. And which 28s. 6d. being divided by 10s. would give 2s. lOd. for the uniform rate of allowance *. Hence by the above method, it is easy for any new society to ascertain pretty accurately the average rate, of payment, and the corresponding contri- bution, until its own experience afford more correct data. These preliminary points being fixed, various tables were prepared by Mr John Lyon — which were subsequently revised and approved of by several eminent calculators — for the use of Friendly Societies, with ex- planatory remarks as to their construction, uses, and application. In these tables is shewn the condition of the supposed society in every stage during its progress, and means are thereby afforded of instituting comparisons with the successive steps in the past or future progress of actual societies, as they advance from the lowest state of burden, with increasing capital, to the high- est state of burden, when the capital ceases to accumulate, begins to decline, and is finally exhausted. From those tables the following one has been de- duced. ♦ Highland Soc. Rep. pp. 108, 196. Beuf'fit or Friendly Societies. SOS TABLE sjicwing tJie Single and Annual Contributions (the latter payable quarterly) for assuring Ten Shillings * per week during Sickness till 70 years of Age ; Ten Pounds per annum for life after 70 ; and Ten Pounds at Death. Assiinmce of Weekly Assurance of an Annuity Assurance of £ 10 on 1 Age. Pay in Sickness. of A* 10 after 70- Deatli. TOTAI^ 1 Single Annual Single Annual Single Annual Singl e Annual Contrib. Contritu Contrib. Contrib. Contrib. Contrib. Contrib. Contrib. L. 8. D. L, 8. D. L. S. D. L. 8. D. L. s. D. L. 8. D. L. 8. D L. S. D. 21 9 1 2 10 3 2 54 3 5| 3 54 3 Of 15 4 1 16 9| 22 9 4 u 10 2| 3 5 74 3 74 3 I 44 3 5 15 11 u 17 34 23 9 7 24 10 6 3 8 Hi 3 10 3 2 H 3 6 15 18 6 17 10 24 9 10 5 10 n 3 12 54 4 1 3 3 4| 3 7 16 6 3 18 54 25 9 13 10 11 04 3 16 14 4 4 3 4 54 3 8 16 14 4^ 19 04 26 9 17 44 11 H 4 4 7 3 5 64 3 9 17 2 11 19 84 27 10 1 03 11 8 4 4 Oi 4 104 3 6 8 3 10 17 11 94 1 44 28 10 4 10| 12 04 4 8 ^ 5 2 3 8 1| 3 114 18 1 54 1 1 If 29 10 8 104 12 H 4 12 11 5 6 3 9 0| 1 18 10 104 1 1 114 30 10 13 04 12 9 4 17 84 5 10 3 10 4 24 19 1 04 1 2 94 31 10 17 34 13 2 5 2 8| 6 24 3 11 7i 4 19 11 7i 1 3 8| 32 11 1 8 13 n 5 8 04 6 7 3 13 04 54 20 2 8^ 1 4 7i 33 11 6 54 14 04 5 13 n 7 04 3 14 31 7 20 14 6 1 5 8 34 11 11 ^\ 14 64 5 19 9| 7 6 3 15 iJt 9 21 6 10| 1 6 94 35 11 16 ^\ 15 0| 6 6 24 8 3 16 11 21 19 n I 7 llf 36 12 1 11 15 A 6 12 114 8 6 3 18 44 5 1 22 13 3 1 9 24 37 12 7 54 16 A 7 04 9 2 3 19 10 5 3 23 7 3f 1 10 74 38 12 13 n 16 n 7 7 7| 9 94 4 1 44 5 5 24 2 24 1 2 04 39 12 19 41 17 6 7 15 10 10 6 4 3 Of 5 7 24 18 34 1 13 7 40 13 5 n 18 24 8 1 04 11 3 4 4 64 5 94 25 11 4| 1 15 3 41 13 12 4| 18 iii 94 8 13 84 12 1 4 6 li 6 26 12 24 1 17 Of 42 13 19 2 19 9 3 5 13 4 7 8| 6 24 27 10 31 1 19 43 14 6 Oi 1 8 9 13 9 14 4 9 4| 6 54 28 9 2 2 1 14 44 14 12 114 1 1 7 10 4 84 15 1 4 11 14 6 84 29 8 94 2 3 44 45 14 19 94 1 2 n 10 16 H 16 34 4 12 lU 7 30 9 1 2 5 104 46 15 6 104 1 3 7 11 9 04 17 74 4 14 8 7 34 31 10 7 2 8 54 47 15 13 84 1 4 8 12 2 64 19 1 4 16 54 7 7 32 12 84 2 11 4 48 16 24 1 5 94 12 16 11 1 84 4 18 4 7 11 33 15 54 2 14 5 49 16 6 44 1 7 13 12 24 1 2 64 5 3 8 34 34 18 10 2 17 9| 50 16 12 1 1 8 3 14 8 7 1 4 64 5 2 3i 8 84 36 2 1143 1 6 1 The payments required for annuities to widows have been here omitted, because the tables for that scheme were calculated upon the supposition, that, in practice, all the contributions for the different benefits would be conjoined, and, therefore, that although a member should become a widower, he would still be under the necessity of making full payment to all the schemes. It is but natural to suppose, however, that few would continue to contribute to a fund from which they could never derive any benefit, and, by abandoning the society, would render all the cal- culations for the scheme useless. The payments for such benefits, therefore, should be entirely distiiict from all other contributions, and calculated to cease at the death of the wife, as well as at the death of the husband ;— but, It is presumed, that very few of the working classes will be found to insure for this benefit, the same amount of contribution being required for a widow's annuity of L. 10 per itnnum as for L. 100 at the death of her husband ; besides, that the former benefit is uncertain, while the latter is certain, and also of more advantage to the widow. * It was found, that au annual contribution of lOs. would afford a weekly sick allowances of lOs. 3id. from 21 to 70 years of age, but it was reconuncnded, that 10s. only should be the stipulated allowance. 304 Mr W. Fraser on the History and Constitution of By the above table, then, an entrant at the age of 29, for a weekly sick al- lowance of 1 Os. from ihat age till completing his 70th year, will require to pay either an annual contribution of 12s. 4 id. during the same period, if he live so long, or a single payment of L. 10 : 8 : 10^ at entry, to supersede all future contributions ; — for an annuity of L. 10 during life after 70, either an annual contribution of 5s. 6d. till 70, or a single payment of L. 4 : 12 : 11 ; and for L. 10 at death, either an annual contribution of 4s. Id. till 70, or a single payment of L. 3 : 9 : Of. Thus all the contributions are to cease at 70, and each member is supposed to become free (i. e. entitled to benefit, in the event of sickness or death) immediately upon entry ; but numerous rules and problems are given in the Report, by which societies may determine — the rates of contributions or al- lowances, should members not become free until after a certain number of years — the effects of varying the rates of allowances according to the intensity or duration of sickness — the mode of ascertaining the stock which any society ought to be possessed of, in order to fulfil all its engagements, — and, in short, every requisite information is afforded for the proper management of Friendly Societies. For all these details, however, we must refer to the Report it- self. The tables which may next be considered, are those constructed by the Reverend John Thomas Becher, of Southwell in Nottinghamshire. This gentleman has, of late years, devoted much time and attention to the im- provement of Friendly Societies, and was the founder of the Southwell So- ciety in 1823. In his calculations, he adopted, as formerly remarked, rather a higher rate of sickness than that which had been assumed by Dr Price — the Northampton rate of mortality — 4 per cent, interest on payments for allow- ances during sickness and old age— and 3 per cent, on those for allowances at death. The contributions in his tables were therefore higher than in those of the Highland Society. The following statement by Mr Becher will shew the difference between the two, upon the annual contributions payable by twenty-five persons, from the 21st to the 45th years of age. Ages from 21 to 45 Years, both inclusive. Allowance of 10s. Weekly Bed-lying Pay and 6s. Walk- Pay in Sickness. '1 Anniial Contribution. Annuity of 5s. Weekly after 70. Annual Contribution. Assurance of L. 10 on Death. Annual Contribution. TotaL Annual Contribution. Southwell Tables, Scotch Tables, . 19 13 9 114 ^e s. d. 17 15 3 13 34 £, s. d. 9 5 19 104 £ s. d. 46 4 32 10 14 Excess of Southwell Tables, 5 18 94 4 14 114 3 14 13 13 104 Note by Mr Becher. " The Scotch Tables give the Annual Contributions for a permanent Allowance in Sickness, without reference to Bed-lying Pay, or Walking Pay, which must be ad- justed according to circumstances. Therefore I have here taken the contributions according to the Scotch Tables, for ^s. 6d. weekly permanent pay in sickness, of every denommation ; assuming for our present purpose, that this equals a weekly allowance of 10s. Bed-lying pay, and 5s. Walking pay, being the medium between these two last mentioned allowances; or, in other words, that the periods of sickness entitling a membn to Bed-lying pay and to Walking pay, correspond with each Benefit or Friendly Socklks. S&5 other. This hypothesis atlvances the annual payments of the Scotch Tables for sickness higher than they ought to stand, and consequently raises the amount nearer to the Southwell Tables." • It thus appears that the difference in the annual contribution is no leas than 42 per cent. The tables of the Southwell Society, too, are only gra- duated quinquennially, while those of the Highland Society are graduated annually ; that is, by the quinquennial scale, one person entering at 30 years of age, and another at 34, would both pay the same sum for the same benefit ; while, by the annual scale, the payments are either increased, or the allowan- ces diminished, for each year an entrant is older than the minimum age for entry. In this respect, therefore, the Southwell tables are certainly defec- tive. One of the peculiarities of Mr Becher's system, however, and worthy of being imitated by such societies as combine all their payments, is, that " the tables of calculations are so framed, that whoever makes an assurance in sickness (which terminates at 65) must, at the same time, assure an annuity after 05, and a payment on death, which combination has been devised, with an inten.. tion of preventing imposition or inequality. Thus, were a sickly person to effect an assurance, what was gained in sickness would be lost in the annuity. On the other hand, should the healthy members receive but a small portion of the pay in sickness, there is a greater probability of their living to enjoy the annuities. By a similar arrangement, the annuities and the assurances on death reciprocally co-operate. If the member dies prematurely, the con- tributions on account of the annuity become available towards discharging the payment on death ; but if the life be prolonged, the assurances on death, after a certain period, may be regarded as applicable towards the annuity. So that, by introducing a system of balanced interests, it seems scarcely possible to de- fraud the institution, or to preclude the attainment of its benevolent objects "f." Since the institution of the society at Southwell, several other societies have been formed in the neighbouring counties, upon a very extensive scale, and all of whom have adopted the Southwell tables. Mr Becher was very minutely examined by the Committee of the House of Commons in 1 825, with regard to the calculations of these tables, and the data on which they were founded. Several objections were stated to them by some of the other gentlemen examined, particularly as to the rate of mortality and intew rest Mr Becher had assumed ; in which objections the Committee ultimately concurred, but approved of the rate of sickness. He was again examined in 1827, and his evidence, together with the opinion of the Committee, respect- ing the rate of mortality, will be found in the former number of this Journal Mr Becher subsequently communicated a set of tables to the Com- mittee, which he had furnished to a society in Dorsetshire, and from which the following table is extracted. With reference to this table, Mr Becher remarks, that the contributions are to be invariable, and payable once in every calendar month, till the age of 65, when the contributions for the whole benefits, as well as the allowances during sickness, are to cease. The table is founded upon the same principles as the Southwell tables, except that in this table an annual graduation of ages, and interest at the rate of 3^ per cent, have been adopted. Although the Northampton rate of mortality has still been taken, it is said that the adop- tion of 3^ per cent, interest, raises the contributions for sickness and annui- * Obsarvations on the Report of the Sdect Committee of th« House of Comnoons on the hvm of Friendly Societies in 1825. Newark 1826. 4s. „ . . , .-,-,.- , ll .. -^-}-, - , '- [ t Parliamentary Report in 1825, p. 176. 306 Mr W. Fraser on the History and Constitutkm of ties in old age as high as if the pre'miums had been computed by the Carlisle tables, or those constructed upon the experience of the Equitable Society of London, at the rate of 4| per cent, interest. It may here be remarked, how- ever, that the single payments required from entrants to the sickness fund, seem to have been calculated upon some principle very different from that adopted by the Highland Society. By their table, p. 305 of this Journal, these payments progressively increase with the advance of age, whereas by Mr Becher's table they periodically decrease. Thus, according to him, the single payment from an entrant at 21 years of age is £ 1 : 17 : 3, and at 24 only £1:16:1; at 30, £ 2 : 8 : 5, and at 39 only £2:1:5; at 40, £ 2 : C : 9, and at 49 only £ 1 : 15 : 7, or Is. 8d. below the sum payable at the age of 21. From Mr Becher's abilities as a calculator, there can be little doubt of the total results of his tables being found correct by such societies as combine all their schemes ; but it is obvious that this scale of single payments for benefit during sickness could never be acted upon by societies who should keep all their pay- ments and benefits separate— a system which it is most desirable to introduce. TABLE shewing the Single and the Monthly Contributions for assuring Two Shillings per Week during Sickness Bed-lying Pay^ and One Shilling per Week Walking Pay : a Weekly Allowartce of One Shilling after the Age of 65, and Two Pounds on Death. Assurance of Weekly Assurance of Is. Assurance of L. 2 ] Pay in Sickness. Weekly Pay after 65. on Death Total. Age last Firth- """*" ^^ Day. Single Monthly Single Monthly Single Monthly Single Monthly Contrib. Contrib. Contrib. Contrib. Contrib. . Contrib. Contrib. Contrib. £ s. d. s. d. £ s. d. s. d. £ s. d. S, d. £ s. d. S. d. 21 1 17 3 2\ 1 11 10 2 15 10 1 4 4 11 H 22 1 16 10 2i 1 13 6 2 16 1 4 6 4 5| 23 1 16 6 2\ 1 15 1 H 16 3 1 4 7 10 5i 24 1 16 1 2i 1 16 10 H 16 5 H 4 9 4 5| 25 2 3 8 2| 1 18 9 n 16 7 u 4 19 H 26 2 3 2 2| 2 8 2a 16 10 n 5 8 6| 27 2 2 7 2| 2 2 9 2| 17 H 5 2 4 6| 28 2 2 1 2a 2 5 3 17 3 H 5 4 4 7 29 2 1 6 2| 2 7 3 H 17 5 H 5 6 2 n 30 2 8 5 34 2 9 9 3i 17 8 H 5 15 10 8 31 2 7 9 3i 2 12 6 3| 17 11 n 5 18 2 8i 32 2 7 34 2 15 2 4 18 1 H 6 3 H 33 2 6 4 3| 2 18 1 4i 18 4 i| 6 2 9 9 34 2 5 7 3i 3 1 2 4i 18 7 H 6 5 4 9* 35 2 4 9 H 3 4 6 ^ 18 10 H 6 8 1 94 36 2 4 3| 3 8 H 19 1 n 6 11 I 10 1 37 2 2 2 3i 3 11 9 54 19 4 n 6 13 3 104 38 2 2 4 34 3 15 8 6 19 7 2 6 17 7 Hi 39 2 1 5 3i 3 19 11 H 19 10 2 7 1 2 111 40 2 6 9 3| 4 4 5 7 1 2 7 11 2 Oi 41 42 2 2 5 4 8 6 3| 3a 4 9 3 5 n 8i 1 1 1 8 2 2 7 15 7 19 7 2 4 14 43 2 3 4 3| 5 9 1 11 2 8 4 3 H 44 2 2 2 3| 5 5 11 9| 1 1 3 2 8 9 4 sk 45 2 1 31 5 12 3 m 1 1 6 ^ 8 14 9 H 46 1 19 9 3| 5 19 1 111 1 1 10 H 9 8 6| 47 1 18 4 3| 6 6 5 1 0| 1 2 2 H 9 6 11 6| 48 1 17 3| 6 14 3 1 n I 2 5 l\ 9 13 8 H 49 1 15 7 3f 7 2 9 1 4 1 2 9 10 1 1 10 Benefit or Friendly Societies. S07 The sums in this table, as well as those in the one deduced from the tables of the Highland Society, are necessary for defraying the benefits, without allowing any thing for management. The Committee of the latter body, however, recomragnded that a sum equal to 10 or 12 per cent, on the contributions should be levied, in one way or other, for this purpose ; and Mr Becher states, that, in those societies in which he has been engaged, each mem- ber must be one year in the society before being entitled to benefit, which is equal to about C^ per cent, on the annual contributions; — that the difference between the excess of interest received from government above that calcu- lated in his tables, is equal to a profit of rather more than 1 per cent. ; — that the difference between paying the contribution monthly, and paying it at the conclusion of the year, is equal to about 2| percent; — that in converting deci- mals or other fractions into money a considerable surplus arises, by always making the even sums in favour of the society ; — and, that fines and forfei- tures are considerable sources of emolument. It is therefore assumed, that 12^ per cent, computed upon the annual income of such institutions, or 2s. 6d. , in the pound, may be applied by societies, placed in such circumstances, to- wards defraying the expences of management, and medical attendance ; and that should the management exceed that amount, such excess must be de- frayed either by voluntary donations or subscriptions, or by calling upon each member for an additional contribution •. The Committee of 1825, however, consider it as " of some importance, that the addition made for management should not be, as in some instances it is, a per-centage upon the contribution, inasmuch as the expence of management bears a proportion rather to the number of the members than to the amount of their payments "{*•" The only other table of Authority for the use of Friendly Societies, is one constructed by Messrs Finlaison and Davies, actuaries. These gentlemen were required, by the Committee of the House of Commons in 1827, to con- struct tables, " shewing the single and monthly payments to be made by males and females respectively, of every age, from 18 to 50, to insure a weekly pay- ment in sickness of 10s. bed-lying pay, and 5s. walking pay ; and to insure also a superannuation allowance of 5s. weekly to commence at 70, at which age the sickness allowance was to cease, as well as the monthly payments of members on account thereof; — also another table, shewing the single and monthly payments to be made till death, by males and females respectively of every age from 18 to 50, to insure a sum of L. 10 on death." This desire . was accordingly complied with, except in so far as regarded a separate table for sums payable at death, the actuaries having conceived it to be more expe- dient that all the three benefits should be combined. With reference to the data on which their calculations were founded, those gentlemen remark, that the rate of sickness which they had adopted was a medium of that resulting from the returns made to the Highland Society of Scotland by Friendly Societies, and of that from the Returns made to the A(\jutant General's Office as experienced by the whole Army quartei*ed in England during the years 1823-4. Such a mean exhibits lyVs weeks under the age of 60 ; 2 /jV weeks from 60 to 60 ; and 7iV5 weeks from 60 to 70. It will here be observed, that the annual sickness at all ages between 20 and 50 is considered to be at the same rate,— Mr Finlaison being of opinion, that * Report of 1827, p. 21. and 121. t Report of 1826, p. 15. 308 Mr W. Fraser on i^ie History and Constitution of whether one uniform rate of sickness under 50 be assumed, or a graduated rate, increasing according to age, the result, from the nature of the calcula- tion, will not materially differ, as far as practical purposes are concerned. This rate of sickness under 50 is the same as that assumed for the construc- tion of the Southwell tables; and which rate, as formerly remarked, is double the average of the sickness for those ages reported to the Highland Society. The actuaries, although perfectly aware of the difference between the mortality of males and that of females, nevertheless determined, for several reasons, to adopt the average mortality of the two sexes, — Mr Davies taking the Carlisle observations, and Mr Finlaison the mean of what he had ob- served to prevail among the separate sexes of the government annuitants^. They conceived that no practical danger would result from this course of pro- ceeding, as the rates would be sufficient for any society composed of equal numbers of each sex ; and rather more than sufficient in ordinary cases, as in general the males greatly predominate in Friendly Societies. The rate of interest calculated upon is not stated, but it is presumed, from a former communication by Mr Finlaison *, to be 3 per cent. In that communication he stated, that, as Friendly Societies are subject to loss by im- position and other disadvantages, it was but proper to secure three chances in their favour. These were, 1st, To assume that money can only be improved at the rate of 3 per cent, per annum, such interest being payable half yearly ; 2d, That the decrement of life among Friendly Societies should be taken at the same rate as that which prevails among the Government annuitants, who are aU in the higher or better ranks of life ; and, 3d, That, in calculation, no abatement ought to be made for a reduced allowance, called Walking Pay, during convalescence, or any protracted chronic illness. The savings arising from such sources, Mr Finlaison conceived should be considered as a reserv- ed profit, to stand against imposition, or to counteract any unforeseen disas- ter ; and in this opinion Mr Davies concurs. .. Proceeding, then, upon the above data, these gentlemen made their caJU culations separately ; and, upon the results being compared, they were found so nearly to agree, as that if an entrant, at any age between 19 and 41, were charged by Mr Finlaison's tables, according to his age at the last birth- day, and by Mr Davies's tables, according to his age at next birth-day, the rate would be within one farthing of the same sum. A mean was therefore taken of their separate calculations, and the following Rules and Tables are the result. " RULES and TABLES recommended hy Messrs Finlaison and Davies, for adoption hy Friendly Societies in general. " The Select Committee of the Honourable House of Commons, on Friend- ly Societies, having required us, the undersigned Actuaries, to consult to- gether, and jointly to recommend such a scale of rates as might be sufficient, in practice, to warrant the benefits undermentioned ; we have accordingly, for the reasons set forth in the annexed paper, concurred in recommending the rates comprehended in the following brief rules, which, with ordinary precautions to prevent abuse, will, in cur judgment, be found adequate to in- sure the objects in view. " 1. Any Society, formed for the mutual relief of its members, inNgickness * Report in 1825, p. 137- Benefit or Friendly Societies, 309 nnd old age, may consist of persons of either sex ; the females to be admitted on precisely the same terms as the males — 2. Its objects should be limited to Three benefits ; viz. A Weekly allowance of Ten shillings in sickness, ceasing at the age of 70 ; a Weekly allowance of Five shillings, commencing at the age of 70, and continuing for life afterwards ; and a sum of £ 10 for Burial money, payable whenever a member shall decease. — 3. No one shall be received a member who is more than 50 years old, or who is in any degree unhealthy at the time when proposed for admission. — 4. No payment shall Be required from any member after the age of 70 ; but up to that age, every contributicm is payable, whether the party be in sickness or in health.— <5. Who- ever is admitted at 31 years of age, shall afterwards pay a monthly contribu- tion of three shillings and three halfpence.— 6. Any one admitted younger than 31, shall pay three farthings less every month, for each year of age short of 31 — 7. Any one admitted older than 31, shall pay seven farthings more every month, for each year of age above 31, and under 41. — 8. Whoever is admitted at 50 years of age, shall pay seven shillings and nine-pence every month — 9. But whoever is admitted between 40 and 50, shall pay four-pence less every month, for each year of age short of 50. — 10. None of those contri- butions shall ever be applied to any purpose, but to the three objects above stated : And the expence of management, and all other charges whatsoever, shall be defrayed from the subscriptions of honorary members, if any ; from admission-fees and fines, or by means of separate assessments expressly made for the occasion." The following Practical Table is then given : " TABLE of the Single and Monthly Payments^ for insuring in Sickness a Week- ly Allowance of Ten Shillings Bed -lying Pay, and Five Shillings Walking Pay, ceasing at the Age of ^0 : An Allowance for Life of Five Shillings Weekly, after the Age of 70, and a Sum of £10 payable at Death. — The Monthly Payment to cease at the Age of ^0. Age at last Birthday before Admission. Single Monthly Age at last Birthday before Admission. Single Monthly Payment. Payment. Payment. Payment. £ s. d. £ s. d. £ s. d. £ s. d. 18 24 18 8 2 34 34 33 8 54 3 6i 19 25 5 74 2 4 35 34 4 4 3 8 20 25 13 2 44 36 35 1 14 3 9| 3 114 4 If 4 4 4 6 21 22 23 24 26 10 26 3 114 26 17 64 27 6 7 2 5i 2 6 2 64 2 7i 37 38 39 40 35 19 1 36 18 5 37 18 104 39 4 25 27 16 04 2 8 41 40 3 5 4 8| 26 28 5 114 2 9 42 41 8 64 4 114 27 28 16 34 2 9| 43 42 14 74 5 24 28 29 7 4 2 11 44 44 12 4 5 6 29 29 19 2 11| 45 45 11 6 5 94 30 30 11 4 3 14 46 47 2 24 6 1} 31 32 33 31 4 6 31 18 54 32 13 2 3 2i 3 3} 3 5 47 48 49 50 48 14 44 50 8 54 52 4 11 54 3 34 6 6 6 111 7 4| 7 n " We recommend the above, as JANUARY— MARCH 1828. Practical Table, which may be X SIO Mr W. Fraser on the History and Constitution of used by Friendly Societies. If any other amount of benefit than those to which it refers, should be desired, the single or monthly payments are to be increased or diminished accordingly ; but the several sorts of benefits are al- ways to bear the same proportion one to the other, which they bear in this Table. (Signed) '* John Finlaison, Actuary of the National Debt. " Griffith Davies, Guardian Assurance Office.