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PRESENTS RECEIVED BY THE ROYAL SOCIETY, From November 1816 to July 1817. WITH THE NAMES OF THE DONORS. 1816. PRESENTS. Nov. 7. Transactions of the Geological Society. Vol. III. London, 1816. Abhandlungen der Königlichen Akademie der Wissenschaften aus den Jahr 1804—1811. Berlin, 1815. On the Lines that divide each semidiurnal Arc into 6 equal Parts, by W. A. Cadell, Esq. F. R. S. London and Edin. Edinburgh, 1816. An Inquiry into the Causes of the Motion of the Blood, by James Carson, M. D. Liverpool, 1815. A Treatise on the Coal Mines of Durham and Northumberland, by J. H. H. Holmes, Esq. F. S. A. London, 1816. Transactions of the Society for the Encouragement of Arts, Manufactures, and Commerce. Vol. XXXIII. London, 1815. Medico-Chirurgical Transactions. Vol. VII. pt. I. London, 1816. Précis élémentaire de Physiologie, par F. Magendie. Tom. I. Paris, 1816. Mémoire sur la Déglutition de l’Air atmosphérique, par M. Magendie. Mémoire sur l’Œsophage, par M. Magendie. Essai sur les Probabilités, par M. le Comte Laplace. Paris, 1816. Memoir on the cutting Gorget of Hawkins. Translated from the Italian of Ant. Scarpa, by James Briggs, Esq. London, 1816. DONORS. The Geological Society. The Royal Academy of Sciences at Berlin. W. A. Cadell, Esq. Dr. James Carson. J. H. H. Holmes, Esq. The Society of Arts, Manufactures and Commerce. The Medical and Chirurgical Society of London. M. Magendie. Le Comte Laplace. James Briggs, Esq. 1816. **PRESENTS.** Nov. 7. Journal des Mines, No. 227 and 228. Journal of Science and Arts. No. 3. The Colonial Journal. No. 2. The Monthly Review from July to October, and Appendix to Vol. LXXX. The European Magazine, from July to October. The Philosophical Magazine. No. 219—222. Annals of Philosophy. No. 44—47. Mémoire sur la Diffraction de la Lumière, par M. Fresnel. Supplement à la Théorie analytique des Probabilités, par Laplace. Mémoire sur les Plantes auxquelles on attribue un Placenta central libre, et sur la nouvelle Famille des Paronychées, par August de Saint Hilaire. Paris, 1816. Flora Tonbridgensis, by T. F. Forster, Esq. London, 1816. Two gold Coins, viz. Lions of King James I. & King James II. of Scotland, found in the Ruins of the Castle of Cadder. Astronomische Beobachtungen auf der Königlichen Universitäts Sternwart in Königsberg, von F. W. Bessel, Erste Abtheilung. Königsburg, 1815. fol. Untersuchung der Gross und des Einflusses des Vor- ruckens der Nachtgleichen, von F. W. Bessel. Berlin, 1815. Nov. 14. Bibliotheca Collegii Regalis Medicorum Londinensis Catalogus, 1757. A Treatise on the Nature and Cure of Gout, by Charles Scudamore, M. D. London, 1816. Dec. 5. Des Vesaries, ou Maladies mentales, par J. R. Jacquelain Dubuisson. Paris, 1816. Notice sur les grandes Tables logarithmiques et trigonometriques calculées au Bureau du Cadastre sous la Direction du Cit. Prony. Paris, An 9. Eclaircissemens sur un Point de l'Histoire des Tables trigonometriques par M. Prony. Paris, An 12. Compendium Florae Britannicae Auctore Jac. Edv. Smith, Eq. Aur. M. D. Londini, 1816. The Philosophical Magazine for November. The Monthly Review for November. The European Magazine for November. Annals of Philosophy, No. 48. Trattato dello Ariete idraulico del Caval. Brunacci. Milano, 1813. Metereologisches Jahrbuch von 1813, von Canonicus Augustin Stark. Augsburg, 1814. Beschreibung der meteorologischen Instruments, &c. von Canonicus A. Stark. Augsburg, 1815. **DONORS.** Conseil des Mines. The Managers of the Royal Institution. The Editors. Mr. G. E. Griffith. The Editor. Mr. Alex. Tilloch. Dr. Thomas Thomson. M. Fresnel. M. le Comte Laplace. M. de St. Hilaire. Thomas Forster, Esq. The Barons of His Majesty's Exchequer in Scotland. Professor Bessel. The Royal College of Physicians. Dr. Charles Scudamore. M. Dubuisson. M. Prony. Sir J. E. Smith. Mr. A. Tilloch. Mr. G. E. Griffith. The Editor. Dr. Thomas Thomson. The Chevalier Brunacci. C. A. Stark. 1816. Dec. 19. Essai sur l'Hygiène militaire des Antilles, par A. Moreau de Jonnes. Paris, 1816. 12° Précis historique sur l'Irruption de la Fièvre jaune à la Martinique en 1802. 12° Observations sur les Géophages des Antilles. 12° Recherches expérimentales anatomiques, chimiques, &c. par M. J. A. Saissy. Paris et Lyon, 1808. 