^ Such, then, is a brief detail of the principal rates of contributions which have been proposed for allowances to the members of Friendly Societies, during sickness, old age, and at death. Regarding the Tables in the Re- port of the Highland Society, the Parliamentary Committee of 1827 have given no opinion ; but it is to be presumed that they concur with the Com- mittee of 1825, in considering that the rates of sickness and mortality adopt- ed in the construction of those tables would be unsafe to calculate upon for societies in England. The Committee, however, conceive, that either the tables of Mr Becher, or that of Messrs Finlaison and Davies, may be safely adopted by such societies, their remarks upon both being as follows : — " On the whole, then, your Committee are of opinion, that the Dorsetshire tables, or Mr Becher*s new tables, having the annual graduation, may safely be adopted ; provided, 1st, That a separate provision be made for the expences of management, by fines, admission fees, voluntary contributions, or otherwise. 2dly, That the proportion of females do not greatly exceed one-third of the whole number of members. 3dly, That the assurance for a superannuation allowance be always connected with a life assurance requiring a monthly pay- ment of half its amount. 4thly, That the present rate of interest allowed on debentures be continued. " Your Committee are decidedly of opinion, that the societies should be formed upon the largest scale possible. It is very difficult to fix a number of members below which no society ought to exist ; but if they were required to give an opinion upon this point, they would say that it would be imprudent to establish a society with fewer than two hundred members. " It will be particularly desirable for the smaller societies, indeed it might be expedient for all new societies, to make seventy the age of superannua- tion ; up to that age, many men are very capable of maintaining themselves by work. The payment necessary for such an allowance commencing at the age of 70, is little more than two-thirds of that which is required, if the al- lowance commences at 66. But, on the other hand, the sickness payment must be somewhat increased, if it is to provide for sickness occurring be- tween C5 and 70. And if the superannuation be made perfectly safe, there will be no necessity to have recourse to a life assurance for supplying its de- ficiency. It is assuredly much better, that the contribution for each con- tingency should be sufficient in itself; and though your Committee agree with that of 1825, in deeming it highly important, with the view of avoid- ing pauperism, that a superannuation allowance should always be provided, they do not think it absolutely necessary that a sum should be assured on death. Benefit or Friendly Societies, Sll " The actuaries, however, Mr Finlaison and Mr Griffith Davies, whom they desire l^ %2 312 Mr W. Fraser on the History and Constitution of in healthy or unhealthy, dangerous or not dangerous, employ- ments. Any society or societies keeping these circumstances irt view, and also considering the vast importance of at first secur- ing the permanency of their schemes, may easily judge of the rates most suitable to themselves. But, even with the most cor- rect calculation of which the subject will admit, differences be- tween the actual and estimated expenditure will frequently oc- cur, arising either 'from the members being too few in number to afford a fair average of sickness and mortality, or from epi- demics, and other similar causes. "It is therefore desirable, that societies should be made fully aware, that, while correct calculation may do much in placing their schemes on a more secure footing than hitherto, still there are contingencies a- gainst which calculations made beforehand cannot guard, which can only be obviated by attention on their own part to the pra- gress of the societies'* affairs, and by accommodating their ar- rangements to their circumstances a& occasion may require */' For this purpose, a correct record must always be kept of the society's transactions, particularly the ages of the members, and the sickness and mortality which occur at the different ages. These being known, the affairs of any society may be periodi- cally balanced, the amount of the past and future contributions compared with the value of the future allowances, and the abi- lity or inability of the society to fulfil its engagements correctly ascertained. By the statute 49th Geo. Ill, c. 12, it is enacted, that where the rules of any society provide for all disputes between the in- dividual members and the society being decided by arbitration, the opinion or order of such arbiters shall be final and binding on all concerned, without the power of appeal to any court what- ever ; and it is very properly recommended by the Committee of the Highland Society, that it should be an indispensable rule in every Friendly Society, that all disputes between the society and any of its members shall be referred to arbitration. The great utihty of such a law must be evident to every one in the least .acquainted with these institutions, not only on account of a great expence being thus saved both to societies and indivi- duals, but also on account of such questions being generally more maturely considered by arbiters, than by the inferior judica^- • Highland Society's Report, p. 281. Benefit or Friendly Societies. 313 tories to which they are limited,— a striking illustration of which shall be given in our next Number. It is not, there- lore, without regret that we see it recommended by the Com- mittee of 1825 that the law of arbitration should be repealed. If this suggestion be adopted, Friendly Societies will be deprived of one of their greatest safeguards, and be subjected to the irre- vocable decisions of the Petty Sessions of the Peace, which are frequently composed of persons but very imperfectly acquainted with the principles of the contract of mutual assurance govern- ing such institutions, and but too apt to pay little or no atten- tion to the regulations which they themselves have sanctioned, and on which alone they ought to found their decisions. It has been already remarked, that the statute by which Friendly Societies in England are allowed 4J per cent, from Government for their money, does not extend to Scotland. If this important benefit is still to be granted by the statute of which notice has been already given by Mr Courtenay in the present session of Parliament, it is trusted that the Friendly Societies of Scotland will not be again excluded. If they are willing to comply with all the conditions required from those in England, it is but fair that they should be likewise entitled to the same privileges. Both kingdoms are under the same government — both are under the same system of taxation ; therefore, " where all contribute alike, all should receive alike ; and it is only where double benefits are wanted, that they should be refused, or paid for accordingly." Friendly Societies are exempted by statute from all stamp- duty upon bonds granted by their treasurers; and it is pre- sumed, that it was only from their payments being hitherto so small as not to require stamps, that they were not exempted from all stamp-duty whatever. As these societies, however, will be now upon a more extensive scale, and be managed upon the same principles with the higher assurance companies, it is to be feared that receipt, policy and other stamp duties will become a very heavy burden, and one which they will be ill able to bear. Ft is therefore also hoped, that this subject will not be overlooked by the legislature in the enactment of any new law for the be^ nefit and encouragement of these laudable and highly use^:iii- sUtutions. .,.)/ .,,i^^^^>f; ^.Ir^ic^i j^f^^I " (To be continued,) ( 314 ) A SJiort Sketch of the Geology ofNithsdak, chiefly in an Eco- nomical point of Vieiv, and contrasted with that of the Neigli- bouring Valleys. By James Stuart Menteatii, Esq. Young- er of Closeburn, Member of the Wernerian Natural History Society. * 1. General account. — 2. Basin of New Cumnock. — 3. Basin of Sanquhar. — 4. Basin of Closeburn.— 5. Basin of Dumfries. — 6. Upper and Low- er Basin of Annandale. — 7- Upper and Lower Basin of Eskdale — 8. Annandale and Eskdale contrasted with Nithsdale — 9. Basin of the Dee contrasted with Nithsdale. 1. jL he county of Dumfries is traversed from N. to S. by three rivers, viz. the Nith, Annan, and Esk. These rivers, in their course from the mountains to the Sol way Firth, pass through a country in which not only the mountains, hills, and valleys, but also the rocks and soils, exhibit much to interest the geologist and agriculturist. The general features of the county have been already detailed by Professor Jameson in the " Mineralo- gy of Dumfriesshire.'''' We propose, therefore, in the follow- ing remarks, to confine our attention principally to the districts traversed by the river Nith. The Nith, probably the most beautiful river in the county, rises in Ayrshire, and flows through the basin of Cumnock, in that county, into Dumfriesshire. In its progress through this county, it flows through other three basins, viz. those of Sanquhar, Closeburn, and Dumfries, before it reaches the Sol- way Firth. Having described the Nith as rising in the hills of Ayrshire, and flowing through the valley of New Cumnock before it en- ters Dumfriesshire, it may be proper first to consider the basin of New Cumnock. 9>. Basin of New Cumnock. — It is bounded on the west, north, and east, by greywacke, forming rather low hills, which are far from pleaang in their appearance. It is separated from the basin of Sanquhar by a ridge of greywacke, nearly three miles broad. The length of the basin is about ten miles, and the breadth ^ve miles. The coal formation fills all the central parts of this basin, and even spreads itself on the east over the • Read before the Werneriau Natural History Society, 9th February 1828. 2 Mr Menteath 07i the Geology of Nilltsdale. 315 sides of the greywacke hills. Coal is worked in several places. It occurs near the surface, in thick seams, from nine feet to. twelve, but as yet no accurate borings have been made to ascer- tain the number of beds of it which this basin contains. The best sort is found at the great elevation of upwards of 1000 feet above the sea, at Mansfield, on the north side of Corson- scon Hill. The coal of Mansfield is a cubical and splinty coal, raised in very large square pieces. There are three principal beds, of nine, eleven, and twelve feet in thickness. Not far from the pits where the coal is now raised, there occurs a curious coal deposit, which appears to be a small isolated basin. This bed, which is believed to be the three above mentioned beds united into one, is no less than thirty feet thick, and is immediately under a peat-moss, which does not exceed twenty feet in thick- ness, and is in a complete state of decomposition. Imbedded in the seam of coal of twelve feet in thickness, we meet with a bed of cannel-coal sixteen inches thick ; and lately another bed of the same coal, twenty-t^v^ inches in thickness, has been found in an isolated situation. Both these are very free of sulphur. To the westward, nearly between the sources of the Afton and Nith, a bed of cannel coal, three feet thick, is met with, but being sulphurous, is not adapted for the prepara- tion of gas. On the estate of Mansfield, there is a bed of glance coal or anthracite {blind coal) four feet thick. The coal is associated with slate-clay, bituminous shale, and sandstone. The sandstone is of a yellow colour, but soft, and therefore of inferior quality. The carboniferous or mountain limestone which underlies the coal of the New Cumnock basin, is found in great quantities, and may be s^d to fringe the coal of this basin. There are se- veral liraeworks in it, where it is burned and prepared for mar- ket. On the side of Consonscon Hill, which is greywacke, and at a considerable elevation, the limestone, which is of an excel- lent quality, crops out. It is burned, and supplies a great range of country, not only in this basin, but that of Sanquhar. On the banks of the Afton, one of the tributaries of the Nith, before it leaves the New Cumnock Basin, galena or lead glance occurs in transition rocks, and has been wrought for a consider- able time, but to no great extent. 316 Mr M cnteath on the Geology?/ of Nithsdale. The soil of New Cumnock Basin is clayey, stifl' and tena- cious, such as is generally found covering the coal formation. The herbage, though abundant, is coarse. It is, however, well adapted for the food of the dairy cow ; and, accordingly, the farmers of this basin have availed themselves of this natural ad- vantage of their situation, and employed the lime which is found every where at hand in ameliorating the soil, and improving the pasture. Much has been ploughed far up the hills, and artifi- cial grasses introduced ; and, following up this system, they have, by great care and expense, collected a breed of the Cunynghame or Dunlop cow, a small short horned animal, unequalled, per- Jiaps, by the breed of any other district of Ayrshire. They make great quantities of butter and cheese, which is exported to all parts of the kingdom. The Basin of New Cumnock, though described as one of the series of basins in the course of the Nith, cannot correctly be viewed as a separate coal formation, but as forming a part of that of the great basin of the Ayr, which extends from Muir- kirk, (where great quantities of argillaceous carbonate of iron are found, raised, and smelted), all the way to the sea, including the greatest part of the county of Ayr, which great coal-field is separated from that of the Clyde and Forth by a narrow ridge pf the Strathavon and Loudon Hills. It may not he uninteresting to state, that, not far from the borders of the New Cumnock Basin, near Old Cumnock, gra- phite is found in considerable quantity in the coal formation *, and it might probably be found in this basin also. Notwithstanding the great abundance of coal in the New Cum- nock Basin, the demand for it has been inconsiderable, owing to its being thinly inhabited, and opening on the north and south into a coal country. In one instance, however, the case has been different. A coal occurs near the source of the Nith at Auld- know, considered excellently adapted for the working of iron. With this view, therefore, it is carried in considerable quantity over a great part of the counties of Ayr, Dumfries and Kirkcud- bright, often to a distance of fifty or sixty miles, thus forming the • A Geognostical description of the Cumnock Graphite will be found in Professor Jameson's Mineralogical Description of Dumfriesshire, pp. 158-162. Mr Mentcath on the Geohgy of Nitlisdale. 317 chief export from this basin. But, as the road communicating with Dinnfriesshire to the eastward of Consonscon Hill is repair- ed, and having a considerable descent all the way to Kirkcon- nel, it is probable that the Mansfield coal situated in this basin will be consumed in Nithsdale. This coal is very carbonaceous and highly bituminous, with little or no pyrites. Its unsulphu- rous nature renders it a most valuable article to the gas-maker, maltster, lime-coke burner, smelter of ores, and to all who in- dispensably require purity of fuel in their operations. It is at present employed to prepare the gas for lighting the streets of Dumfries, though at a distance of more than thirty miles; and its coke is carried as far as Ayr. 3. Basin of Sanquhar. — The riverNith, after leaving the Basin of New Cumnock, crosses a grcywacke ridge through rather a narrow ravine, and enters the Basin of Sanquhar. In this ridge amygdaloid occurs. The hills which surround this basin are of greywacke. They are loftier, and of more pleasing form than those of New Cumnock. The Killa, the Youchan, the Crawick, and the vMcnock, have their sources among them, and in their course, before falling into the Nith, afford sweet pastoral scenery. The secondary rocks in the Sanquhar Basin are the coaljbr^ mation, and secondare/ trap. The coal Jbrmation occurs only on the bottom of the basin. It stretches along both sides of the Nith for about seven or eight miles, but scarcely exceeds two miles and a-half in width. Its position is very irregular. The strata are frequently broken, thrown down, and, as the collier expresses it, are full of troubles. They are crossed by two dikes or veins of secondary trap or greenstone^ which, in their course, alter the position of the strata. Near to these dikes the coal is char- red, and of inferior quality.* The coal of this basin has a splin- ty character, is generally sulphureous, and leaves a great quan- tity of slaty ash after combustion. Of the twelve beds, -f- ascer- • Professor Jameson remarks, that a little above Crawick Biitlge, there is a bed, about four feet thick, of columnar glance-coai or graphite : it is traversed by a vein of greenstone.— Mtn^o/o^ of Dumfriesshire^ p. 89. t According to the survey made by Mr Maclaren. S18 Mr Menteath on the Geology of Nith&dale. tained by borings in different parts of the basin, the thinnest is only a few inches, and the thickest does not exceed five feet. At the north-west corner of this basin, a kind of coal is found, which is considered of a superior quaUty, and is chiefly em- ployed by blacksmiths. A small deposite of limestone, with coal, occurs near the Menock, and appears separated from the coal- field of Sanquhar by a ridge of greywacke. It is of such an impure quality as to forbid its use in agriculture. The ochry sandstone of the coal-field occurs on both sides of the Nith. That which is on the east side of the river is of a bad quality, hardly turning wet ; but that which is found on the west side, as near the mouth of the Youchan, of a yellow-whitish colour, is an excellent building material. Some traces of iron-ore are observed near Crawick Bridge, but as yet this ore has not been turned to account. The soil of the valley of Sanquhar is clayey, partaking of all the properties of that which usually lies upon the coal formation. It is stiff, tenacious, and impervious to water, requiring much drainage, and much liming, to loosen its texture, and fit it for the growth of good herbage. It is, however, distant from lime, a circumstance which has hitherto retarded its improvement. There is little or no wood in this valley, which makes the cli- mate bleak and the scenery uninteresting. The Sanquhar coal formation, though of no great extent, has long supplied a considerable range of country, as it has afforded a principal part of the fuel of Dumfries and the neighbour- hood *. But, it is probable that in future the extension of market of the Sanquhar coal will not be increased, the Ayrshire coal being now accessible, and the lower part of Nithsdale deriving a • That this coal-field, though of but very limited extent, is fitted to sup- l).y the district in which it is placed for a very long period, a short calcula- tion will be sufficient to show. It has been stated, that the coal-field of Sanquhar is about 8 miles long, and scarcely 2\ in breadth. This will give in all about 20 square miles, or 13,000 square acres. Now, the seams of coal, which are twelve in number, as has been ascertained by accurate borings, amount in all to only 18 feet in thickness. But of these several are only a few inches thick ; and the four workable seems scarcely amount to more than 15 feet or five yards. Taking, then, the workable coal at this thickness, or nearly so, it will give us in each acre 24,200 cubic yards of coal, or in all 314,600,000 cubic yards. But each cubic yard of coal, as I have been informed by an experienced engineer, Mr Mr Menteath on the Geology of Nithsdale. 31 9 considerable supply from England, since the navigation of the Nith has been improved. Lying to the eastward of the valley of Sanquhar, in the grey wacke mountains, are the great lead- mines of Wanlockhead and Leadhills. The former are in Dumfriesshire, and the property of the Duke of Buccleuch ; the latter, belonging to the Earl of Hopetoun, are in Clydesdale. The principal ore at both places is galena or lead-glance, which is found in great quanti- ties. Specimens of many of the more beautiful and rarer of the spars of lead are met with ; * and, of late years, mineralogists- have described new species of lead spars as natives of these mines. Silver is contained in the lead, and about 7 or 9 oun- ces of it can be extracted from the ton. In 1809, the pro- duce of the mines of Leadhills was 25,000 bars,^-of Wan- lockhead, 15,000 bars, each weighing 9 stones avoirdupois, and the price being L. 32 the ton, the gross produce exceeded L. 80,000 in that year. Since that period, I believe the an- nual returns have been far below those of the year 1809- They must, however, since they were opened, have yielded millions of revenue. Gold is found in the sand of the streams in the vicinity of these mines. By washing the sand, the miner in his leisure hours collects a small quantity of this precious metal. It is said Bald, may be considered as about 18 cwt., and, therefore, in each acre there will be about 22,000 tons of coal. But, deducting even Jth for pillars left in working the coal, which is the utmost ever lost, we shall have of coal for use 16,600 tons in each acre. Now, it has been ascertained from accounts of the sales, that not more than 13,000 tons are annually required for the whole district. One square acre would therefore supply this demand for one year and a quarter ; and, conse- quently, the 20 square miles, or 1 3,000 square acres, willbe sufficient for upwards of 16,000 years. But, deducting 1000 acres for that which has been already wrought, and for whinstone-dikes, and such like in this field, we shall have 12,000 acres still to break, which, according to the highest rate of demand that has hitherto taken place, will supply this district for 15,000 years, a pe- riod much more than twice as long as that since man has yet existed. But, if we take into account the coal of the New Cumnock Basin, which, though not hitherto accurately ascertained, seems to be much more extensive than that of the Sanquhar, the treasure of fuel which this district of Niths- dale possesses, appears almost unlimited, according to the present rate of de- mand. • A fine collection of these has been made by the company at Wanlockhead, and may be seen on application to the overseers. 3S0 Mr Menteath on the Geology of NUhsdale. that, in the reign of James V., as much as amounted to the sum of L. 100,000 was obtained in one year. It is very interesting to observe, that this spot, not more than two miles each way, in the county of Dumfries, where a hut would perhaps scarcely have been seen but for the mineral treasures there deposited, has for more than a century support- ed an industrious and comfortable population. The miners at Leadhills have a library of 1200 volumes. At Wanlockhead is another of 700 volumes.* The intelligence of the miner is well exemplified by the skill with which he cultivates his small plot of ground. Elevated as is his residence, by industriously raising the Alopecurus pra- tensis, or the Meadow foxtail, he has early in the spring green food to give his cow before the lowland farmer. The rocks which separate the Sanquhar and Closeburn basins assume more the appearance of grey wacke slate than in most other parts of the range. The stratification is in many places nearly vertical, and runs from NE. to SW. The stratification is very loose, having the seams filled with a red ochrey earth, which is found principally in this quarter. At Burnmouth, a place about the middle of this ridge, which separates the basins of Sanquhar and Closeburn, it has the appearance of indifferent slate ; and at Arkland, in the parish of Tynron, a few miles to the west, slates for roofing have been raised. Thus there seems a slaty structure to extend from Glenochar, a slate quarry in Lanarkshire, across the whole of Dumfriesshire in this direction. 4. Basin of Closeburn. — The river Nith, after a tumultu- ous course of more than five miles through a rocky chan- nel, exhibiting scenery of the most romantic kind, and beau- tifully adorned with a great variety of natural wood, enters the basin of Closeburn, which is completely encircled by grey- wacke hills, tliat exhibit a pleasing outline. Of these the Low- ders are the most striking. They rise to a considerable eleva- tion;> with a smooth grassy slope to the west; and, by means of a road now opened through them into Lanarkshire, afford one of •jThese volumes, in the wild regions of the Leadhills, we believe, are more thoroughly read, and more anxiously sought after, by the poor miners, than are the numerous and splendid volumes in many of the libraries in the low country : hence these people are comparatively well informed. Mr Mentcath ofi the Geology (>f Nithsdale. 321 the most picturesque passes in the south of Scotland. This is denominated the Pass of Dalveen. By much ingenuity and labour, a beautifully winding road has been cut out along the sides of the mountains ; and from the great height to which it gradually conducts, the traveller, with no little tre- pidation, looks down on a small stream or burn, winding like a silver thread, about 300 feet beneath him. Nowhere, perhaps, in Great Britain is a scene more pleas- ing, more placid, more interesting, presented, than in this long, narrow, mountain pass. The sides of its hills, without any clothing of wood, are smooth, covered with a short velvet turf, fresh and green during the greater part of the year, af- fording abundance of food to the flocks which graze their decli- vities. In the bottom of the valley, between these agreeably shelving hills, is the Carron Water, here but a small rivulet, pure and hmpid, and, like the many other burns of Scotland, characterizes and enlivens this romantic dell. Few more delightful scenes are offered to the lover of land- scape, than he will enjoy in lingering in this beautiful pass of Dalveen, in a calm summer''s evening, when the lights and long shadows of a setting sun fall on its mountain sides, enlivened by numerous variously grouped flocks. To the southward of Dalveen, in the same range of hills, the Lowders, is another pass, called the Walpath, communicating with England and the northern parts of Scotland, through which the Romans carried their road, and of which traces still re- main. This road, scarcely at present more than a tract, passes close to the village of Durisdeer, in the church of which the traveller will be interested by some fine sculpture in the tomb of the Queensbery family. It is, however, far inferior in wild picturesque scenery to that of Dalveen ; and, offering many ob- stacles to the modern road-engineer, was deemed by him unfit for opening a communication through the Lowders into Lanark- shire. Dalveen Pass was therefore preferred ; and happy it is for the traveller that utility and sweet pastoral scenery could be united. There is more wood in this basin than in the two we have just described ; the banks of the Carron, the Cample, the Scar, and the Shinnel, tributaries of the Nith before it quits the valley of Closeburn^ being all beautifully fringed with natural wood. 8!^ Mr Menteath on the Geologij of Nithsdale. The bottom of the valley of Closeburn is covered with second- ary rocks. These are sandstone and limestone. The most abundant rock is sandstone. Of it there are three varieties, the red, white, and grey. The red appears to be the new red sand- stone, and is by far the most abundant. It varies much in its texture, being sometimes bard, but oftener soft and friable. It lies over all the other strata of the basin, but is almost entirely confined to the east side of the Nith, as scarce- ly any of it is seen on the west. One of the best examples of the appearance of its varied structure, and the irregularity of its dip, may be seen at the Gateley Bridge Quarry on the Cample, where this red sandstone exhibits its beds lying in all manner of directions, horizontal, upright, and variously inclined. In this quarry roofing-flags are raised, which are carried to a great dis- tance, and even exported to England. Being pervious to water, they are unfit for roofing until they have been brushed over with coal-tar, when they become an excellent substitute for slate. Not only flags for roofs, but also lintels of doors, windows, &c. are here prepared, and supply the whole neighbourhood. At Crigup Linn the new red sandstone covers the other strata of the basin, ' which are to be seen rising from underneath it. The red sandstone, easily worn away by the running water, is at the Crigup Linn, by the continual chaffing of the Crigup, scooped into a very deep ravine, its sides presenting rocks of every picturesque form, and overhung by rich foliage. It was to this romantic dell that the unjustly persecuted Covenanters fled for shelter in their des- perate fortunes. And the pen of the inimitable Sir Waiter Scott has lately given this linn a classic interest, by having, in his tale of Mortality, made the Crigup Linn the retreat of the da- ring Balfour of Burleigh. The red sandstone of this valley is, in general, a good build- ing stone. The most esteemed is that raised at the Gateley Bridge quarry, where it is hard, tough, and very durable, re- sisting, in those houses built of it, the action of the weather, and indicating no appearance of waste or decay. Other but less frequent varieties of this sandstone, are soft, and decay on exposure to the weather. Of this a striking proof may be ad- duced in the case of Drumlanrig Castle, which was built at the .same time with Heriot's I^ospital, by the same architect Sir Mr Menteath on the Geology of Nithsdale. 323 Inigo Jones, but is in a decayed state compared with that building. Not far from the Gateley Bridge, red sandstone quarry, a mile up the Cample, basalt occurs in pentagonal columns. It appears to form a narrow ridge or dike, traceable from Mor- ton-Mains Hill on the north-east of this spot, and it seems to take the direction of the Linburn Hill on the southeast*. The white and grey sandstones, under the red sandstone, are not found in any considerable quantity. The white, which oc- curs very seldom, is hard and compact in its texture, and well fit- ted to resist the effects of the weather. Of the grey more is found, and it partakes much of the characters and qualities of the white. The limestone is found only at the south end of the basin of Closeburn on both sides of the Nith, as at Closeburn and Bar- jarg, but at the latter in much less quantity {To be conduced in our next Number.) A Proposition for carrying on a Course of Experiments, with a view to constructing, as a National Instrument, a large Refracting Telescope, with a fluid concave Lens, instead of the usual Lens of Flint Glass. Addressed to his Royal High. ness the Lord High Admiral, and the Right Honourable and Honourable Members of the Board of Longitude. By Petee Barlow, F.R.S. Mem. Imp. Ac. Petrop., S^c. S^e, [This Memoir has been presented to the Board of Longitude ; and we are gratified to add that the members have ordered the experiments to be pursued. Mr Barlow is accordingly, as another step, attempting aa eight inch aperture, of ten feet in length, but with a focal power of about sixteen feet.] In a memoir I had the honour to present to the Royal Society in the early part of the year 1827, which was published in the * In this valley there are no fixed rocks of granite, and indeed none nearer than perhaps thirty miles. It is very curious, however, that there are round- ed blocks of it found in many places on the siuface, some of them exceedinf^ a ton in weight. The same occurs in other districts, where the distance from the granite formation is still greater, aa in Cheshire. The existence of these masses in such situations, has never yet perhaps been satisfactorily accounted for. Two explanations have been offered ; according to the one, they are of lacustrine origin-.while the other connects them with the Mosaic deluge. 324 Professor Barlow on the Cmistruction of last Part of the Philosophical Transactions, I have given an ac- count of a series of experiments I made, assisted by the practi- cal skill of Messrs W. and T. Gilbert, instrument makers to the Honourable East India Company, on the construction of refract- ing telescopes; in which memoir I have also described a new in- strument for simplifying the determination of the dispersive power of glass, and I am in hopes that I have so far succeeded in removing from the several formulae those terms which involve quantities too refined to be followed out in practice, that no dif- ficulty of calculation can be said to remain in the construction of this instrument : nor is there any practical one which the inge- nuity of our opticians would not overcome, provided glass could be obtained of sufficient size and purity. But here, unfortu- nately, an impediment interposes; and therefore, with a view to avoid an obstacle we have not at present been able to overcome, I turned my attention to the adoption of some fluid to supply the place of the flint lens. The construction of flint object glasses, retaining, however, the flint lens, had been formerly at- tempted by Dr Blair with considerable success, but which, for some reason, was not afterwards pursued *. I was not at first fully aware of the fluid employed by this ingenious philosopher, and moreover it was at least possible that some other might be found equally well, if not better, suited to the purpose. I there- fore determined to begin de novo, and ascertain with my new in- strument, which was easily made applicable to the purpose, the re- fractive index and the dispersive power of every fluid which ap- peared to possess properties likely to answer my intended pur- pose. I had proceeded some way in this inquiry, with several oils, acids. Sec, when I made trial of the sulphuret of carbon, and here I found at once a fluid which appeared to possess every requisite I could desire. Its index being nearly the same as that of the best flint glass, with a dispersive power more than double, perfectly colourless, beautifully transparent, and, although very expansible, possessing the same, or very nearly indeed •(-, • It appears from an article published since this was written, that Mr Blair, the son of Dr Blair, is at piesent engaged in pursuing his father's views. •|- I have never found any appreciable numerical difference in the refrac- tive index of this fluid between the temperatures of 31* and 84\the fluid being hermetically sealed. a Large Refracting Telescope. 325 the same optical properties under all temperatures to which it is likely to be exposed in astronomical observations, except per- haps direct observations on the solar disc, which will probably be found inadmissible. I felt so confident, from the result ob- tained with the dispersive instrument, of the applicability of this splendid fluid to the purposes I had in view, that after some trials as to the best method of inclosing it, and of applying the correcting lens, I attempted at once a telescope of six inches aperture and of seven feet length; but some unforeseen difficulty having interposed, after several unsuccessful trials, I laid it by, and undertook one of three inches aperture. I was here more fortunate, having, with this instrument in its first rude experi- mental form, without any adaptation or selection of glasses, se- parated a great number of double stars of that class which Sir William Herschell has pointed out as tests of a good three and a half inch refractor ; I can see with it the small star in Polaris with a power of 46, and with the higher powers several stars which are considered to require a good telescope, as, for example, 70, p Ophiuchi, 39 Bootis, the quadruple star i Lyrae, ^ Aquarii, « HercuUs, ^c Encouraged by my success on this instrument, I again attempted the six inch object glass, with a different man- ner of adjusting and securing the lenses; and the result of my endeavours I lay with confidence before the Board of Longi- tude, feeling convinced that every proper allowance will be made for the imperfections of a first attempt, at a novel construction, on a considerable scale, and which professes only to prove the ap- plicability of the principle, and not the completion of the expe- riment. With this instrument the small star in Polaris is so distinct and brilliant with a power of 1 43, that its transit might be taken with the utmost certainty. But as this and the former instruments are both before the Board of Longitude, and have been examined by some of its members, I would much rather they would report their opinion of the performance of them, and more particularly of the promise they hold out; than to give my own. I shall therefore proceed at once to describe the prin- ciple of the proposed construction, which possesses some novel- ty, and offers some advantage not to be obtained with any glass ever made, or likely to be made ; although I am quite ready to admit, that if glass could be obtained of sufficient purity and size, the permanent nature of that material would, probably, JANUARY — MAECH 1828. Y 326 Mr Barlow on the Comtniction of give it a preference before any other in the construction of re- fracting telescopes. My object is (as I wish distinctly to be un- derstood) not to supplant the use of flint glass in the construc- tion of this instrument, but to supply its place by a valuable substitute in cases where the former cannot be obtained suffi- ciently large, or where it can only be obtained at an ex pence which must always limit the possession of a good astronomical telescope to persons of fortune and to public institutions. Principle of Construction. In the usual construction of achromatic telescopes, the two or three lenses composing the object-glass are brought into im- mediate contact, and in the fluid telescope proposed by Dr Blair, the construction was the same, the fluid having been in- closed in the object glass itself. Nor could any change in this arrangement in either case be introduced with advantage ; be- cause the dispersive ratio between the glasses in the former in- stance, and between the glass and fluid in the latter, is too close to admit of bringing the concave correcting medium far enough back to be of any sensible advantage. The case, however, is very different with the sulphuret of carbon. The dispersive ra- tio here varies (according to the glass employed) between the limits -298 and -334; which circumstance has enabled me to place the fluid correcting lens at a distance from the plate lens equal to half its focal length ; and I might carry it still farther back, and yet possess sufficient dispersive power to render the object glass achromatic. Moreover, by this means the fluid lens, which is the most difficult part of the construction, is re- duced to one-half, or to less than one-half of the size of the plate lens; consequently, to construct a telescope of ten or twelve inches aperture involves no greater difficulty in the manipulation, than in making a telescope of the usual description of five or six inches aperture, except in the simple plate lens itself; and, what will be thought perhaps of greater importance, a telescope of this kind of ten or twelve feet length, will be equivalent in its focal power to one of sixteen or twenty feet. We may, therefore, by this means, shorten the tube several feet, and yet possess a focal power more considerable than could be conveniently given to it on the usual principle of construction. This will be better understood from the annexed diagram. a Large Re/racHng Telescope, wn In this figure A B C D represent the tube of the 6 inch telescope, C D the plate object glass, V the first focus of rays, d e the fluid concave lens, distant from the former 24 inches. The focal length M F being 48 inches, and, consequently, as 48 : 6 : : 24 : 3 inches, the diameter of the fluid lens. The resulting compound focus is ^'H,-^ inches ; it is obvious, therefore, that the rays df^ efy arrive at the focus under the same convergency, and with the same light as if they proceeded from a lens of 6 inches diameter, placed at a distance beyond the object glass C D, (as C ly), deter- mined by producing these rays till they meet the sides of the tube produced in C ly, viz. at Q^.5 inches beyond the fluid lens. Hence, it is obvious, the rays will converge as they would do from an object glass, C D', of the usual kind, with a focus of 10 feet 5 inches. We have thus, therefore, shortened the tube 38*5 inches, or have at least the advantage of a focus 38*5 inches longer than our tube ; and the same principle may be carried much farther, so as to reduce the usual length of refract- ing telescopes nearly one-half, without increasing the aberration in the first glass beyond the least that can possibly belong to a telescope of the usual kind of the whole length. It should, moreover, be observed, that the adjustment for focus may be made either in the usual way, or by a slight movement of the fluid lens, as in the Gregorian reflectors, by means of the small speculum. In the latter case, the eye-piece is fixed, which may pro- bably be convenient for astronomical purposes, in consequence of the great delicacy of the adjustment. Thus far every thing is in favour of the pro- posed construction ; but some doubtful points may probably present themselves, viz. Is not the opening of the lenses to so great a distance calcu- lated to produce an irrationality in the two spectra ; fthe relative position of the transparent and opaque, of the fluid or solid parts of the earth, modifies the absorption of the solar rays falling under the same angles, and at the same time the produc- tion of heat. These circumstances, the winter cover of ice and snow, which is peculiar to the continents, and to a very small part only of the seas ; the slowness with which large masses of wa- ter are heated and cooled ; the radiation from smooth or rough surfaces, towards a cloudless sky ; the regular currents of the ocean and of the atmosphere, by which water and air from dif- ferent latitudes and different depths and heights are mixed ; all concur to produce the peculiarities of climate. It may therefore be said, that every place has a double climate, one depending on general and remote causes, on the general position and shape of the continents, and another determined by the peculiar relations of its locality. Since the problem of the geographical distribution of heat has been considered upon general principles, meteorological ob- servations have been conducted in a more efficient manner. A smaller number of them now lead to certain results ; and ibe discoveries made within the last twenty years, in the most remote parts of the globe, have gradually enlarged the point of view. Physical and geological inquiries have now become equally important objects of all extensive voyages and tra- vels. To begin with the extreme north, I shall here, in the first place, mention a man, whom the dangerous and trouble- some occupations of whale-fishing, which were the object of his voyage, have not prevented from carrying on the most refined meteorological and zoological observations. Captain Scoresby has, for the first time, determined the mean atmospheric tem- perature of the Polar Seas, which he has taken between the volcanic Island of Jan Mayen, and that part of East Greenland discovered by himself. In endeavouring to discover a north- west passage, the English government has succeeded in affording to geography, to climatology, and to the theory of magnetism, services which were originally promised to the commercial inte- rest of nations. Parry, Sabine, and Franklin have, for several years, been employed in investigating the temperature of the at- mosphere, and of the sea, in the polar regions ; they have pene- rated to Port Bowen and Melville's Island, consequently nearly to Temperature of the Globe. 381 75° N. Lat. ; and they have, in this arduous task, displayed a perseverance, of whicli we find hardly a parallel instance in the history of human exertions and struggles against the elements. Captain Wcddell has recently destroyed the ancient prejudice, sanctioned by Cook''s illustrious name, that the South Pole is, on account of a more extended mass of ice, less accessible than the NcM'th Pole. The discovery of a new archipelago to the SSE. of Terra del Fuego, has led to an expedition in which Captain Weddell found a sea completely free from ice, under the 74° Lat. (far beyond two solitary islands discovered by the Russian Captain Billinghausen.) In turning to the temperate zone, we find a great many points where the average temperature, which hitherto was considered to be invariable, has been measured. Various astronomers in New Holland, and on the foot of the Indian Himalaya, Catholic and Protestant missionaries at Macao, in Van Diemen's Land, and in the Sandwich Islands, have furnished us with new facts towards comparing the northern and southern, the eastern and western hemispheres, in the torrid and temperate zones, consequently those parts of the glofbe which are most abundant in water, as well as those which are most abundant in land. In the same manner, the proportion of heat under the line, and in both the tropics, has been determined. These points, as ascertained in numbers, are particularly important as fixed points, because they may, like the zone of the warmest sea- water, (between 84° and 87° Fah. ; 23° and 24° 5' B,), in future ages serve to determine the much disputed variability of the temperature of our planet. It is necessary to mention here, that we have been long in want of climatological determinations in the most southern parts of the temperate zones, between the 28° and 30° lat. This part of the world forms as it were an intermediate link between the climate of Palms, and that region in which, according to the tradition of the east, mankind, along the Mediterranean, in Asia Minor, and Persia, first awoke to intellectual develope- raent, to mild manners, and to taste in the cultivation of the JHTts. The observations of Niebuhr, Nouet, and Coutel in Egypt, those of my unfortunate friend Ritchie in the Oasis of Murzuk, could, on account of local circumstances, only lead to 332 M. Humboldt on the Difference of the erroneous results. The large and classical work on the Canary Islands, for which we are indebted to Mr Leopold Von Buch, has now also filled up this blank, in the same way as his travels in Lapland and to the most northern promontory of Europe, first furnished us with a clear illustration of the causes which, in the Scandinavian peninsula, beyond the polar circle, diminish the severity of the winter cold, and preserve to the springs the temperature which they had received from deeply seated strata, and which occasion, under the influence of a continental climate and that of the coast, an unequal elevation of the snow line, and of the upper limit at which different species of trees grow. If we follow the current of the sea, which traverses the great valley of the Atlantic Ocean, from east to west, we find almost unexpectedly rich sources of instruction in the New World, from Russian America, and the settlements of the Canadian hunters, to the River La Plata, and the most southern parts of Chili. It is no longer foreign naturalists who commu- nicate to us the notices they have been able to collect during a short residence in plains, rich in wood and grass, and on the ice-covered ridges of the Cordillera ; we have no longer need to judge of the mean temperature of the whole year by that of single months or weeks ; here we obtain every where solid and complete information from the inhabitants themselves. The executive power of the United States of North America has ordered meteorological observations for five years to be made three times a day, at seventeen different points, occupied by mi- litary garrisons, between the 28° and 47° lat.^ between the Mis- souri and the AUeghanys, the lake Michigan, and the coast of Pen- sacola ; and from these observations, the average temperature of days, months, and of the whole year, is drawn. These obser- vations calculated by Mr Lovell, surgeon-general of the army, have been published at the expense of the American govern- ment, and have been distributed to all scientific institutions in Europe. If this excellent example was followed in the eastern part of our continent, and if, by the command and at the ex- pence of a powerful monarch, similai* comparative theometricai observations were carried on in well selected points in the ex- tensive district situated between the Vistula and the Lena, the Temperature of the Globe. 8jJ3 whole science of climate would in a few years appear in a new and much improved form. The zeal by which the United States of North America are animated, has arisen equally strong in the lately emancipated Spanish America. Journals, printed 9,000 feet above the level of the sea,^ give daily the height of the thermometer, barometer, and hygrometer, taken with very exact instruments, made at Paris and London, in the enormous extent from the 28° N. to tlve 40° S. lat. Thus the political revolution of these countries has not only improved their own condition and the industry of Europe, but it will also, when the population increases, and scientific knowledge spreads, over so many mountains and ele- vated plains, lead to a better knowledge of the higher regions of the atmosphere. In those countries, whole provinces rise like islands in an ocean of air, to the height of Etna, or the Peak of Teneriffe : in the old continent, where the travelling natu- ralist erects his tent near the line of permanent snow, populous towns are found in America. In modern times Africa, which the ancients represented upon coins and monuments as the kingdom of palms, has been found rather deficient in this tribe of trees ; and, in the same manner, later travellers have modified in a singular manner the be- lief in the constant uniform tropical heat of the African de- serts. In the Oasis of Murzuk in Fezzan, Ritchie and Lyon found, during several summer months, the thermometer in the shade, at from 5 to 6 feet above the ground, to indicate 86° to 91° Fahr. ( 24° to 26° R.), at 5 o'clock in the morning, and from 1 18° to 129° Fahr. (38° to 43° R.) at noon, a temperature which probably arose from the radiation produced by the sand floating in the air ; and, in the same place, Dr Oudney died of cold in the end of December. This spot is situated in the centre of Af- rica, on the frontiers of Bornou, under the 13th degree of lat, and, according to barometrical measurement is not 1200 feet above the level of the sea. It is said that the water in the leather bottles, which Oudney's caravan carried along with them, was frozen this same night. But Major Denham, Clapperton's companion, whom I desired, after his return from the lake Tchad, to give me some oral explanation, told me, that, in the morning, some hours 334 M. Humboldt on the difference of the after Dr Oudney'*s death, the temperature of the air was not be- low 49° Fahr. (7i° R.). In South America, at a less distance from the equator, near Bogota and Quito, I saw the water free from ice, at the height of 8500 and 9000 feet, notwithstanding the strong effect of the radiation of high plains in producing cold. In the manuscripts of young Beaufort, who died lately in Upper Senegal, a victim to scientific zeal, I find that under the 16th degree of latitude, the thermometer marked in the shade on the same day 113° Fahr. (36° R.) at noon, and 59° Fahr. (12° R.) early in the morning. The temperature of the air in the plains of America never sinks so low in the same northern latitude. In laying before the Academy last year, a detailed account of the excellent labours of Ehrenberg and Hemperich, I have already mentioned the cold to which these learned travellers were exposed, when in the Desert of Dongola under the 19th degree of latitude. North winds penetrated into this southern tropical country, and, in December, the thermo- meter sunk to 38° Fahr. (2° 5^ R.) above the freezing point, con- sequently 12° of R. lower than it had ever been observed, under the same latitude, in the West Indies, according to the accounts carefully collected by myself. It is astonishing to find Africa in its deserts colder than America, with all its rich vegetation, and this not on the margin of the tropics, but at the very centre of them. The true causes of this singular cooling process have not yet been sufficiently explained. Perhaps it is the ra- diation of heat from the soil through the dry air towards a cloud- less sky, or a sudden expansion produced by the pouring of humid strata into this dry air, and the descent of the upper parts of the atmosphere. It is generally known that more than two-thirds of our planet are covered by a body of water, which, by its contact with the at- mosphere, exercises the most powerful influence upon the climate of the continents. The rays from the sun produce heat according to different laws, as they fall either upon the water or upon the solid surface of the earth. The mobility of the particles of which we imagine fluid bodies to be composed, produces cur- rents and an unequal distribution of temperature ; cooled and con- densed by radiation, the particles of water sink to the bottom. By ascending in balloons, climbing upon insulated peaks of Temperature of the Globe. 