12° Analysis of the Water from the ebbing and flowing Stream, discovered by boring in the Harbour of Bridlington, A.D. 1811, by Mr. Hume. London, 1816. Expériences sur la Flexibilité, la Force, et l'Elasticité des Bois, par Ch. Dupin. 4° Nova Acta Regiæ Societatis Scientiarum Upsaliensis, Vol. VII. Upsal, 1815. 4° A Charge delivered to the Clergy of the Diocese of Carlisle, by Samuel, Lord Bishop of that Diocese, in June, 1816. London. Transactions of the Geological Society. Vol. IV. pt. I. London, 1816. 4° Jan. 9. Preservativi politici per tener lontana la Peste. Lettera di Fran. Gianpetri all' Eccel Duca d'Acroli. Napoli, 1816. 4° Collezioni di Trattati appartenenti all' Invenzione geometrica, di V. Flauti. Napoli, 1815. 8° A Journal of Science and Arts. No. 4. The Monthly Review for December, 1816. Annals of Philosophy, No. 49. The Philosophical Magazine, No. 224. The European Magazine for December. The Nautical Almanack for 1817 and 1818. 8° 16. Laurus Victoriæ et Oliva Pacis, decem Odis, a Joanne W. Remo. Leodii, 1815. 4° A Meteorological Table extracted from the Register kept at Kinfauns Castle, N.B. Jan. 23. Nos. 9, 10, 11, 12, and 13 of the Addenda et Corrigenda to the Edition of the Hippolytus Stephane-phoros of Euripedes, by the Hon. F. H. Egerton, &c. &c. &c. printed in 4° at the Clarendon Press, Oxford, 1796. Feb. 6. The European Magazine for January. The Monthly Review for January and Appendix to Vol. LXXXI. The Philosophical Magazine, No. 225. Annals of Philosophy, No. 50. Lilawati, or a Treatise on Arithmetic and Geometry, by Bhascara Acharya, translated from the original Sanscrit, by John Taylor, M.D. &c. Bombay, 1816. 4° DONORS. M. A. Moreau de Jonnes. M. J. A. Saissy. Joseph Jekyll, Esq. M. C. Dupin. The Royal Society of Sciences at Upsal. The Lord Bishop of Carlisle. The Geological Society. Sig. F. Gianpetri. Sig. Flauti. The Managers of the Royal Institution. Mr. G. E. Griffith. Dr. T. Thomson. Mr. A. Tilloch. The Editor. The Board of Longitude Mr. J. W. Remus. Lord Gray. The Hon. Francis Henry Egerton. The Editor. Mr. G. E. Griffith. Mr. Tilloch. Dr. Thomson. Dr. John Taylor. 1817. Feb. 12. Recherche du Plan osculateur et du Centre de Courbure d'une Ligne courbe en un Point donnée 4° Mémoire sur la Théorie générale du Trace des Routes, par M. C. Dupin. 4° 13. Recherches et Observations sur la Nevralgie faciale, par M. Meglin. Strasbourg, 1819. 8° Astronomisches Jahrbuch für das Jahr 1818, von J. E. Bode, &c., &c. Berlin, 1815. 8° 20. A Table exhibiting the Oscillations of the Barometer, the Maximum and Minimum of the Thermometer, the Depth of the Rain, and the Course of the Wind, at Kinfauns Castle, North Britain. 27. The modern Practice of Physic, exhibiting the Characters, Causes, Symptoms, Prognostics, morbid Appearances, and improved Method of treating the Diseases of all Climates, by Robert Thomas, M.D.; with an Appendix by David Hosack, M.D. F. R. S. New York, 1817. 8° Mar. 6. Mémoires de la Classe des Sciences mathématiques et physiques de l'Institut de France, Année 1812, 2de Partie. Paris, 1816. 4° Annals of Philosophy, No. 51. The Philosophical Magazine, No. 226. The Monthly Review for February. The European Magazine for February. 13. A View of the Agricultural, Commercial, and Financial Interests of Ceylon; with an Appendix containing some of the principal Laws and Usages of the Candians, by Anthony Bertolacci, Esq. London, 1817. 8° Testamen Nosologicum, by Whitelock Nichol, M.D. From the London Medical Repository. Vol.VII. Outlines of Geology; being the Substance of a Course of Lectures delivered in the Theatre of the Royal Institution, by W. Thomas Brande. London, 1817. 8° 20. Examinations of the Objections made in Britain against the Doctrines of Gall and Spurzheim, by J. G. Spurzheim, M.D. Edinburgh, 1817. 27. Mémoires de la Société Impériale des Naturalistes de Moscow, Tomes I.—IV. Moscow, 1811-1813. 8° Synopsis Praxis Medico-Obstetriciae quam Mosquæ exercuit Guil. M. Richter. Mosquæ, 1810. 4° Oratio pro Munere Presidis adeundo in Conventu publico Societatis Physico-Medicae apud Universitatem Caesaream Mosquensem, institutæ die 3 Decem. An. 1810. habita a Guil. M. Richter. Moscow, 1810. 