335 mountains, by thermoscopic apparatus sunk into the sea, it has been possible to determine the velocity of the cooling process which takes place at different seasons, from below upwards, in the atmosphere, and from above downwards, in the occean, and in fresh water lakes. The animals, therefore, which dwell in both these elements, find on each point of the globe, in the aenfomi and liquid elements, the most heterogeneous climates, placed in strata one above another. In the depth of the sea, under the Line, and in alpine lakes of the temperate zone, there is always a fixed degree of cold, viz. that degree at which the water attains the greatest density. The experiments of Ellis, Forster and Saus- sure, have been repeated under all zones and in all depths ; but what we know of the lowest temperature of the air, and of sea- water, as well as of the greatest effect of the radiation of heat be- tween the tropics, serves 'as an infallible proof that the cold which there exists near the bottom of the sea, is produced by a current which, in the depths of the ocean, passes from the poles towards the equator, and cools the inferior strata of water in the southern ocean, like the current of air in the upper atmosphere, which moves from the equator to the poles, to temper the cold of the winter in the northern regions. The immortal Benjamin Franklin first taught us that sand- banks are sooner recognised by the thermometer than by the sounding line. They are islands of the submarine land, which the elastic subterranean potvers had not been able to elevate above the surface of the water. On the declivity of the shoals, the inferior and colder strata ascending by impulse, are mixed with the upper and warmer ones ; and thus the sudden cold of the sea-water shews to the navigator that danger is near. The shallows, by their temperature, act on the air above thefin, in which they produce fogs and groups of clouds, which are per- ceived at a great distance. Before more extensive investigations had been made on the distribution of heat over the globe, it was believed that the cli- mate of two places could be determined by the extremes of the temperature in summer and winter. This view of things has still been preserved in popular opinion, whilst naturalists have long ago renounced it as erroneous ; for, although undoubtedly the extremes of single days and nights are in a certmn proper- 336 M. Humboldt m the Difference of the tion to the mean temperature of the year, yet the distribution of heat in the different seasons is strikingly different, although the mean annual temperature be one and the same, — a circum- stance which has a very great influence on the growth of plants and on the health of man. I have endeavoured to determine the law of this distribution, according to different situations and heights. But comparative results in numbers ought to con- tain the mean temperature of every month, derived from the two extremes of every day, supposing an arithmetical series to be formed. This method was first adopted by Reaumur in 1735 : he compared the produce of two harvests, not (like Her- schel) with the numbers and size of the spots in the sun, but with the quantity of heat which the corn received in the time of vegetation. Many labours have of late been directed towards as- certaining the hour, the mean temperature of which expresses also that of the whole year. I here only mention the observa- tions carried on in Scotland at Leith Fort. The night watch of a military post has been employed for establishing observa- tions of the thermometer during two years, from hour to hour ; and from the mass of these observations, which ought to be re- peated in other latitudes, it has been calculated, that, in the la- titude of Edinburgh, a single daily observation at 9 o'clock 13 minutes in the morning, and in the evening at 8 o'clock 29 mi- nutes, would be sufficient to fix the average heat of the year *. Of the months, it is April and October which give this important result (a fact, first discovered by Leopold and Von Buch, which is connected with remarkable modifications of the upper currents of the atmosphere), except when, as in the island of Grand Ca- nary, local causes carry the maximum of heat to a later period, and place it in October. If I frequently allude to the great increase of meteorological observations within the last twenty years, I by no means wish to express an opinion that the perfection of climatology is parti- cularly founded on such an increase. Here, as in all collec- tions of knowledge derived from experiments, which are too soon denominated sciences, every thing depends on " an accu- • A result, which does not differ from the true by one-half degree of Reaumur's thermometer, is also obtained by the mean of two hours of the same denomination. — Results of the Thermometrical Observations made at Leith Fort every hour of the day and night during the years 1824 and 1825, p. 19. Temperature of the Globe. 337 rate conception of nature," and a just view of the conse- quences to be drawn from well-arranged facts. If we attempt to conceive the problem of the distribution of temperature in its most general sense, we may imagine the planetary heat either (as in the present oxydised, hardened surface of the earth) to be a consequence of the position in relation to a central body, which excites heat ; or (as in the first state of the condensation of matter dissolved in the form of vapour) the consequence of internal processes of oxidation, precipitation, change of capacity, or elec- tro-magnetic currents. Many geognostical phenomena, which I have mentioned in another paper, seem to indicate such a de- velopement of internal heat, produced by our planet itself. More- over, the doubts raised against the peculiar heat in mines in both parts of the world, have been entirely removed by recent experiments of an ingenious astronomer M. Arago, on water rising up through deep borings in what are called Artesian Wells. The greater the depth from which the water ascends, the warmer it has been found. In this case, there can be no suspicion of strata of air sinking down and being condensed, and consequent- ly disengaging heat ; nor can the neighbourhood of men, or of the lanterns of miners, exercise an influence in this case. The waters carry along with them the heal which they have acquired by a long continued contact with rocky masses at different depths. These important observations shew how, independently of the obliquity of the ecliptic in the earhest, and, as it were, youthful state of our planet; the tropical temperature and tropical vege- tation could arise under every zone, and continue, till, by the radiation of heat from the hardened surface of the earth, and by the gradual filling up of the veins with heterogeneous minerals a state was formed, in which (as Fourier has shewn in a pro- found mathematical work) the heat of the surface, and of the atmosphere, depends merely upon the position of the planet to- wards a central body, the sun. We gladly resign to other na- tural philosophers the task to decide, how deep below the oxi- dised and hardened surface of the earth the melted fluid masses lie, which are poured out through the apertures of volcanoes, which periodically agitate the continents and the bottom of the ocean, and force hot mineral springs upwards through clefts in granite and porphyry. The depth of our mines is too inconsi- 338 M. Humboldt on the Difference of the derable to enable Us, from the unequal increase of temperature which has been hitherto observed in them, to give the satisfac- tory numerical solution of a problem which occupies the cu^ riosity of men who live, as it were, upon a vault of rocks. Suf- fice it here to point out how the recent views of geologists have revived the old mythus of Pyroplegeton and of Hephastos. When a planet is everywhere surrounded by aerial strata, and when the oxidised surface of the, earth, with its clefts almost everywhere closed or filled up, by a long radiation of heat, has arrived at a state of equilibrium between receiving and losing, in such a manner that its external temperature and the difference of climates arise solely from its position towards the sun, towards a larger central body which is perpetually ge- nerating light, then the problem of the temperature of any place in its most general form, may be considered as dependent solely upon the manner in which the influence of the meridian height of the sun manifests itself. This height determines, at the same time, the magnitude of the semidiurnal circles, the density of the aerial strata, through which the rays of the sun pass, before they arrive at the horizon ; it also determines the quantity of the absorbed or calorific rays (a quantity which rapidly increases with the size of the angle of incidence) ; and, lastly, the number of the rays of the sun, which^ mathematically considered, a given horizon receives. The production of heat, as far as a greater or less is concerned, can accordingly be considered as proceeding from the illuminated surface of the earth. The absorption which the rays of the sun undergo in their passage through the atmosphere, or (to express it in another manner) the production of heat by the diminution of light is extremely small ; but never- theless is perceptible on the ocean, where, at a great distance from the coast, and even whfen the water was colder than the atmosphere, I observed the temperature of the latter increasing at noon with the height of the sun *. Recent researches + have shewn, that, in both continents, • Mr Arago has first called my attention to this remarkable effect of the absorption of light in the atmosphere—Con. des Terns pour 1828, p. 225. f Essai Politique sur I'lsle de Cuba, 1826, t. ii. p. 79-92. where I think I have obviated the doubts raised by Mr Atkinson.— Mem. of the Astron. Spc vol. ii. p. 137, 137- Temperature of the Globe. 3S0 under the equator, where the mean temperature rises to 82" Fahr. (22°.2 R.) it is not much warmer than it is in 10^ north and south latitude. According to the Commentary of Geminus on the Astronomical Poem of Aratus *, some Greek philosophers believed the temperature of the tropics even to sur- pass that of the equator. M. Arago haS;, in a very ingenious manner, demonstrated, by numerous optical experiments, that, from the vertical incidence to a zenith distance of 20°, the quan- tity of the reflected light (and the lesser heating of the illumi- nated body depends on this quantity), remains almost the same. In comparing the mean annual temperatures with one another, I find, that, in the western part of the old continent, the temperatures diminish from the south towards the north in the following proportion -f* : From 20° to 30° north Latitude. 3°.2 Reaum. 30 40 3.6 « 40 50 5 .7 50 60 4.4 In both the continents, the region where the diminution of heat is most rapid, is to be found between 40° and 45° latitude. In this result, the observation agrees in a remarkable manner with the theory ; for the variation of the square of the cosines which expresses the law of the mean temperature, is largest at 45° lati- tude. This circumstance, as I have shown in another place, has exercised a very beneficial influence on the state of civilisation of those nations who live in the mild countries, under this, the medium parallel of latitude. There the district where the vine grows, borders upon that of the olive and orange tree. No- where else upon earth (in proceeding from the north to the south) does the heat increase more rapidly with the geographi- cal latitude ; nowhere else do the various vegetable productions, used in gardening and in agriculture, succeed each other more • Esig. in Aratum eays. 13. Strabo, Geogr. lib. ii. p. 97* + In the eastern parts of the new continent, the diminutions of the mean temperature are as follows : Trom 20" to 30° Latitude, 5° Reaum. 30 40 5.7 40 50 72 50 60 5.8 340 M. Humboldt (ni the Difference of the rapidly. This variety animates industry and the commercial intercourse of nations. We may here state that partial, daily, and monthly changes of temperature are, on account of the motion of the atmosphere, produced by the transportation of colder or \^armer strata, by greater or less electric tension, by the formation of clouds or the diffusion of vapours ; in short, by an almost infinite number of va- riable causes, acting at a greater or smaller distance. The study of meteorology has, unfortunately, begun in a zone where the causes are most comphcated, and the number and intensity of the disturbing powers greatest. If ever civilization, as may now be expected, shall establish one of its principal seats in the tropics, it is to be presumed that these phenomena, which are so simple there, will be more easily ascertained than in our climates, where the play of many conflicting causes has so long concealed them from our view. From that which is simple it is easy to proceed to what is complicated, and we may imagine a scientific meteorolo- gy as returning from the tropics to the north. In the climate of palms, a feeble east wind always brings strata of air along with it, having generally the same temperature. The barometer shows, like the progress of the needle, the hour of the day. Earthquakes, tempests, and thunder-storms do not disturb the small but periodical tides of the atmosphere. The changed decli- nation of the sun, together with the upper currents of the air, from the equator towards the pole, modified by this declina- tion, determine the beginning of the rainy season and the elec- tric explosions, which both begin at regular periods. The tra- veller may know his way almost as well by the direction of the clouds as by the compass ; and, in the dry season, the appear- ance of a cloud on the deep blue sky would, in many districts of the tropics, astonish the natives as much as the fall of an aero- lite or of the red polar snow would do us ; or as the crash of thunder in Peru ; or, in the tropical plains, a hail storm. This simplicity and regularity in the meteorological phenomena allow us to expect an easier and more favourable insight into the re- lation of their causes. As long as the observations on the magnetic inclination, de- clination and intensity of forces, remained dispersed in the re- ports of travellers, and had not been united by magnetical lines. Temperature of the Globe. 341 the doctrine of the distribution of magnetism on the earth could not be expected to make any important progress. Supported by analogy, it has been attempted to simplify by a careful employ, ment of well ascertained facts, the complicated doctrine of the distribution of heat. Places having an equal mean temperature of the year, of summer, or of winter, have been connected with one another by curves. This was the origin of the system of isothermal lines*, of which I published a full account in the year 1817. They descend towards the equator, because in Eastern Asia and the eastern parts of North America we find, on an equal level above the sea, and in a more southern lati- tude, the same temperature which we meet with in the centre of Europe, in a more northern latitude. The remarkable cir- cumstance, that the highest civilization of the species to which we belong has developed itself, almost under the same latitudes in the temperate zone upon two opposite coasts, the eastern coast of the new and the western of the old continent, must early call our attention to the difference of heat under the same latitudes. The question arose by how many thermometrical de- grees the old world was warmer than the new, and it is not long since it was known, that the isothermal lines from the la- titude of Florida to that of Labrador, do not run parallel, and that the eastern and western coasts of North America are al- most as different from one another as those of Western Eu- rope and of Eastern Asia. The shape and grouping of the continents, ^nd their relation to the neighbouring, seas, are the principal causes which determine the inflection of the isothermal lines, or the direction of equally warm zones, into which we may conceive the whole globe to be divided. The predominance of west winds in the temperate and cold re- gions determines the difference of climates on the eastern and western coasts of one and the same conUnent. The western winds, which are considered as reactions of the tropical trade- winds reach an eastern coast, after having traversed in winter a continent covered with snow and ice ; to the western coasts, on the contrary (in Europe as well as in New California and * De la Distribution de la Chaleur sur le Globe.— Mem. de U Soci^t^ d'Arcueil, t. iiL » JANUARY — MARCH 1828. » 842 M. Humboldt on tlte Difference oftlie Nootka), western winds carry strata of air, which even in the severest winter have been heated by contact with the vast surface of the ocean. Led by these ideas, I have considered it of importance to obtain a knowledge of the lowest temperature to which the Atlantic sinks, out of the Gulf Stream, between 40° and 50° north latitude (consequently in the latitudes of Spain, France and Germany), I have found that, in the month of January, in 40° latitude, the water of the sea does not sink below 56° Fahr. (10<^.7 R.) and in 45° latitude not below 54° Fahr. (9°.8 R.) The much esteemed geographer of India, Major Rennel, who for thirty years has been employed in study- ing the direction of the currents of the Atlantic, and who, during my last visit to England, communicated to me a part of his ma- nuscript materials, has, in 50° latitude, consequently in the zone of the north of Germany, observed in winter a temperature of the sea-water, to which the atmosphere does not reach in the month of January, even in the mild climate of Marseilles. If the relative extent of Asia and North America, of the Pacific and the Northern Atlantic, was different from what it is, the whole system of winds in the northern hemisphere, would, by the unequal heating of the solid, as well as of the fluid, parts of the surface of the earth, be changed in their direction as well as in their intensity. Europe is indebted for its milder climate to its position on the globe (the position in which it stands in regard to the neighbour- ing seas) and to its peculiar form. Europe is the western part of the old continent ; and consequently the great Atlantic Ocean, which already in itself has the power of diminishing the cold, and which is besides partly warmed by the Gulf Stream, lies to the west of it. That part of the world which of all others enjoys the greatest share of a tropical climate, the sandy Africa, is so situate that Europe is heated by the strata of air, which, as- cending from Africa, move from the Equator towards the North Pole. Had the Mediterranean not existed, the influence of Af- rica on the temperature and the geographical distribution of plants and animals in Europe, would have been still more consi- derable. The third principal cause of the milder climate of Eu- rope is, that this part of the world does not approach the North Temperature of the Globe. 343 Pole nearly as much as America and Asia do ; and that, on the contrary, it lies opposite the greatest extent of sea- water, free from ice, which is known in the whole polar zone. The coldest points of the earth, which have lately l)een improperly called Poles of Cold, do not coincide with the magnetic poles, as Dr Brewster has endeavoured to prove in the English version of my paper on the Isothermal Lines. According to Captain Sabine's researches, the minimum of the annual mean temperature on the surface of the earth, is to the NW. of Melville's Island, in the meridian of Behring's Straits, probably in 8^ to 83° north Lat. The sum- mer boundary of the ice, which, between Spitzl)ergen and East Greenland, recedes to 80° and 81° north Lat., is in about 75° N. Lat., every where between Nova Zembla, the Bone Islands of New Sil)eria and Icey Cape, the most western cape of America. Even the winter boundary of ice, the line on which the ice ap- proaches the nearest to our continent, scarcely surrounds Bear Island. From the North Cape, which is heated by a south- western current of the sea, the navigation to the most southern promontory of Spitzbergen is never interrupted, not even in the most severe winters. The polar ice diminishes in quantity wherever it finds an opening to flow out, as in Baffin's Bay, and between Iceland and Spitzbergen. The situation of the Atlan- tic Ocean exerts a most beneficial influence on the existence of that sea-water, free from ice, in the meridian of East Green- land and Spitzbergen, which has so important an influence upon the climate of the north of Europe. On the other hand, the icebergs, which are driven from Baf- fin's Bay and Barrow's Straits to the south, accumulate in that large mediterranean sea, which geographers designate by the name of Hudson's Bay. This accumulation of ice increases the cold of the neighlK)uring continent so much, that, as reported by Captain Franklin in his latest MS., in York Factory, and at the mouth of Hayes River, which lie in the same latitudes as the north of Prussia and Courland, in digging wells, ice is found everywhere at the depth of four feet. The most northern and mc^t southern boundaries of the fixed polar ice, that is, the summer and winter boundaries, on the situation of which the temperature of the northern continents depends, seem to have changed but little, as far as historical records go ; which fact z2 344 M. Humboldt 07i the Difference of the Jias been recently confirmed by careful inquiries. The in- jurious influence which small isolated masses of ice, driven sometimes by currents into the neighbourhood of the Azores, exercise, as it is said, upon the continent of Europe, is one of those tales, first derived from philosophers, and received by the vulgar, after the former have long ceased to believe in them. In the same latitudes, where, in the north of Europe, agri- culture and gardening are carried on, we find in North America and North Asia only marshes and tracts of land co- vered with mosses : in the interior of Asia, on the other hand, the powerful radiation of heat, between the almost parallel chains of the Himalaya, the Zungling' and the Himmelsgehirge^ (a country on which Klaproth's geographical researches have thrown great light), exercises the most beneficial influence on the Asiatic population. The line of permanent snow, on the northern declivity of the Himalaya, lies 4000 feet higher than on the southern ; and the physical explanation which I have given of this singular phenomenon *, has, according to a report of Mr Colebrooke, been confirmed by recent measurements and observations in the East Indies. Millions of men of Thibetian origin, of a gloomy religious cast of mind, occupy populous towns, in a country where fields and towns would, during the whole year, be buried in deep snow, if this high table-land was less extensive and less continuous. As the currents of the atmosphere are modified in many dif- ferent manners, by changes in the declination of the sun, and by the direction of the chains of mountains on the declivities of which they descend, the currents, also, of the Hquid ocean carry the warmer waters of the lower degrees of latitude into the temperate zone. I need not here mention how the waters of the Atlantic, always moved in the same direction by the trade-winds, are carried against the dike formed by the isthmus of Nicaragua, then turn to the north, make the round of the Gulf of Mexico, flow out through the Channel of the Bahamas, proceed as a current of warm water to the north-east towards the banks of Newfoundland, then to the south-east, towards the 'group of the Azores ; and, when favoured by the north-west • Annales de Chimie et de Physique, torn. iii. p. 297 > torn. ix. p. 310 ; torn, xiv. p. 5. Temperature of the Globe. 845 wind, carry along with them the fruits of palm trees from the An- tilles; casks of French wines from wrecked ships; nay, even living Esquimaux in their leather boats from East Greenland, which, they cast on the coasts of Ireland, of the Hebrides, or of Nor- way. A travelled astronomer, Captain Sabine, who, after re- turning from the Polar llcgions, performed experiments with the pendulum in the Gulf of Guinea, on the African Island of St Thomas, informed me, how casks of palm oil, which had been lost by shipwreck at Cape Lopez, a little south of the Equator, were carried onwards, first by the equatorial current, and then by the Gulf Stream, crossing the Atlantic twice, from east to west, and from west to cast, between 3° and 50^ N. Lat., safely arrived on the coasts of Scotland. The well preserved mark of the African proprietors left no doubt as to the direc- tion the casks had taken. In the same manner, as in this case, the equatorial waters in the Atlantic are carried north by the Gulf Stream, I have, in the Pacific, in its southern hemisphere, observed a current (along the coasts of Chili and Peru), which carries colder water from Ivgher latitudes to the Tropics. In this current I saw the thermometer, in the port of Truxillo, in the month of September, fall to 61° Fahr. (1J^°.8 R.) and in the port of Callao, near Lima, at the end of November, to GCT Fahr. (12°.4 R.) A distinguished young officer of the Danish navy. Baron Dirckinck von Holmfeldt, has, at my request, at different seasons of the year 1825, observed this singular phe- nomenon, to which for so long a time no attention had been paid. Making use of thermometers, carefully compared by Mr Gay Lussac and myself, he again found the water of the sea, in the port of Callao, in August 60i ° Fahr. (12°.6 It ) and in March 674° Fahr. (15°.7 R.) Whilst, out of the curren^ at the pro- montory oi Parina, the calm sea, as usually in those latitudes, showed the great heat of 794° to 8r.5 (21° to 22° R.) We cannot, in this place, explain how this stream of colder water, which increases the difficulty of the southern navigauon from Guayaquil to Peru, and from Peru-to Chili, is for some months modified in its temperature by the Garua, i. e. the vapours wliich constantly veil the sun ; and how it renders the climate of the plains of Peru cooler. As all human attempts to arrive at a scientific view of the 346 Mr Ncill on the Habits of a phenomena of nature can have for their final object only a clear conception of our own nature, thus the investigation, with the principal topics of which we have now been occupied, at last leads us to consider, how the differences of climate manifest themselves in the character, in the civilization, and, perhaps, even in the development of the language of different tribes of the human race. This is the point where the important doctrine of the dis- tribution of heat over the globe comes to be connected with the history of mankind, and beyond which it ceases to be an ob- ject of purely physical inquiry. Some Account of the Habits of a Specimen of Siren lacertina, which has been Jcept alive at Canonmills, near Edinburgh, for more than two years past. By Patrick Neill, A. M., F. R. S. E. and Sec. W. S * Communicated by the Author. XT is more than half a century since Dr Alexander Garden of Charleston, South Carolina, sent to the distinguished Mr John Ellis of London, specimens of a reptile found in marshes in his neighbourhood, remarkable for possessing both external gills and internal lungs, and for having fore-feet but no hind-feet. Dr Gar- den stated, that he had seen specimens of very different sizes, all possessing the gills, and having only fore feet ; and that there did not exist in South Carolina any lizard, of which this animal could be regarded as the larva. Mr Ellis, in his excellent ac- count of the reptile in the Philosophical Transactions, vol. Ivi., accordingly describes and figures a young one, 9 inches long, and one full grown, or 2 J feet long ; yet both possess the gills, and both have two feet only ; the feet have four toes, and each toe is furnished with a claw ; and he mentions that the animal emits a " croaking noise or sound," while the |X)ssessing of any kind of voice is not charactenstic of a larva. These facts, and the examination of a dead specimen, transmittt^d by Mr Ellis to the illustrious Swedish naturalist Linnaus, were enough to satisfy him that it was not a larva, but a perfect animal of the most truly amphibious character; and he therefore created for it a new order, Meantes, among his Amphibia. Several distin- * Read before the Werner iaii Natural History Society, 12th January 1828, living Specimeii of Siren laceriina. 547 fished naturalists, however, have disputed the opinions of Gar* den, Ellis, and Linnaeus ; particularly Camper, Pallas, Schnei- der, and De Lacepede. All of these have held, that the siren is not a perfect animal, but merely the larva of some Proteus or Laccrta, which, as it should approach maturity, would throw off the branchia?, and perhaps also develope hind-feet. De La- cepede was the most positive in this opinion ; but he was soon met by another French naturalist, of greater acumen and of still higher name. In a memoir read to the Institute of France in 1807, Bai'on G. Cuvier concluded, from a minute anatomical examination, that the siren was the type of a distinct genus, the osseous struc- ture of which differed essentially from that of the salamander or of the proteus ; the skeleton proving that the animal was not destined ever to develope hind-feet, while there appeared no provision for the throwing off of the branchial. Cuvier con- firmed, in short, the opinion which Linnaius had formed from studying its external characters and from Dr Garden'^s account of the habits of the animal The controversy has been continued with zeal and spirit. The distinguished Italian naturalists Configliachi and Rusconi, from considering the analogy between the Siren and the larva; of other Batrachia, have disputetl the conclusions of Cuvier, and still regard it as an imperfect animal. Among other arguv/ ments, they adduce the following, which shall be quoted in their own words : " Before this canal (the nostril) is so formed (as to open into the mouth), such larvae are unable to respire atmos- pheric air, and if taken out of the water they soon die ; and, therefore, guided by analogy, we incline to beUeve that to the siren the same thing ought to happen ♦." (i That excellent zoologist our countryman Dr Fleming of Flisk • See account of Configliachi and Rusconi's Memoir, b^ Daniel Ellis, Esq., in the Edinburgh Philosophical Journal, vol. v. p. 106. et seq. The oii. ginal passage runs thus : ^^ Sin tanto f he queslo canale non tn ^ formato** (in such a manner that its posterior extremity may open into the mouth), '• Ic larve delle salamandrc non possono respirare Taria atmosfcrica in mode ni uno, e (luindi sc vengono tratte all' asciutto, si muojono ; per lo chc aol, gui- tlati scmprc ilalla analogia, incUniamo a credere che alia strena, le cul narici " ne pcnetrent point dans la bouche," debba pure accadere lo stcsso."— ZW Pi'oko aiiguino di Laurmi't MoiHigrdJia ; Favin, \ni{), p. 104. 348 Mr Neill m the Habits of a (whose fame will be greatly raised by his recent work on " British Animals"'') adopts the reasoning of the Italian natura- lists, and vindicates their conclusions, in his " Philosophy of Zoology,'' vol. ii. p. 297. It is remarkable that some parts of the natural history of the siren should still be very imperfectly known, not only to eminent European naturalists, but even to acute observers residing in the United States. We have seen that Configliachi and Rus- coni are of opinion that the siren, if taken out of the water, would soon die; and we may add, that the author of the article Herpetology in the Edinburgh Encyclopaedia observes, that the Siren lacertina '' appears to reside entirely m the water. It was supposed by Linnaeus, from the form of its feet, that it can also move with tolerable ease upon the land ; but we believe it has never yet been seen in that situation." In a paper on the genera of batrachian animals, by Mr Barnes, secretary of the New York Lyceum (published in Silli- man's American Journal, October 1826), we have the most re- cent notice regarding the siren. After describing the animal, he mentions some facts illustrative of its habits, and alludes to some of the opinions entertained concerning it. We are told, that " a specimen in Scudder's Museum (New York) has al- ready lived several years in a glass jar of clear water ;" and others an equal length of time " in a tub containing mud brought from their native marshes in Carolina." These, " when taken from the mud, immediately struggle to return, and seem contented only when they are in their natural element. When they are concealed in their retreat, the place of the head and gills is readily known by the rising of small air-bubbles from their spiracles ; — a fact which may lead to the determination of the function of these doubtful organs." " Several authors affirm that sirens thrown on the ground break into several pieces." While Mr Barnes hesitates to believe this, he adds, ^' But the want, or the high value of specimens among us *, • The siren, though not uncommon in the days of Garden, seems now to have become a rare animal even in South Carolina. M. Bosc, in the New Pictionary of Natural History (xxxi. p. 317), mentions that, during a resi- dence of a year and a-half near Charleston, he was not able to find one living specimen, although he was desirous of studying tlie habits? of so curious an onim^. living Specimen of Siren lacertina. 840 will probably prevent this fact from being proved or disproved r, by actual experiment.'" Lastly, it is said, " It does not appear, by the most careful observations of modern naturalists, that the animal has a vox cantUlans, and the idea which produced the generic name is therefore imaginary." In the early part of the summer of 1825, Dr Farmer of, Charleston, South Carolina, sent to Dr Monro, Professor of Anatomy and Surgery in the University of Edinburgh, a li- ving specimen of the animal. It was nearly a foot and a half, long, and was four inches in girth where thickest. It came in a small barrel, which was half filled with mud and water, and per- forated above. On its arrival in this country it seemed in a slug^ gish state ; and it was not observed to eat any thing whatever for . many weeks. Dr Monro being desirous that the animal should, if possible, be preserved alive, and its habits noted, confided the charge of it to me ; and I certainly feel much indebted to the Doctor for placing so rare and curious an animal in my hands. Although, during the two years and a-half it has been in my possession, no perceptible change has taken place in the form or size of the fimbriated branchiae, and although I cannot boast of having made any new or very striking observations, yet perhaps I am able to add a little to our stock of knowletlge regarding this singular animal, and to confirm some and refute others of the opinions above related. Immediately on receiving the specimen, a large wooden box was prepared, with an inclined plane at one end of the interior, so that the animal might, when it chose, raise itself out of the wa- ter more or less, and repose in that situation. At first we placed a quantity of sand in the bottom of the box, in the expectation that the siren would burrow in it ; but we after- wards found that tufts of mosses (hypnum or sphagnum) were better suited to the taste and habits of the animal, as it evident- ly delighted to hide itself under the moss, to lie upon it, and to root amongst it. Soon after it came into my possession I found that, in a warm day, it would eat one or two small eardi-worms, when placed close by its head, so that the struggles of the worm, in drowning, should attract its attention (for its eyesight does not seem acute); but that it would take ho more food till after the lapse of per- 350 Mr Neill on the Habits of'a haps a week or ten days. At this time it swallowed its food very slowly and gradually, sometimes allowing one-half of the worm to continue wriggling about its nose for some minutes, while the other half was in its mouth and gullet. On one occa- sion, some small bansticklcs were put into the box alive : after a day or two, th^ largest of these was found floating dead, with a considerable piece apparently bitten from its side, the wound being nearly equal to the width of the siren's jaws. Although the siren was not actually observed to attack the banstickle, there can be htde doubt that he had seized it, and taken the piece from its side ; more especially since Dr Garden mentions that, on one occasion, a siren was " caught by a hook baited with a small fish." The smaller bansticklcs were never more seen ; and two or three of the larvae of the Lacerta aquatica, which were placed in the box soon afterwards, likewise disappeared. For the first year and a half, the box was kept in a green- house, adapted for keeping Cape of Good Hope and New Holland plants, or where it is merely desired to exclude the frost of our winter. In this situation, the siren declined eating from a1>out the middle of October till the beginning of May ; and for the six intervening cold months he remained exceedingly slug- gish, seldom changing his place, except when roughly touched. It may liere be remarked, that the tail seems to be the most sensitive part of this animal. I have often gently stroked the back, near the head, with my fingers, without disturbing him in the least ; but the moment the tail was touched, some air-bubbles were thrown up, and he moved slowly away. In April 18^7, the box was placed in a hot-house, intended for the culture of tropical plants, where the temperature is kept up so as to range from iiO" to 80° F., and may be stated as general- ly about 65". Here the animal became more lively. He soon began to croak like a frog, uttering a single cry at a time, and without any change of note. He continued thus to call for some weeks ; and, considering the time of the year, it seems pro- bable that this was the call of love. During this summer he ate two, three, or even four, small earth-worms at a meal, devour- ing them much more quickly than formerly. It was now ob- served, that after the siren got his eye on the worm, he approach- ed very cautiously, remained motionless for a moment, as if living Specimen of Siren lacertina. ^W watching, and then made a sudden dart upon the prey. Still, however, he did not care for food oftener than once in a week or ten days. When touched, he now changed his place with a jerking motion, causing the water to spurt. '"^ Although I certainly would not have made the experiment of the fragility of the siren, by throwing it on the ground'? and although I would have hesitated to keep the animal out of the water for several hours, while I knew that respectabl6 naturalists doubted if it would live more than a few minuted out of that element, yet it so happened, that the animal, on one occasion, made, of his own accord, an experiment (if it may be so called) illustrative of both points. This was on the 18th of May 182G (for the fact was recorded in my adversaria at the time), soon after he had begun to be active and to take food foi' the season. The water-box itself was ten inches deep : it was placed on a plant-trellis or shelf, close by the lower end of the sloping roof-sash of the greenhouse, and thus stood nearly three feet from the ground. At tlmt period the box happened to leak; and the gardener therefore filled it up with water between se- ven and eight o^clock in the evening, at which time the siren was seen safely lodged in the box. The door of the greenhouse was locked, as usual, over night, and before it was opened in the morning, the siren, to the great surprise of the gardener, was found lying on a foot-path which passes round the exterior of the greenhouse. I was speedily apprised of the circumstance; and, on examining the spot, we could most distinctly trace, by a shining glaze derived from his skin, the passage of the animal^ through an edging of hcalli (Erica herbaceaj, and across a nar- row flower-border, to a hole which he had scoojxjd out under the brick-wall of the greenhouse, in escaping from within. The foundation of this wall, it may be remarked, had intentionally been made shallow or near to the surface, for the pur}K>sc of per- mitting the roots of some shrubs, planted in the conservatory style within, to }K»netrate to the exterior border. We jwssess no data for fixing witli certainty tlie nunil>er of liours during which the animal had been out of the water. The' box, as alreatiy mentioncil, being leaky, was filled near to the brim iK^tween 7 and 8 in the evening : it Hcems likely that this filling up had disturbed the animal, and that it had been ena- bled partly to crawl and partly to glide over the margin, while d&% Mr Neill m the Habits of a the water yet stood high, or early in the night ; for the water had subsided five or six inches before morning. The escape of so much water, had formed, of the soil below, a kind of sludge, probably somewhat analogous in character to the " stiff clay"" of its native swamps, in which it is said sometimes to burrow ; •and this must have greatly facilitated the first under-ground operations of the siren. Still, however, as the excavation made was not less than eight inches in depth, and nearly three feet in length, for the ascending aperture on the outside sloped at an angle of about 30°, it seems reasonable to conclude that the siren must have been several hours hard at work in forming so extensive a tunnel for itself. In farther proof of its exertions, it may be observed, that a considerable part of the dark-coloured epidermis, or covering of minute indistinct scales, was worn off its snout, and the skin of the upper part of the back was, in different places, ruffled. — In passing, it may be noticed, that these facts indicate that its progress had depended more on rooting with the nose and shoving with the shoulders, than on digging or scraping with the feet and toes, the claws or nails of which are indeed rather of a delicate texture. Mr Barnes was evidently right, therefore, in considering the fragility of the siren as " improbable ;"" for, far from being broken in pieces, by its fall of more than three feet and a-half from the upper margin of the box, it is abundantly evident that the animal had suffered nothing from this fall, else it would not immediately afterwards have made such progress in mining. In justice to Dr Garden, however, who was evidently an accu- rate observer, it should be mentioned, that he does not allege that the siren, if merely " thrown on the ground," will break in pieces ; but only states that, on one occasion, a specimen did so when " dashed Jbrdhly against the ground,'** by his servant, with the view of killing it. The morning was very cold, and the mercury in a register- thermometer, kept in the greenhouse, had been as low as 33° Fahr. at one period of the preceding night. The animal was observed about 7 a. m. lying doubled, or with the body bent round, but not coiled, on the foot-path. He was exceedingly benumbed, being just able to shew signs of life when lifted by the gardener. Considering the evidence of long-continued ac- tive exertions during the night, it seems reasonable to ascribe living Specimen of Siren lacertina. 353 his almost torpid state when found, to the freezing cold which he had encountered when he had made his way fairly to the outside. When first restored to the watery element, the animal breathed hard, rushing to the surface, and opening his mouth with a wide gape to inhale air. He soon after sunk down, and let se- veral strings of air-bubbles escape. The branchiae were doubt- less to a certain degree dried, and thus obstructed ; and it evi- dently took some time before they could freely perform their accustomed office. When, however, I again examined the ani- mal, several hours afterwards, he seemed perfectly contented to remain wholly under the water ; and, on being touched, ap- peared as lively and as well as ever. The decorticated portions of the back and snout shewed us the colour of the true skin below, which was of a pale leaden hue. In the course of changing the water and moss, we have oc- casionally placed the siren on the floor of the hot-house, or on the dry ground. He certainly did not on these occasions seem adept at progressive motion: but, on the contrar)*^, tumbled about rather awkwardly. From the exertions he made, how- ever, we were inclined to think, that among wet grass he might probably get on pretty well ; for he exhibited no indications of pain or uneasiness, but merely a desire to escape or get under cover. We have often remarked this fact, that, if the animal be left in undisturbed tranquillity, he will lie at the bottom of the deepest part of the box, where the water is generally six inches deep, for hours together, without coming to the sur- face, and without discharging air-bubbles; but on these oc- casions, on looking attentively into the water, as I have done for twenty minutes at a time, a slight current may be observed to be excited behind the gills, about twice in a minute. The current is sometimes so gentle, that it is only to be observed by noticing the motion of minute particles of decayed moss which come within its influence. The moment his tail is touched, the animal exerts himself; air-bubbles escape, and he soon after comes to the surface to take in air by the mouth. When the box is to be cleaned out, which is done about once a fortnight, the siren is placed in an oval jar among water ; here he moves about with rapidity, and very frequently projects his nose and mouth above the surface, evidently to inhale air. 354 Mr Neill on the Habits of a The animal has, since it came into my possession, decidedly increased in volume, particularly in thickness or plumpness ; but I am not, as already noticed, aware of the least change having taken place in the appearance of the fimbriated branchia?, where a change should first be looked for were the animal a larva. The scars of the injuries which he received in his subterra- nean excursion of May 1826, remained visible for a year after the occurrence ; but they have now (January 18^8) completely disappeared, and the whole body is covered with a dark glossy epidermis, consisting of very minute scales, and marked with small dots of white. j^^The results of the observations now made seem to be : — That, as Dr Monro'*s specimen of the Siren lacertina did not " soon die when out of the water," — did 7iot^ like the Italian pro- teus, " die as fishes do,"" when removed from that element,'-^biit, on the contrary, lived many hours out of the water, respiring atmospheric air by means of its lungs ; and as it has often been observed to remain for hours under the water without coming to the surface to breathe. Baron Cuvier is right in regarding the siren as a perfect animal, of a truly amphibious character, destined to breathe through life either by means of external branchiae or of internal pulmonary apparatus, according to the situation it may for the time occupy in its native marshes :— That Mr Barnes was right in doubting the story of its being a fragile animal ;- — That it has a voice like the croaking of a frog, but not a vojc cantillans^ if this last imply any thing musical ; but here it should be remarked, that Mr John Ellis accurately characterizes it as a " croaking noise or sound i"— That, as it attacked a large banstickle, and probably devoured some small ones as well as larvae of Lacerta aquatica, it may, in its native lakes and swamps, attack small fishes, or even small serpents, as mentioned by some naturalists : — That Configliachi and llusconi have been misled by trusting to " analogy," and, by an error of Dr Pockels, who mistook the Amphiuma means^ which he saw in the Hunterian collection at London, for a per- fectly developed siren. These naturalists expressly admit, that they had not themselves enjoyed an opjxjrtunity of dissecting a siren {p. 90- Note) ; and it is also evident from dther parts of their monograph, that they had never seen a living specimen- living Specimen of Siren lacertina. 355 P. S. Since Uiis paper was read to the Wcmerian Society, I have seen, in Silliman's American Journal of Science, Septem- ber 1827, p. 70. an additional notice regarding the siren by Mr Barnes ; in which he says, " Captain Le Conte has dissected a large siren alive^ and has actually seen the expansion and con- traction of the lungs in the act of respiration, just as in the frogs and tortoises. They are true lungs^ and not merely air sacks, and their connection with the heart and the arteries was distinct- ly observed.*" A Tour to tlie Smith of France and the Pyrenees in the year 1825. By G. A. Walker ARNoTT,Esq. F.R.S.E. F.L.S. M. W. S. &c. (Continued from last Number, p. 139.) \JN the 21st June, having, with much regret, seen our two friends MM. Requicn and Audibert set off in the diligence for Perpignan, we ourselves also left I*rades, and ascended the Couf- flent towards Mont Louis, On our route we again passed the Traucadc d'Ambouilla, and though we did not find it conve- nient to leave the road, we nevertheless observed there Tortula cfUoronotos, probably the identical station from whence Bridel procured his specimens when he first dcscrilxxl the species; and though small specimens have since been found in TencrifTe, and published by Dr Hooker as Tortula vicmbranifolia^ and though, as I think I have already mentioned, I have found it not un- common in the olive district of the south of France *, this loca- lity was yet very interesting. In its neighbourhootl also, we saw Buffania perennis, Galium glaucuniy and Jlyssum halimi- fbliuju, all of which, however, we had observed on other |)arts of the Traucatle a few days before. Passing through Ville- franche, wc saw in profusion Sarcocapnos cnncaphylhy on ele- gant plant, closely allied to Fnmaria : this occurs both on llie church walls and on the wall of the town, outside of the south gate. We now crossed the Teta, and proceeded up the western • It has also been found in Switzerland, and is the T. mmm fU^ var. noia-, ot* somQ of the Swiss collectors ; and it even exiuLs in Beauvois* hortiii- rium from the neighbouriioiKl t)!' Paris, under the name of Torhtia canestmt, P.B. ..t 356 Mr Arnott's Toiir to the South of France, bank, without observing any thing worthy of notice, till we ap- proached the village of Serdynia. On the mountain close to this is found the Onopordum pyrenaicum ; and, soon after quit- ting the village, we met with the curious Achillcea chamcemeli- Jbliay Pourr. growing on the bank on the right. This species Lapeyrouse has unfortunately described three times in his Flora of the Pyrenees : it is his A, chamtEmelifolia, A. capiUata, and A. falcata. This latter state of it has the segments of the leaves more or less curved backwards, and has been sometimes given to botanists by Lapeyrouse himself with the name of A. recur- vifolia attached. From Serdynia to Olette, where we break- fasted, we did not observe any other plant that interested us. I have already alluded to the tremendous storms that had occurred every day for some time past. Although the morn- ings were unclouded, and the sun shone forth in full power, the sky began to darken about two oVlock, and thunder, lightning, and rain raged with the utmost fury for about two or three hours, after which we usually had delightful evenings. Accus- tomed to judge of the violence of the storms according to the extent of our exposure to them, we, having been the greater part of the day in the house, had allowed that of yesterday to pass almost unheeded. To-day, however, about Olette we were led to understand that its violence had been much greater, and of longer duration, than those of any of the previous days.~ The effects indeed were tremendous. Huge masses of stone had been brought down from the hills by the torrents of rain, and now lay scattered along the road : the upper soil of the vine- yards had been completely washed away, while the vines them- selves lay scattered in every direction. The peasantry already saw the hopes of a harvest blasted. Leaving Olette. the road again crosses the Teta, and the ascent becomes very steep, until we arrive at the Graux d'Olette, a ro- mantic spot, where we found Buffonia perennis, and the narrow- leaved variety of Centraullius ruber (C. angustifoUus of au- thors). From this the river begins to present several small but beautiful cascades, and although the road descends a little at the Graux, it soon again begins to ascend rapidly. Passing the village of Thues, we saw Ligusticiim (Cnidium Spr). pyrenai- cum abundant ; and towards Fontledrouse and Cassagne we 'and the p7/rmees, in ^ 8^5. 867 observed in the meadows a rough-scaped Armeria, that we had previously observed at Bellegarde and La Jonquiere : it is pro- bably A. plaiitaginea, if indeed the whole genus Armeria he not reducible to one species. Although the morning had hitherto been fine, the clouds and mist now began to gather on the hills, and indicated an ap- proaching storm. This induced us to neglect botany, and hur- ry onwards. About a mile from Mont Louis we again crossed the Teta. At this point there were close to us some consider- able water-falls ; but the noise of the water was not sufficient to conceal that of the thunder, which at the instant burst upon us in awful grandeur. For a few seconds we attempted to pro- cure shelter under a projecting rock, but immediately deemed it more prudent, being thoroughly wet, to proceed. Whilst there, two bolts must have burst within a few yards of us, so instantaneous were the flash and the peal. We arrived, how- ever, safely at Mont Louis, or rather at the cabanasse or vil- lage close to the fortress, where indeed we were to procure ac- commodation, being more convenient for us than the fort, on account of their shutting the gates, and pulling up the draw- bridge, at night. Our horses had arrived a short time before us, without much damage done to either our paper or plants, a circumstance which now interested us more than ourselves. To-day in our ascent we saw abundance of Sempervivum arachnoideum in flower : S. montanum also occurred : Sedum brevissimum, DC. was observed, but in small quantities. Be- tween the Graux d'Olette and Thues, we found Cistus lauri- filius in profusion on both sides of the road, and it is not im- probable that the few plants of this species we formerly found at Perpignan, may have been carried down there from this sta- tion by the stream. Medicago suffruticosa has been every where abundant since we entered the mountainous district. I liave already stated, that our new species M. leicarpa resembles' this closely, but differs by the glabrous fruit. I may remark here in addition, that M. leiocarpa always grows on the chalky or limestone range, while the other species, M. stiffruticosOy is found only on the schistose and older formations. We have occasionally observed a few plants of the latter, it is true, down JA-NUARY MARCH 1828. A a 358 Mr Arnott's Tour to the South of Frcmce, in the plains, but always in the beds of mountain rivulets, indicating that these were stragglers, and had been carried down by torrents. On the 23d, being rainy and disagreeable weather, our excur- sion was short, confining ourselves to the immediate vicinity of the cabanasse. In meadows, however, close to the road that leads to Mont Louis, we met with Dimithus atroruhens, Pedicularis verticillata, and Trifolium spadiceicm, all abundant, and in an excellent state for preservation. Near them also was Vicia ono- hrycJioides. Descending the road we had come by yesterday for a little way, we then crossed a small stream on the right, and found on a bank beautiful specimens of Didymodon glaucescens. Genista * sagittalis and purgansy and Drdba nemoralis. There • I take this opportunity of stating, that Cytisus heterophyllus^ Lap., is, I think, identical with Genista prostrata, Lam. and DC. Prod. This plant must not, however, be confounded, as has been done by WiUdenow, and even by De CandoUe in the Flore Francaise, with G. decumbens, W. M. De Candolle, in the Supplement to the Flore Francaise, himself desires this synonym to be excluded ; and though he does not cite Willdenow's plant under G, pros- irata in the Prodromus, 2. p. 152, he leaves it as undetermined, or, in other words, he omits all notice of it. Willdenow, in his description (vol. iii. p. 941), points out how his plant dilFers from G. procumbens, W. K. ; aiwl I think there are few who have seen Lamark's G. prostrata, that will not immediately re- cognise it and G. procumbens, W. K., and DC. Prod, to be one and the same. The G. procumbens of Schleicher is also G. prostrata ; but G. decnmbens of the same is G. pilosa, Linn. As to G. decttmbens, W., or Spartium decumbens^ Ait., it may be distinguished by verbatim the same character that Sprengel applies to G. prostrata (v. iii. p. 220.) : he adduces, however, G. deeumbens. W. as a sy- nonym, and his description was probably drawn up with a view to that plant. It will also be easily perceived that SprengePs Cytism procumbens (iii. p. 224.) is the true G. prostrata. I shall here also notice another mistake that has crept into, the Prodromus in the allied genus Cytisus. C. capitatus is inserted in the Flore Francaise ; but in the Supplement, De Candolle points out the error, and states that it is C. supinus that has been taken for it ; yet it is to the C. supinus he alludes in the Prodromus, when he says that it grows in the east of Burgundy, and that its " Flores interdum autumno laterales evadunt." As to the C supintts in the Prodromus, he has both kept it as a good species, and at the same time reduced it to C bijlorus. Lastly, his character of C. supinus, in the Supple- ment to the Flore Francaise, p. 549, " la levre superieure a 3 dents, Finfe- rieure a 2 parties,'* is extremely incorrect. C. hirsutus, Schleicher, is C. sm- pinrn. C. supinus., Lapeyr. on the other hand, is the true C. capitatus ; but what his C. capitatus is I am not sure ; probably a mixture of C. capitatus and C supim(s. and the Pyrenees^ in 1825. 359 was here a thicket of Lonkcra Xylostenm, and some pretty spe- cies of the genus Rosa^ but of which at present we did not ga- ther any. Thlaspi alpestre. Asperugo proaimbensy and Apar- gta pt/renaica, we observed, but sparingly. There were also here some alpine mosses, as the piliferous variety of Trichosto- mum patense of any service for some time to come, I gave up the idea of taking them. Having received the usual saluta- tion of three cheers from those we left behind, we paddled through a quantity of loose ice at the entrance of the bay, and we steered, in a perfectly open sea, and with calm and beautiful weather, for Low Island, which we reached at half past two in the morning of the 22d June. Having deposited the pi-ovisions, we set off for Walden Island, which was soon reached, and another deposit of provisions made.'' Lieutenant Crozier now parted from them, and the boats pursued their course north waids. The following is Captain Parry's account of their mode of travelling*: "• Our plan of travelling," he says, speaking of the journey over the ice af- ter leaving the Hecla, " being nearly the same throughout this excursion, af- ter we first entered upon the ice, I may at once give some account of our usual mode of proceeding. It was my intention to travel wholly at night, and to rest by day, there being, of course, constant daylight in these regions du- ring the summer season. The advantages of this plan, which was occasional- ly deranged by circumstances, consisted, first, in our avoiding the intense and oppressive glare from the snow during the time of the sun's gi-eatest altitude, so as to prevent, in some degree, the painful inflammation in the eyes called * snow-blindness,' which is common in all snowy countries. We also thus enjoyed greater warmth during the hours of rest, and had a better chance of drying our clothes ; besides which, no small advantage was derived from the snow being harder at night for travelling. The only disadvantage of this plan was, that the fogs were somewhat more frequent and more thick by night than by day, though, even in this respect, there was less ditference than might have been supposed ; the temperature during the twenty ^four hours under- * Narrative, p. 55. to reach the North Pole in 1827. 365 j^oing but little variation. This travelling by night, and sleeping by day, so completely inrerted the natural order of things, that it was difficult to per- suade ourselves of the reality. Even the officers and myself, who were all furnished with pocket chronometers, could not always bear in mind at what part of the twenty-four hours we had arrived ; and there were several of the men who declared, and I believe truly, that they never knew night from day during the whole excursion. When we rose in the evening, we commenced our day by prayers, after which, we took off our fur sleeping-dresses, and put on those for travelling ; the former being made of camblet, lined with ra- coon-skin, and the latter of strong blue box-cloth. We made a point of al- ways putting on the same stockings and boots for travelling in, whether they had dried during the day or not ; and I believe it was only in five or six in- stances, at the most, that they werfe not either still wet or hard-frozen. This, indeed, was of no consequence, beyond the discomfort of first putting them on in this state, as they were sure to be thoroughly wet in a quarter of an hour after commencing our journey ; while, on the other hand, it was of vital importance to keep dry things for sleeping in. Being ' rigged * for travelling, we breakfasted upon warm cocoa and biscuit, and after stowing the things in the boats and on sledges, so as to secure them as much as possible from wet, we set off on our day's journey, and usually travelled from five to five and a half hours, then stopped an hour to dine, and again travelled four, five, or even six hours, according to circumstances. After this we halted for the night, as we called it, though it was usually early in the morning, selecting the largest surface of ice we happened to be near for hauling the boats on, in order to avoid the danger of its breaking up, by coming in contact with other masses, and also to prevent drift as much as possible. The boats were placed close alongside each other, with their sterns to the wind, the snow or wet cleared out of them, and the sails, supported by the bamboo masts and three paddles, placed over them as awnings, an entrance being left at the bow. Every man then immediately put on dry stockings and fur boots, after which we set about the necessary repairs of boats, sledges, or clothes ; and, after ser- ving the provisions for the succeeding day, we went to supper. Most of the officers and men then smoked their pipes, which served to dry the boats and awnings very much, and usually raised the temperature of our lodgings 10 or 15 degrees. This part of the twenty -four hours was often a time, and the on- ly one, of real enjoyment to us ; the men told their stories, and * fought all their battles o'er again,' and the labours of the day, unsuccessful as they too often were, were forgotten. A regular watch was set during our resting-time, to look out for bears, or for the ice breaking up around us, us well as lo attend ^ to the drying of the clothes, each man alternately taking his duty for one ' hour. We then concluded our day with prayers, and having put on our fur dresses, lay down to sleep, with a degree of comfort which perhaps few per- sons would imagine possible under such circumstances ; our chief inconve- nience being, that we were somewhat pinched for room, and therefore obliged to stow rather closer than was quite agreeable. The temjKjrature, while we slept, was usually from 36° to 45°, according to the state of the external at- mosphere ; but on one or two occasions, in cabn and warm weather, it rose as high as 60* to 66% obliging us to throw oft* a jiart of our fur dress. After we 366 Narrative of Captain Parry's Attempt had slept seven hours, the man appointed to boil the cocoa roused us, when it was ready, by the sound of a bugle ; when we commenced our day in the manner before described. Our allowance of provisions for each man per day was as follows : — Biscuit - - - 10 ounces. Pemmican - - 9 do. Sweetened Cocoa Powder - 1 do. to make one pint. Hum ... 1 gill. Tobacco - - - 3 ounces per week. Our ftiel consisted entirely of spirits of wine, of which two pints formed our daily allowance, cocoa being cooked in an iron boiler over a shallow iron lamp with seven wicks,— a simple apparatus, which answered our purpose remark- ably well. We usually found one pint of the spirits of wine sufficient for preparing our breakfast ; that is, for heating twenty-eight pints of water, though it always commenced from the temperature of 32°. If the weather was calm and fair, this quantity of fuel brought it to the boiling point in about an hour and a quarter ; but more generally the wicks began to go out before it had reached 200'. This, however, made a very comfortable meal to persons situated as we were. Such, with very little variation, was our regular rou- tine during the whole of this excursion." The quantity of rain which fell was truly extraordinary. Captain Parry remarks, on the 26th June, that they had al- ready experienced, in the course of this summer, more rain than during the whole seven previous summers taken together^ though passed in latitudes from 7° to 15° lower than this. The expedition, in its progress northwards, experienced per- petual difficulties and delays from the broken state of the ice, and from its nowhere occurring in fields. The following observa- tions convey a striking picture of the nature of their travel- ling * : — " As soon as we landed on a floe-piece, Lieutenant Ross and myself gene- rally went on a-head, while the boats were unloading and hauling up, in order to select the easiest road for them. The sledges then followed in our track Messrs Beverly and Bird accompanying them, by which the snow was much trodden down, and the road thus improved for the boats. As soon as we ar- rived at the other end of the floe, or came to any difficult place, we mounted one of the highest hummocks of ice near at hand, (many of which were from fifteen to five and twenty feet above the sea) in order to obtain a better view around us ; and nothing could well exceed the dreariness which such a view presented. The eye wearied itself in vain to find an object but ice and sky to rest upon ; and even the latter was often hidden from our view by the dense and dismal fogs which so generally prevailed. For want of variety, the most trifling circumstance engaged a more than ordinary share of our atten- * Narrative, p. 67. io reach the North Pole in 18S7. 367 tion ; a passing gull, or a mass of ice of unusual form, became objects which our situation and circumstances magnified into ridiculous importance ; and we have since often smiled to remember the eager interest with which we regarded many insignificant occurrences. It may well be imagined, then, how cheering it was to turn from this scene of inanimate desolation, to our two little boats in the distance, to see the moving figures of our men winding with their sledges among the hummocks, and to hear once more the sound of human voices breaking the stillness of this icy wilderness. In some ca8e^ Lieutenant Ross and myself took separate routes to try the ground, which kept us almost continually floundering among deep snow and water. The sledges having then been brought up as far as we had explored, we all went back for the boats ; each boat's crew, when the road was tolerable, dragging their own, and the officers labouring equally hard with the men. It was thus we proceeded for nine miles out of every ten that we travelled over ice : for it was very rarely indeed that we met with a surface sufficiently level and hard to drag all our loads at one journey ; and in a great many instances, during the first fortnight, we had to make three journeys with the boats and baggage ; that is, to traverse the same road five times over. We halted at eleven' p. m. on the 1st, having traversed from ten to eleven miles, and made good, by our account, seven and a half in a N. by W. direc- tion. We again set forward at ten a.m. on the 2d, the weather being calm, and the sun oppressively warm, though with a thick fog. The temperature in the shade was 35° at noon, and only 47° in the sun ; but this, together with the glare from the snow, produced so painful a sensation in most of our eyes, as to make it necessary to halt at one p. m. to avoid being blinded. We there- fore took advantage of this warm weather to let the men wash themselves^ and mend and dry their clothes, and then set out again at half-past three. The snow was, however, so soft as to take us up to our knees at almost every other step, and frequently still deeper ; so that we Were sometimes five minutes together in moving a single empty boat, with all our united strength. It being impossible to proceed under these circumstances, I determined, by de- grees, to fall into our night travelling again, from which we had of late insen- sibly deviated. We therefore halted at half-past five, the M'eather being now very clear and warm, and many of the people's eyes beginning to tail. We did not set out again until after midnight, with the intention of giving the snow time to harden after so warm a day ; but we found it still so soft as to make the travelling very fatiguing. Our way lay at first across a number of small loose pieces, most of which were from five to twenty yards apart, or just sufficiently separated to give us all the labour of launching and hauling up the boats, without the advantage of making any progress by wa- ter ; while we crossed, in other instances, from mass to mass, by laying the boats over as bridges, by which the men and the baggage passetl. By these means, we at length reached a floe, about a mile in length, in a northern di- rection ; but it would be difficult to convey an adetpiate idea of the labour requiretl to traverse it. The average depth of snow upon the level ]iarts was about five inches, under which lay water four or five inches deep ; but the moment we approached a hummock, the diepth to which we sank increased to three feet or more, rendering it difficult at times to obtain sufficient footing 368 Narrative of Captain Parry's Attempt for one leg to enable us to extricate the other. . The pools of fresh water had now also become very large, some of them being a quarter of a mile in length, and their depth above our knees. Through these we were prevented taking the sledges, for fear of wetting all our provisions ; but we preferred transport- ing the boats across them, notwithstanding the severe cold of the snow-water, the bottom being harder for the " runners" to slide upon. On this kind of road we were, in one instance, above two hours in proceeding a distance of one hundred yards." In defiance of these overpowering difBculties, they continued to struggle towards the north, but with little success. Their progress was very slow ; the quantity of rain which fell astonish- ed every one ; and the high state of the thermometer was equal- ly a subject of wonder. But a principal obstacle to their pro- gress northward, and one which at length forced Captain Parry to return, was the set of the arctic water towards the south. It moved at the rate of 4 miles per day ; and, when assisted by a northerly wind, which unfortunately set in, forced the floating ice on which they dragged their boats, nearly as fast south as they dragged them north. On the 10th of July, they met with fresh-water lakes on the ice, as mentioned in the following ex- tract from the narrative. " Soon after midnight, the rain being succeeded by one of the thickest fogs I ever saw, we again proceeded, groping our way almost yard by yard from one small piece of ice to another, and were very fortunate in halting upon some with level surfaces, and also a few tolerable sized holes of water. At half-past two we reached a floe, which at first appeared a level and large one, but on landing we were much mortified to find it so covered ivith immense • pondsy or rather small lakes of fresh water, that, to accomplish two miles in a north direction, we were under the necessity of walking three or four, the water being too deep for wading, and from 200 yards to one-third of a mile in length. Towards the northern margin, we came among large hununocks, liaving very deep snow about them, so that this floe, which had appeared so promising, proved very laborious travelling, obliging us, in some pans, to make three journeys with our loads ; that is, to traverse the same road five times over*." On the 12th July, they reached north Lat. 82° 14' 28/^ The day was remarkably clear and fine, and the thermometer from 35° to 36° F. " Setting out again (says the narrator) we crossed a small lane of water to another floe, but this was so intersected with ponds, and by streams run- ning into the sea, that we had to make a very circuitous route, some of the ponds being half a mile in length. If any thing could have compensated for the delay thus occasioned us, it would have been the beautiful blue colour * Narrative, p. 76. to reach the North Pole in 1827. j)eculiar to these superglacial lakes, which is certainly one of the most pleasing tints in nature. Notwithstanding the immense quantity of water still upon the ice, and which always afForded us a pure and abundant supply of this in- dispensable article, we now observed a mark around the banks of the jwnd, shewing that the water was less deep in them by several inches than it had been somewhat earlier in the summer ; and, indeed, from about this time, some small diminution of its quantity began to be perceptible to ourselves.*'* On the 14th and 15th July, the rain was excessive, at times pouring down in torrents, and this, too, in the arctic ocean, l>e- yond north Lat. 82° 14'. On Monday 16th July, in north Lat. 8T m 44", east Long. 20° 32^ 13'^ the thermometer in the shade was 37f°, in the sun 47°; a blackened bulb raised it to 51^°; and the same thermometer when held against the black painted sides of the boat rose to 58J°. They saw a mallemuck and a Ross gull, and a couple of jiies were found upon the ice. At seven o^clock on the evening of the same day, it was so warm in the sun, though the temperature in the shade was only 35% that tlie tar was running out of the seams of the boats ; and a blacken- ed bulb, when held against the paint-work, raised the thermo- meter to 72°. The temperature of the sea was 34°. July 17., in north Lat. 82° 32' 10'^, Captain Parry remarks, " prov- ed one of the warmest and most pleasant days to the feelings, that we had during the whole time we were upon the ice ; the thermometer in the shade being from 36° to 40° for several hours, and in the sun from 42° to 51 °.'' On the 19th July, towards midnight, they had smart showers of rain, with dry clear intervals between them, just as on an April day in Eng- land. This kind of weather, which continued for several hours, liarassed the men very much. On the morning of the 20th July, it is remarked, " we halted at 7 a. m., having by our reckoning accomplished 6J miles in a N. N. W. direction, the distance traversed being JO^ miles. It may, therefore, be ima- gined how great was our mortification in finding that our lati- tude, by observation at noon, was only 82° 36' 52", being less than five miles to the northward of our place at noon on the 17th, since which time we had certainly travelled twelve in that direction."'' On the 23d July, their latitude was not more than 82° 43^ 32" north, notwithstanding the distance which they had travelled over the ice On the afternoon of this day, a beautiful natural phe- • Narrative, p. 9X. 370 Narrative of Captain Parry's Attempt nomenon was observed. A broad white fog-bow first appeared op- posite the sun, as was very commonly the case ; presently it be- came strongly tinged with the prismatic colours, and soon after- wards no less than five other complete arches were formed within the main bow, the interior ones being gradually narrower than those without, but the whole of them beautifully coloured. The larger bow, and the one next within it, had the red on the outer or upper side of the circle, the others on the inner side. Lieu- tenant Ross measured the altitude of the outer arch, which was J20° 45' in the centre, its extent at the horizon 7^1° ; the altitude of the sun, which was bright at the time, being 20° 40'. The fog was quite wet, while the smaller bows were visible, which was only twenty minutes; though the large one remained, as usual, for hours together. On the 25th July, it is remarked, ^' so small was the ice now around us, that we were obliged to halt for the night at J2 a. m., being upon the only piece in sight in any direction, on which we could trust the boats while we rested.'' Such was the ice in the latitude of 82J°. The drift to the southward being much increased by a north- erly wind, and little or no progress being made, Captain Parry, on the 26th July, determined on abandoning this most hope- less undertaking. " It had for some time past been too evident that the nature of the ice with which we had to contend was such, and its drift to the southward, espe- cially with a northerly wind, so great, as to put beyond our reach any thing but a very moderate share of success in travelling to the northward. Still,, however, we had been anxious to reach the highest latitude which our means would allow ; and, with this view, although our whole object had long be- come unattainable, we pushed on to the northward for thirty-five days, or until half our resources were expended, and the middle of our season arrived. For the last few days, the eighty-third parallel was the limit to which we had ventured to extend our hopes ; but even this expectation had become considerably weakened since the setting in of the last northerly wind, which continued to drive us to the southward, during the necessary hours of rest, nearly as much as we could gain by eleven or twelve hours of daily labour. Had our success been at all proportionate to our exertions, it was my full in- tention to have proceeded a few days beyond the middle of the period for which we were provided, trusting to the resources we expected to find at Table Island. But this was so far from being the case, that I could not but consider it as incurring useless fatigue to the officers and men, and unneces- sary wear and tear for the boats, to persevere any longer in the attempt. I determined, therefore, on givipg the people one entire day's rest, which they very much needed, and time to wash and mend their clothes, while the offi- to reach the North Pole in 1827. 371 cers were occupied in making ail the observations which might be interesting in this latitude ; and then to set out on our return on the following day. Having communicated my intentions to the people, who were all much di«. ap])ointed in finding how little their labours had effected, we set about our respective occupations, and were much favoured by a renuu'kably fine day. " The dip of the magnetic needle was here 82" 21' 6", and the variation 18" 10' westerly, our latitude being 82" W %V\ and our longitude 19" 25' east of Greenwich. The highest latxtnde we reached was probably at seven A. M. on the 23d, wheit,.^ after the midnight observation^ we travelled^ by our account^ something more tfuin a mile and a half, which would carry ua a little beyond 82" 45'. Some observations for the magnetic intensity were obtained at this station. We here found no bottom with 500 fathoms of line; the specific gravity of some water brought up from that depth was 1.0340, being at the temperature of 37% when weighed. A Six's thermometer attached to the lead failed to indicate the temperature below, owing to the mercury rising past the index. The sea-water from the surface was, as usual, near the ice, in the summer time, so nearly fresh as to require only three grains to be added to the hydrometer; and at six fathoms below the surface, it was 1 0225, at temperature 37". At the extreme point of our journey, our dis- tance from the Hecla was on'y 172 miles in a S. 8" \V. direction. To accom- plish this distance we had traversed, by our reckoning, 292 miles, of which about 100 were performed by water, previously to our entering the ice. As we travelled by far the greater part of our distance on the ice three, and not unfrequently five times over, we may safely multiply the length of the road by 24 ; so that our whole distance, on a very moderate calculation, amounted to 580 geographical, or 668 statute, miles, being nearly sufficient to have reached the Pole in a direct line. Up to this period we had been particularly fortunate in the preservation of our health ; neither sickness nor casualties having occurred among us, with the exception of the trifling accidents already mentioned, a few bowel complaints, which were soon removed by care, and some rather troublesome cases of chilblains^ arising from our constant exjK)- sure to wet and cold. " Our day of rest proved one of the warmest, and most pleasant to the feelings, we had yet had upon the ice, though the thermometer was only from 31" to 36° in the shade, and 37* in the sun, with occasional fog; but to per- sons living constantly in the open air, calm and tolerably dry weather affords absolute enjoyment, especially by contrast vith what we had lately experi- enced. Our ensigns and pendants were displayed during the day ; and sin- cerely as we regretted not having been able to hoist the British flag in the highest latitude to which we had aspired, we shall perhaps be excused in ha- ving felt some little pride in being the bearers of it to a parallel considerably beyond that mentioned in any other well authenticated record •." The journey back to Spitzbergen, although more expeditious than that towards the Pole, was attended with great fatigue and much danger. On the 2d of August the travellers met with red s^iowy of which the following account is given : • Nwtatlve, p. 108-10?. 572 Narrative of Captain Parry's Attempt "■ In the course of this day's journey we met with a quantity of snow ting- ed, to the depth of several inches, with some red colouring matter, of which a .portion was preserved in a bottle for future examination. This circumstance recalled to our recollection our having frequently before, in the course of this journey, remarked, that the loaded sledges, in passing over hard snow, left upon it a light rose coloured tint, which, at the time, we attributed to the colouring matter being pressed out of the birch of which they were made. To- day, however, we observed, that the runners of the boats, and even our own foot-steps, exhibited the same appearance ; and, on watching it more narrowly afterwards, we found the same effect to be produced, in a greater or less de- gree, by heavy pressure, on almost all the ice over which we passed, though a magnifjnng glass could detect nothing to give it this tinge. The colour of the red snow which we bottled, and which oftly occurred on two or three spots, appeared somewhat different from this, being rather of a salmon, than of a rose, colour, but both were so striking, as to be subject of common re- mark •." On Sunday, the 5th August, in Latitude 81° 54/ 47^ the air, in the shade, at noon was 35", and in the sun 42°. This day they rowed across a lake of fresh water on the ice. It was a quarter of a mile long, and varied in depth from two to four feet, which, together with an island situated in the middle of it, the rugged ice, by which it was bounded, and the beauti- ful blue of the water, gave it a singular and picturesque ap- pearance. On the 11th of August they observed such indica- tions of an open sea as could not be mistaken, much of the ice being " washed" as by a heavy sea, with small rounded fragments thrown on the surface, and a good deal of dirty ice occurring. *' We also," Captain PaiTy remarks, " met with several pieces of drift Avood and birch bark, the first time since we had entered the ice ; and the sea was crowded with shrimps and other sea insects, principally the Clio boreaUs and Argonauta arciica, on which numerous birds were feeding. After pass- ing through a good deal of loose ice, it became gradually more and more open, till at length, about a quarter before eleven a. m., we heard the first sound of the swell under the hollow margin of the ice, and, in a quarter of an " hour, had reached the open sea, which was dashing with heavy surges against the outer masses. We hauled the boats upon one of these to eat our last meal upon the ice, and to complete the necessary supply of water for our little voyage to Table Island, from which we were now distant fifty miles, our la- titude being 81° 34', and longitude 18i° E. A light air springing up from the north-west, we again launched the boats, and, at eight a. m. finally quitted the ice, after having taken up our abode upon it for forty-eight days |.'* On the 12th August they reached the island, or rather rock, to the northward of Table Island, where their provisions had * Narrative, p. 109. f Narrative, p. lia to reach the North Pole in 1827. 378 been deposited ; " and," says Captain Parry, " I cannot de- scribe the comfort we experienced in once more feeling a dry and solid footing."*^ Having got the stores into the boats, an attempt was made to land on Table Island, but without suc- cess; — they then bore away for Walden Island. The islet which lies off Little Table Island, and which is interesting, as being the most northern land known upon the globe. Captain Parry named Ross'*s Islet, in honour of Lieutenant Ross, a young officer, distinguished for his great activity, zeal, and in- telligence. In a few hours they reached Walden Island, and made good a landing. " Every thing," says the narrative, " belonging to us was now completely drenched by the spray and snow ; we had been fifty-six hours without rest, and forty-eight hours at work in the boats, so that by the time they were un- loaded, we had barely strength left to haul them up upon the rock. We no- ticed, on this occasion, that the men had that wildness in their looks which usually accompanies excessive fatigue, and, though just as willing as ever to obey orders, they seemed at times not to comprehend them. However, by dint of great exertion, we managed to get the boats above the surf; after which, a hot supper, a blazing fire of drift wood, and a few hours* quiet rest, quite restored us." The next morning a party, under Lieutenant Ross, was sent to the north-east part of the islet, to launch the spare boat left there by Captain Parry's orders, and to bring round the provi- sions deposited there. Every thing was found undisturbed. At 10 A. M., on the 14th August, they left Walden Island in three boats, and next morning landed on Low Island. On the 16tb the expedition set off for the Hecla, but were forced back to Low Island, and could not finally escape from it until the 21st. " Havmg now, by means of drift wood, converted our paddles into oan^ and being occasionally favoured by a light breeze, with a perfectly open sea, we made tolerable progress, and, at half-past 4 p. m., when within three or four miles of Hecla Cove, had the gratification of seeing a boat under sail, coming out to meet us. Mr Weir soon joined us in one of the cutters ; and, after having ^ood accounts of the safety of the ship, and of the wel&re of all on board, together with a variety of details, to us of no small interest, we ar- rived on board at 7 p. m., after an absence of sixty-one days, being received with that warm and cordial welcome which can alone be felt, and not describ- ed. The distance traversed during this excursion was 569 geographical miles, but allowing for the number of times we had to return for our baggage du- ring the greater part of the journey over the ice, we estimated oiur actual JANtJARY — MARCH 1828. sb S74 Narrative of Captain Parry's Attempt trAvdling at 9art, from an unusually wet season, preceded, perhaps, by a winter of less than ordinary severity. Of the latter we have no means, of judging, there being na record, that 1 am aware of, of the temperature of that or any other winter passed in the higher latitudes j but, on comparing our meteorological register with some others, kept during the corresponding season, and about the same latitude*, it does appear, that, though no material difference is observable in the mean temperature of the atmosphere, the quantity of rain which we experienced is considerably greater than usual ; and it is well known how very rapidly ice is dissolved by a fall of rain. At all events, from whatever cause it may have arisen, it is cer- tain, that, about the meridian on which we proceeded northward in the boats, the sea was in a totally different state from what Phipps experienced, as may * Particularly that of Mr Scoresby during the month of July, from. 1812 to 1818 inclxisive, and Captain Franklin's, for July and August 1818. to reach tlie North Pole in 1827. ST7 be seen from comparing our accounts, his ship being closely beset, near the Seven Islands, for several days about the beginning of August; whereas the Hecla, in the beginning of June, sailed about in the same neighbourhood without obstruction, and, before the close of July, not a piece of ice could be seen from Little Table Island. " I may add, in conclusion, that, before the middle of August, when we left the ice in our boats, a ship might have sailed to the latitude of 82^, almost without touching a piece of ice ; and it was the general opinion among us, that, by the end of that month, it would probably have been no very difficult mat- ter to reach the parallel of 83*, about the meridian of the Seven Islands. An appendix of eighty pages accompanies the narrative, con- taining, 1. Meteorological journals ; 2. Notice respecting chrono- meters ; 3. Observations on the dip of the magnetic needle ; 4. Observations on the variation of the magnetic needle made on shore, or on the ice, 1827 ; 5. Observations on the diurnal varia- tion of the horizontal magnetic needle at Spitzbergen 1827 ; 6. Observations on the diurnal changes of intensity in the horizon- tal magnetic needle at Spitzbergen 1827; 7. Temperature and specific gravity of sea water below the surface, 1827. To these follow observations on zoology by Captain Ross, on the plants collected during the expedition by Dr Hooker, and on the rocks and minerals by Professor Jameson. Having already greatly exceeded our limits, we must delay giving an account of the more scientific department of the work until a future opportunity. The plan of reaching the North Pole being for the present abandoned, we hope that Govern- ment will not allow the experience and skill acquired by Cap- tain Parry and his officers in the Arctic Regions to be lost It is therefore the duty, as it is, we trust, the intention of the Admi- ralty, speedily to call them again to similar enterprizes. The examination of the east coast of West or Old Greenland, of Spitzbergen, and the sea and fishing-ground to the eastward of that interesting island, are objects worthy the attention of the nation, and the accomplishment of which would shed a lustre on the name and elevated rank of the Lord High Admiral of England. 878 Prof. Carat's Ohsef\aiions on Uie Dhsectin/r and t> Ohservadions on the Dissecting and Preparing' of the Bodies of' Animals. By Professor Caiius *. A HOUGH die art of adatoniisittg the bodies of animals is essen- tially the same as that practised upon the body of man, and though want of space precludes me from treating the subject minutely, I conceive that a few remarks may not be altogether imacceptable to those who feel desirous of pursuing such studies for themselves. The first thing that I have to obsef ve is, tliat all dissections of small and soft objects, e. ^. worms, zoophytes, insects, mol- lusca, and embryos, where it is desirable to obtain even tolerably accurate results, should be performed under water^ by which the parts are kept floating and separated from each other, and, consequently, present themselves more distinctly. A very sim- ple contrivance for investigations of this kind may be prepared in die following manner : — A mass of tough wax (not too soft) is to be laid upon one, or more, porcelain saucers or capsules ci different sizes, which are then to be put in a warm place until the wax melts so as to cover the surface evenly to the depth of a half or one-third of an inch. If the object to be examined be laid upoii this surface, it may be fixed by needles in any po- sition diat is wished, and, when covered with clear water, de- tneloped and dissected by means of suitable instruments. Of them, the best are very delicate forceps ; pointed, well made, fiharp-cutting sctssars ; and «mali knives like cataract-needles, some round, others with cutting edges, and fixed in slender wooden handles. For separating parts I have also employed «mall horn probes and fine brushes ; whilst, for examining them, a good magnifying glass is frequently indispensable. If it is 'wished to preserve a preparation thus made, wax, coloured at pleasure as for the purpose of injections, is to be formed into little tablets about one-fourth of an inch thick : OQe of these is then to be placed upon the saucer or capsule containing the pre- paration ; the latter may then be transferred to it, arranged suit- ably upon it, fixed there by means of short needles, and both • From Introduction to Comparative Anatomj by Professor Carus, trans- lated by Gore, vol. ii. p. 389. Preparing of the Bodies ofAnimaU, 379 together then placed in alcohol. Nor must I forget to mention, that the examination of very delicate organizations may fre- quently be conducted with greater facility and accuracy, if the objoct be previously allowed to remain some time in ftpirit«, ajM) thereby to become harder and contracted. This applies parti* cularly to the dissection of nervous organs, and to the examioa* tion of very small embryos, of moUusca, and wonns. Tliere are various modes of destroying worms, insects, raoU hisca, &c. for the purpose of dissecting, without injiuring their organization : MoUusca, snails, for instance, as Swammerdam has remarked, are to be allowed to die in water, because by that means tlieu* body swells, and all the parts become more dis» tinctly visible ; they may afterwards be kept in spirit (though not too long) for dissection. Worms, the larger zoophytes, (for the smaller must be examined whilst alive), caterpillars, &a and also the smaller amphibia and fishes, are best destroyed by means of spirit : Insacts, on the contrary, by being dipped nu pidly in boiling water, or in oil of turpentine. As regards the dissection of larger animals, we may here use with advantage knives of a large size, and insteajd of forceps, suitable hodis with handles. In animals of considerable size we can generally make artlfi- ci^ skeletons only, after the bones have been sufficiently clean- ed by boiling or maceration. In smaller animals, on the ooa> trary, such as birds, amphibia, and fishes, of which last it is very difficult to make good skeletons, the object will be best ac- complished by at once making the bones as clean as possible, without injuring the capsular ligaments, soaking the preparation in water that is incessantly changed, and, lastly, bleaching it for some time in tlie sun. Lastly, we may mention injections as affording a very essen- tial assistance in zootomical investigations for physiological pur- poses : in small animals, and in the more minute parts, these must consist of compositions with wax, very fluid and coloured; but above all of mercury. The latter, however, is not suitable for very soft bodies, e. g. medusae, &c. in which cases we may employ injections of coloured milk, and similar substances. V- ( 380 ) On the Irritability of the Sensitive Plant. By M. Dutbochet. i-VA- DuTRocHET has collected, into a single volume, the long and important researches which he has made upon the moving powers which act in organised bodies. His experiments on the sensitive plant occupy an essential part of this work. A new procedure, which he has employed in vegetable anatomy, has led him to results which would tend to invalidate a celebrated the- ory. He asserts, that all the elementary organs of plants, that is to say, the cellules and tubes, of which their body is composed, have an independent existence, and form circumscribed organs ; so that these organs would only have, to each other, relations of vicinage, and would not form, by their assemblage, a really con- tinuous tissue. He affirms that there are neither pores nor fis- sures visible to the microscope in the cellular tissue, any more than in the fibres of vegetables. There are only seen on the walls of these organs, small semitransparent globular bodies, and linear bodies, which become opaque from the action of acids, and are rendered transparent by that of alkalies. M. Dutrochet con- siders these small bodies as the elements of a diffused nervous system. To the analogies of intimate structure and chemical nature, which he brings forward to support this opinion, the au- thor adds physiological considerations, taken from experiments, which are peculiar to himself, and which, in his opinion, prove that the motions of vegetables are spontaneous ; in other words, that they depend upon an internal principle, which immediately receives the influence of external agents. Refusing to admit sensibility in vegetables, M. Dutrochet substitutes for this term that of nervimotility. With regard to the organ of motion in the leaves of the sen- sitive plant, M. Dutrochet has proved, by decisive experiments, that it consists in a bulging of the parenchyma, or of the cortical medulla, which is situated at the base of the petiole, and at the base of each of the leaflets of 'which the leaf is composed. He has discovered, that this organ, to which he has given the name of bourrelet, is composed of globular cellules, disposed in longitu- dinal series, and filled with a coagulable fluid. It is not by means of joints that the sensitive plant, any more than the other irritable vegetables, moves its mobile parts ; but by means of a M. Dutrochet on the Irritabiltty of the Sensitive Plant. 381 curvature impressed on these parts in the place where the organ of motion occurs. Thus, in the sensitive plant, it is the bourre- lets alone, that, by curving, produce the folding of the leaves. M. Dutrochet has found, that this curvature is the result of a vital elastic power, which even manifests itself in the thin slices that are taken from these bourrelets. He has given the name of incurvatioft to this phenomenon. Thus the vegetable irritabi- lity consists only in an elastic incurvation, which i^ sometimes Jixed and sometimes oscillator^/. For example, this elastic in- curvation is JiiVed in the tendrils of vegetables, in the valves of the ovarium of the balsamine, &c. ; it is osciUaiory in the vege- tables that are named irritable, — vegetables which present, in their mobile parts, a state of alternating incurvation and straight- ening. It has long been known that the sensitive plant presents a phenomenon of sympathic transmission. If one of the leaflets of this plant be slightly burnt with a burning glass, all the leaf- lets belonging to the same stalk will fold themselves one after another. This motion deserves to be carefully examined ; and, in order to determine the part of the stalk by which the trans- mission in question is operated, M. Dutrochet made several very delicate experiments, from which there results, that it is neither produced by the pith nor the bark, but that it takes place ex- clusively by means of the woody part of the central system. Inquiring afterwards what, in this woody part, are the special organs of the transmission in question, he arrives at the conclu- sion of its being effected through the medium of the sap con- tained in the tubes, which he names corpuscidiferous. He has found, that the maximum of velocity of this motion of transmis- sion is fifteen millimetres per second in the petioles of the leaves, and only three millimetres per second in the body of the stalk. The state of the temperature does not appear to have any in- fluence upon its velocity. Light exercises a very remarkable influence upon the irrita- bility of the sensitive plant, the observation of which equally belongs to M. Dutrochet. If a sensitive plant be placed in complete darkness, by covering it with an opaque vessel, it will entirely lose its irritability, and that in a variable time, ac- cording to a certain state of depression or elevation of the sur- 382 M. Diitroehet en Ike Irritability of' the Sensitive Plant. iXHindiog temperature. Thus, at a temperature of from 20 to ^ degrees of Reauoiur, it requires only four days of darkness to destroy completely the irritability of a sensitive plant ; while fifteen days of darkness are required to produce the same effect when the surrounding temperature is within the limits of 10 and 15 degrees ; so that, on only taking the degrees of temperature in which tlie sensitive plant can Hve, it may be established that the extinction of the irritability of that plant in darkness is ope- rated in &. period, the duration of which is in the inverse ratio of the elevation of the temperature. M. Dutrochet has observed, that the sensitive plant, deprived of its irritability by means of darkness, recovers it by exposure to light ; and that this restoring of the conditions of irritabihty is more rapidly effected, by exposing the plant to the direct ligfat of the sun, than by exposing it merely to the light of day, such as it exists in the shade. From these observations, M. Dutrochet considers light as the external agent from the in- fluence of which vegetables draw the renewal of the conditions of their irritability, or, more generally, of their motility^ — con- ditions which are subject to deperdition in the natural state, and which thus require to be continuaJly repaired. Description of an Improved Air-Pump. By Mr John Dunn, Optician, Edinburgh *. With a Plate. JLn the course of my business, having often heard it regretted that the cost of apparatus prevented many gentlemen from en- gaging in philosophical pursuits, I have made it my study to simplify the construction of those which I have been employed to make, wlierever this could be done without impairing the accuracy of their performance. One of my first efforts was directed to that most valuable in- strument the air-pump, which I shall endeavour to shew I have improved &o very materially, as to be able to furnish one capa- ble of effecting as complete an exhaustion as the most perfect form of the instrument hitberto devised, and, at the same time, nearly as simple and as cheap as its most imperfect form. 1 " Read befpre the Society for the Encouragement of the Useful Arts, 19th December 1827- PLATE IV. £iiin^ Cnew JhU.JbiLr. Vil. JV:/,..%g2. inrsnlB ocfroveo uol pump. J^.2. T V5 Id ? ^J. %" L nv \M ~mi ^ir^ k. ■^ ^^A I v-^i A' ' p" ' T J V ir' ^ H ir fullisktd hyABUckEdi^JgiS. EiatclitU *cml»'. Mr Dunn's Description of an Improved Air-Puvip. SSd mentioned my views on the aul^ect to severtl gentlemen quaii- Ged to judge of their correctness^ and soon had an opportu« iiity of putting them to the test of experiment I received an order to make one for Mr Lees, lecturer on mechanical )>liik>so- phy in the School of Arts here, on condition that he was to be permitted to return it, if, on trial, it was not found capable of executing all tluit I had taught him to expect. This pump, through the kindness of Mr Lees, in whose poesesskm it has been for the last eighteen months, was exhibited to the Society iivc the Improvement of the Useful Arts, on 19th December 18^*. That the peculiarities of the construction of my pump may be more readily perceived, I shall first shortly describe the com- mon construction, and then its most perfect form, as improved by Cuthl>ertson. The common air-pump consists of two barrels A A', Fig. 1., Plate IV, in which the pistons PP' are fitted and moved by the racks RR^ and pinion O, the pistons being thus raised and depressed alternately by turning the \vinch W. In the bottans of tlie barrels there are openings, communicating with the re- ceiver or bell-glass ; over these openings valves of waxed silk or bladder are so placed as to admit of the passage of the air from the receiver through them, but to oppose its passage from the barrels to the receiver. It is obvious, that, on dravnng up cither of the pistons, a vacuum will be formed under it till the air from the receiver, by its elastic force, opening the valve V or V, distributes itself equally betwixt the barrel and receiver. Now, as the pistons are funushed with valves PP' of the same kind) and opening in the same direction as VV, on pushing either piston down, the air in the under part of the barrel lietng prevented by the valve at the bottxKU from returning to the re- ceiver, will open tlie piston- valve and esca]x; into the apartment, with the air of which the piston-i-alve oomnmnicates ; and these effects will fellow the raising and depressing of the pistons, at long as the air in the receiver has sufficient elasticity to open • 'Oie hi5trnment had been previously submitted to the examination of Dr Turner, one of the Secretaries of the Society «f Arts, wtw reported that be bsiA miuutely eKaoumxl it, and was perfectly astisfied with its perfonnaaoe. On his representation to the Council of the London University, I have since received an order to make xme fbr the chemical class of that institution. 384 Mr Dunn'*s Descriptimi of an Improved Air-Pump. the valves VV^ When it can no longer effect this, the exhaus- tion must cease, and,, consequently, a near approximation to a vacuum cannot be obtained by means of this construction. The best method hitherto proposed for effecting a more per- fect exhaustion, is that of Cuthbertson, which proceeds upon the principle of opening the valves independently of the elasti- city of the air ; and, accordingly, he substitutes in the place of the bladder-valves VV, Fig. 1., the metallic ones VV Fig. 2. *, having the wires WW^ attached to them, which slip stiffly in stuffing-boxes in the piston-rods. On raising either piston, the valve V or V is opened by the friction of its wire in the stuffing- box, and is shut by its depression ; in the former case leaving a free communication betwixt the part of the barrel under the pis- ton, and in the latter case cutting it off. In the pistons he also places metallic valves PP', to be opened by the descent of the piston-rod, and to be shut by its ascent, the valves in the pistons thus opening and continuing open, while those at the bottom of the barrels are shut, and vice versa. Now, as the piston-valves are opening while those at the bottom of the barrels are shut- ting, Cuthbertson found it necessary (though this is not required in the common pump) to exclude the external air from the barrels. For this purpose he put air-tight covers CC over the barrels, and made the piston-rods move in the air-tight stuffing boxes BB', and placed metallic valves MM' in the covers for the egress of the air, to be opened either by its elasticity or by the pistons striking against the projecting points pp of these valves. . It is also necessary to prevent the return of the air into the pump during the shutting of these valves, which is done by ha- ving them immersed in oil. This construction is certainly, in theory, as near perfection as we are likely to reach by any form of pump, but it is as certainly very complex, and, consequently, very expensive, and liable to go out of repair, — an objection of which those who have been engaged in making these pumps best know the force. Believing the only useful part of Cuthbertson's invention to be the contrivance for opening the valves at the bottoms of the bar- rels mechanically, I was of opinion a pump would perform near- " In figures 2d and 3d only one of the barrels are represented. Mr Dunn's Description of an Improved Air- Pump. 385 ly, or altogether as well, divested of all the other peculiarities of his instrument, and possessing the decided advantages of be- ing cheaper and much more easily kept in order. Fig. 3. is a section of the barrels of my pump, in which I em- ploy metallic valves vi/ ni the bottom of the barrels, and waxed silk ones S S' in the pistons, laying aside Cuthbertson's metal- lie valves in the pistons, removing all his apparatus from the top of the barrels, and leaving tlie pistons eacposed to the atmo^ sphere, as I consider all those contrivances to be unnecessary, aU though it has been uniformly held essential to a good air-pump, since the time of Smeaton's invention, that the pressure of the atmosphere should be taken off the piston-valves ; and my rea- son for doing so is, that the air will be always so compressed in the barrels, by the descent of the pistons, as of itself to have sufficient elastic force to open the silk valves in the pistons, the capacity of the barrels being each several thousand times greater than the space betwixt the two valves, when the piston is at the bottom. In fact, by making the under side of the piston and the bottom of the barrel fit each other, which, with the assist- ance of the oil employed in the barrels may be done perfectly, there will be no space left but the small hole in the piston to its valve. For illustration, let us suppose the stroke to be 12 inches, and the diameter of the barrels 2 J inches, or 25 tenths (as is the case in Mr Lees' one)^ the diameter of the hole e one-tenth of an inch, and its length 1 inch, their circles being to each other as the squares of their diameters, we have 1 x 1 = 1 for the capacity of the hole, and 25 x 25 x 12 = 7500 for the ca- pacity of the baiTels ; and consequently air, which, in the recei- ver was 7000 times rarer than the atmosphere, would have suf- ficient elastic force to open the valve in the piston ; but as this is a degree of rarefaction far beyond what has ever been attained, or even expected, it follows that any greater nicety of construc- tion here is unnecessary. The above plan may, however, be objected to, on account of its still leaving smnething to depend on the elastic force of the air which, should any one consider desirable to be removed, can be so done by adapting metallic valves I I^ with projecting points p' p\ to strike against the bottom of the barrels, having the spaces CK T^, O I, filled with oil, to exclude the external air SS6 Mr Dunnes Deffcripttmi of an Improved Air^Pump. durmg' their sliutting ; but even this small addition I consider wholly unnecessary. Fig. 4. is a perspective view of the one I made for Mr I.ees, which is the best method of fitting them up; but the principle is alike applicable to table air-pumps. Remarks upon the Wasting Effects of the Sea on the shore of Cheshire^ between the rivers Mersey and Dee *. By Robert Stevenson, Esq. Civil-Engineer, F. R. S. E., M. W. S., &c. Communicated by the Author. kJN a former occasion, I had the honour to make a few obseri ' vations, which appeared in the 2d volume of the Society's Me- moirs, regarding the encroachment of the sea upon the land ge- nerally. The present notice refers cmly to that portion of the coast which lies between the rivers Mersey and Dee, extending to about seven miles. To this quarter my attention, with that of Mr Nimmo, Civil Engineer, had been professionally directed in the course of last month. In our perambulatory survey we were accompanied by Sir John Tobin, and William Laird, Esq. of Liverpool, along the Cheshire shore, and its connecting sand banks, between Wallasea Pool, in the Mersey, and Dalpool, in the river Dee. Within these estuaries, the sliores may be de- scribed as abrupt, consisting of red clay and marl, containing many land or boulder stones, of the cubic contents of several tons, and very many of much smaller size, diminishing to coarse gravel. But the foreland, or northern shore, between these rivers, 'which I am now to notice, is chiefly low ground, and, to a great extent, is under the level of the highest tides. The beach, or ebb, extends from 300 to 400 yards seaward^ and, toward low-water-mark, exposes a section of red clay; * but, toward high water, it consists of bluish coloured marl, with peat or moss overlaid by sand. This beach, at about half-tide level, presents a curious and highly interesting spec- tacle of the remains of a submarine forest. The numerous roots of trees, which have not been washed away by the sea, or carried off by the neighbouring inhabitants for firewood, are in a very decayed state. The trees seem to have been cut off • Read before the Wernerian Society, 8th March 1828. Mr Stevenson on the Coast ofChtsltv'e, 387 about two feet from the ground after the usual practice in fell- ing timber, and the roots are seen ramifying from their respec- live stdmps, in all directions, and dipping towards tlie clay sub- soil. They seem to have varied in size from 18 inches to per- haps 30 inches in diameter, and, when cut with a knife, appear to be oak. Several of the boles or trunks have also been left upon the ground, and being partly immersed in the sand and clay, are now in such a decomposed state, that, when dug into with a common spade, great numbers of the shelUfish called Pholas Candida, measuring about three-fourths of an inch in length, and two inches in breadth, were found apparently in a healthy state. These proofs of the former state of this ebb or shore, now upwards of 20 feet under full tide, having been once^^dry land to a considerable extent beyond the region of these large forest trees, were rendered still more evident by the occurrence of large masses of greenstone, which, at a former pe- riod, had been imbedded in the firm ground here, and especially on the shore within the river Dee. It may farther deserve no- tice, that the inhabitants of this district have a traditional rhyme, expressive of the former wooded state of this coast, where not a tree is now to be seen, viz. " From Halbre Isle to Birkenhead a squirrel may hop from tree to tree ;'' , that is from the Dee to the Mersey, now presenting a submarine forest. As these evidences of great changes upon tlie state and for- mer appearances of the land were highly interesting to the par- ty, and intimately connected with the professional inquiries of myself and colleague, it seemed desirable to get them, if possible, corroborated by oral testimony. Sir John Tobin accordingly, very obligingly, took measures for examining the oldest people in the neighbourhood, as to their recollection of the former state of these shores. In particular, Thomas Barclay, aged 93 " all but two months," by profession a mason and measurer of coun* try work ; Henry Youd, labourer, aged 86 ; and John Crook- san, labourer, aged 80, were examined. Barclay stated, that he had been employed at the erection of the Leasowe land- ward Lighthouse in the year 1764 ; that there were then two lighthouses near the shore, for a leading direction to shipping tlirough the proper channel to Liverpool ; and that the Seaward Light became uninhabitable, from its bemg surrounded by the sea. A new light was then built upon Bidstone Hill ; and the S88 Mr Stevenson on the Wastiiig Effects of the Sea present Leasowe Lighthouse, formerly the landward light, which he had assisted in building, became the sea-light. He could not condescend upon the distance between the two original lights, but was certain that it must have been several hundred yards; that he knows that, in the course of thirty years, the shore of the Leasowe lost, hy measurement^ eleven Cheshire roods, or 88 yards; and verily believes, that, since he knew this shore, it has lost upwards of half-a-mile of firm ground. To the correctness of these statements, the other two aged men gave ample testi- mony ; Henry Youd having also worked at the Lighthouse. As to the present state of things, the party alluded to were eye witnesses of the tides, on the IBth, 17th and 18th of Feb- ruary 1828, having exhibited a very alarming example of the encroachments of the sea upon the Leasowe shore. At high- water it came over the bank, and ran in a stream of about half- a-mile in breadth, surrounded the lighthouse, and continued its course through the low grounds toward Wallasea Pool, on the Mersey, thereby forming a new channel, and threatening to lay several thousands of acres of rich arable and pasture lands into the state of a permanent salt lake. The present Leasowe Light- house, which, in 1764, was considered far above the reach of the sea, upon the 17th of February last was thus surrounded by salt water, and must soon be abandoned unless some very extensive works be undertaken for the defence of the beach, the whole of the interior lands of the Leasowe being considerably under the level of high-water of spring-tides. This coast, with its sand banks in the offing ; its submarine forest, and the evidence of living witnesses as to th^ encroach- ment of the sea upon the firm ground, is altogether highly in- teresting to the geological and scientific enquirer. The remains of forests in the bed of the ocean occur in several parts of the British coast ; particularly off Lincoln ; on the banks of the Tay, near Flisk ; at Skiel, in the Mainland of Orkney, and in other places, noticed in the Transactions of this Society, and are strong proofs of the encroachment of the sea upon the land. However difficult, therefore, it may be to reconcile the varied appearances in nature, regarding the sea having at one time oc- cupied a higher level than at present, yet its encroachment as a general, and almost universal principle, seems to be beyond on tlie Coast qfCfieshire. 389 doubt in the present day. Since I had last the honour of ad- dressing the Society on this subject, opportunities have been af- forded me of making many additional observations on the Bri- tish shores; and of personally extending these to almost every port on the Continent, between the Texel and the Garonne. I have also, through the obliging communications of friends, been enabled to extend my inquiries to other quartere of the globe ; and I am now prepared to state, that, with a few comparatively trifling exceptions, the sea appears to be universally gaining upon the land, tending to confirm the theory. That debris, arising from the general degradation of the land, being depo- rted in the bed of the minor seas, is the cause of their present tendency to overflow their banks. Description of several New or Rare Plants which have flowered in the Royal Botanic Garden, Edinburgh, during tlie last three months. By Dr Graham. 10/^ March 1828. iEginetia capitata. M. capitata ; herba pilosa, caule radicanti ; floribus capitatis. Description — Stem herbaceous, jointed, rooting, ascending, cylindrical, branched, purple. Leaves opposite, petioled, ovate (1^ inch long, above 1 inch broad), spreading, slightly decurrent along the petiole, veined, veins curved forwards *, petiole more than half the length of the leafl Peduncle axillary, (3 inches) long, sometimes exceeding, sometimes shorter than the leaf, round, tapering a little, spreading. SHpnia fili- form, opposite, alternate with the leaves (i an inch long). Capitulum ebracteate, about 12.flowered, few flowers expanded at a time. Pedicels very short. Calt/x adhering to the sides of the germen, extended into four oblongo-spathulate, distant, suberect, persistmg segments, equal in length to tne tube of the corolla. Corolla funnel-shapec^ 4-clefl, slightly pubescent without, and pubescence somewhat reflected, tube cylindrical, throat dilated, lined with close yellow pubescence just above the tube ; limb while in bud green, afterwards lilac, white towards the throat, seg- ments obovato-elliptical, spreading, revolute, and smooth above. S'to- mens 4, filaments aahering along the inside of the tube of the corolla, free only for a portion at the top about the length of the anthers, to the back of which they are attached ; anthers oblong, sometimes nestling among the yellow hairs in the throat of the corolla, in other instances carried up as high as the divisions of the limb, but the length of the free portion of the maments does not vary ; pollen globular, white. Pistil single ; stig- ma large, pubescent, white, cleft, segments revolute ; style single, fili- form, projecting beyond the anthers, but shorter than the limb of the corolla, white ; germen inferior, obovate, slightly flattened, bilocular, ovula numerous. The stem, branches, leaves, stipulse, petioles, peduncles, and outside of the calyx segments are very hairy, inside of tnese last less so ; hairs long, spreading, somewhat harsh, very slightly glutinous, at least on the parts of the flower. JANUABY— MARCH 18^8. C C 390 Dr Graham's Description of New or Rare Plants, This plant was raised last year from seeds received in 1826 by Captain Graham of his Majesty's Packet Service from Mr Harris at Rio de Ja- neiro. It has been kept in the stove, and has flowered in February and March. I cannot but doubt the propriety of uniting, under one generic name, plants so very different from each other as jEginetia l; our specimen about seven feet high, with brown bark, green on the young shoots, annular, a slight linear furrow passing quite round the stem from the base of each leaf; and being distinct years after the leaf has fallen. Leaves scattered, petioled, crowded at the extremities of the branches, ob- ovato-oblong, acuminate, thick, hard, smooth, shining, undulated (6 inches long), middle rib strong, and with the oblique veins prominent behind, veins united by conspicuous arches near the margin, and by transverse less distinct reticulations ; margin quite entire. Male spadiw stipitate, naked, but inclosed, previous to evolution, within the same pointed, smooth, deciduous stipulae as the terminal bud, club-shaped, round, above two inches long by three-fourths of an inch broad, projected near- ly in a straight line from the extremity of the footstalk, covered with innumerable flowers, dull green, its substance soft and spongy, the foot- stalk passing through its axis, but lost about the middle in the spongy structure around. Peduncle about half the length of the spadix>, axil- lary, spreading, stout, green and shining, the leaf from the axil of which it springs deciduous. Flowers monandrous, very small, green. Perianth sessile, club-shaped, slightly compressed, somewhat succulent, 2-cleft, gaping slightly, segments blunt. Corolla awanting. Filament arising from the Iwttom of the perianth, and exserted. Anther erect, bilobular, short, yellow. A plant is known in collections under the name of Artocarpus integrifolia, with rough leaves occasionally lobed ; but in ours the leaves are all en- tire, and smooth on both sides. It was received from Kew in 1814, and in January and March this season has for the first time produced seve- ral male spadices, but none with female flowers. Dodonaea atteniiata. Cunningham, in Field's Account of N. S. Wales, p. 353. D. aitenuata ; foliis lanceolato-spathulatis, apice mucronulatis basi atte- nuatis, rigidis, verrucosis, denticulatis ; floribus dioicis, racemosis, axil- laribus terrainalibusque, calycibus reflexis, pubescentibus, sub-viscidis. Description — Shrub erect, stem round; bark brown and cracked; branches scattered, slightly compressed, twiggy. Leaves scattered, sessile,'(34 inches long, i of an inch broad,) spreadmg, lanceolato-spathulate, with a small ■ mucro at the apex not always distinct, much attenuated at the base, ' rigid, rough, with warty elevations on the upper side, middle rib strong, and projecting both above and below, veins few and obscure, margins slightly reflected, toothed. Racemes terminal or axillary, rarely compound, bracteate, rachis, pedicels, and calyx, slightly hairy and viscid. BractecB subulate, solitary at the base of each pedicel, and shorter than this. Male flowers nodding. Calyx segments acute, reflected, concave, light green, falling along with the other parts of the flower by a division of the top Dr Graham''s Description of New or Hare Plants. 391 of the pedicel. Stamens 8 ; fikinents very short < anthers large, bilobular, and each lobe deeply grooved, bursling along the sides, arranged in a square form around the centre of the flower, yellow ; pollen abundant, yellow. Pistil abortive. Female flowers nodding. Calyx segments closely reflected, straight or bent back at the tij)S, narrower than in the male. Pistil single ; stigma 3-clell, twisted ; style straight, channelled, twisted, somewhat contracted near the germen, warted, very long (half an inch) ; germen superior, and left quite exposed by the reflected calyx, trigonous, dark green, warted, surrounded by very short abortive filaments. Seeds of this plant were, in 1824, received from Mr Fraser, Colonial Bota- nist, New South "Wales, who, in communicating a dried specimen, stated it to be " a tall shrub, native of the interior." In this specimen, the leaves are longer and more linear than in the plant described; but there seems reason to think that the leaves vary somewhat in shape, for in another seedling raised from the same package, the lower leaves are much shorter, broadly spathulate, and somewhat lobed, while the upper are long and linear, nearly resembling the native specimen. Both male and female have flowered freely ia the greenhouse in the end of Febru- ary and beginning of March. I should have described our plant with a mark of doubt as D. angustissima, Becand. had not my excellent friend Dr Hooker, whom nothing escapes, called my attention to the single species described in the work above quoted. Heteropteris fulffens. m.fulgens ; foHis ellipticis, mucronulatis, subtus sericeo-ferrugineis, se- rie glandularum versus margines notatis, superne pilis deciduis ferru- gineis tectis, petiolis medio bi-glandulosis; ramulis verrucosis cumque petiolis adpresse ferrugineo-pubescentibus ; paniculis terminalibus. Deschiption — Shrub scandent ; bark light grey. Branches warted, com- pressed, young shoots pubescent. Leaves opposite, on short petioles, el- liptical, (4-5 inches long), subcoriaceous, and somewhat undulated, mu- cronulate, veined ; above full green, with a deciduous adpressed pubes- cence ; below a permanent adpressed silky pubescence, mixed with a few coarser and more straggling hairs, and a loose row of small glands along each margin. Petioles with two green glands, generally about the midtlle, but varying both in number and position, yet never awanting in our large plant ; when young always yielding a globule of viscid honey, but often withering early, and then appearing abortive. Panicle large, long, terminal, bracteate, branches decussating, spreading, two or three rising wi