12° Commentationes Societatis Physico-Medicae apud Universitatem Literarum Caesaream Mosquensem institutæ. Vol. I. Pars 1. Donors: Mr. Charles Dupin. M. Meglin. Professor Bode. Lord Gray. Dr. David Hosack. The Institute of France Dr. T. Thomson. Mr. A. Tilloch. Mr. G. E. Griffith. The Editor. A. Bertolacci, Esq. Dr. Whitelock Nichol. Mr. W. T. Brande. Dr. J. G. Spurzheim. The Imperial Society of Naturalists at Moscow. Guil. Mich. Richter. 1817. PRESENTS. Commentationes ad Historiam et Philosophiam naturalem spectantes. Moscow, 1808. 4° Zoognosia Tabulis synopticis illustrata in Usum Praelectionum Academiae Imperialis Medico-Chirurgicae Mosquensis edita, Auctore Gotthelf Fischer. Vol. I. Moscow, 1813. 4° Programme d'Invitation à la Séance publique de la Société Impériale des Naturalistes, contenant la Notice d'un Animal fossile de Sibérie inconnu aux, par G. Fischer. Moscow, 1808. 4° Notice des Fossiles du Gouvernement de Moscow, servant de Programme pour inviter les Membres de la Société Impériale des Naturalistes à la Séance publique du 25 Octobre, par le Professeur G. Fischer. Moscow, 1810. 4° Mémoire sur la Sodalite du Vésuve, par M. Le Comte Stanislas D. Borkowski, Apr. 17. De Latitudine Specula Manhemensis, Auctore H. J. Schumacher. Hauniæ, 1816. 4° A Journal of Science and the Arts, No. 5. The Monthly Review for March. The Philosophical Magazine, No. 227. Annals of Philosophy, No. 52. The European Magazine, for March. Extracts relating to some new mechanical Inventions, by Baron von Drais, MS. An Inquiry into several Questions of Political Economy applicable to the present State of Great Britain. London, 1817. May 1. An Essay on the Principles and Construction of Military Bridges and the Passage of Rivers in Military Operations, by Col. Sir H. Douglas, Bart., F. R. S. &c. London, 1816. 8° The Monthly Review for April. Annals of Philosophy, No. 53. The Philosophical Magazine, No. 228. The European Magazine for April. Transactions of the Horticultural Society, Vol. II. pt. 5. London, 1817. 4° Algebra, with Arithmetic and Mensuration, from the Sanscrit of Brahmegupta, and Bhascara, translated by Henry T. Colebrooke, Esq. F. R. S. &c. London, 1817. 4° Storia naturale e generale dell' Etna, del Canonico Giuseppe Recupero. Catania, 1815. 2 Vols. 4° Il Mappamondo di Fra Mauro Camaldolese, descritto ed illustrato da D. Placido Zurla. Venezia, 1806. fol. A Treatise explanatory of a new System of Naval, Military, and Political Telegraphic Communication, by John Macdonald, Esq. F. R. S. &c. London, 1817. 8° DONORS. Gul. Mich. Richter. Prof. G. D. Fischer. Le Comte Borkowski. Professor H. Schumacher. The Managers of the Royal Institution. Mr. G. E. Griffiths. Mr. A. Tilloch. Dr. Thomas Thomson. The Editor. The Baron von Drais. Mr. Bertolacci, the Author. Colonel Sir Howard Douglas. Mr. G. E. Griffiths. Dr. Thomas Thomson. Mr. Alexander Tilloch. The Editor. Horticultural Society of London. H. T. Colebrooke, Esq. Agatino Recupero. D. Placido Zurla. Col. John Macdonald. May 15. Fu il Fuoco o l'Acqua che sottere Pompei ed Er- colano, di C. Lippi. Napoli, 1816. Principi pratici di Meccanica applicati all' Utilita publici, di C. Lippi. Napoli, 1811. Corso di Scienze, Napoli, 1817. Sulla Necessità d'una ragionata Organizzazione degli Affari facoltativi o scientifici nel Regno di Napoli, di C. Lippi. Fol. 5 copies. Exposizione de' Fatti che han avuto luogo nell' Aca- demia di Scienzi di Napoli relativamente alla Sco- perta geologico-istorica, di C. Lippi. Fol. 5 copies. Rapport fait à l'Institut, par M. de Prony, sur un Mémoire descriptif de plusieurs Machines, à l'Usage de la Marine, construites à Rochefort d'après les Projets de M. Hubert, par M. C. Dupin. The Statutes of the Realm, printed by Command of His Majesty King George the Third, in pursuance of an Address of the House of Commons of Great Britain, from original Records and authentic Ma- nuscripts. Vol. II. and III. 1816 and 1817. fol. Foedera, Conventiones, Letteræ et cujuscunque gene- ris Acta publica inter Reges Angliæ et alios quosvis Imperatores, Reges, Pontifices Principes, vel Com- munitates ab ingressu Gulielmi I. in Angliam, A. D. 1066, ad nostra usque tempora habita aut tractata. Vol. I. Pars. I. et II. Ab anno 1066 ad annum 1307. 1817. fol. Abbreviationis Inquisitionum Retornatarum Supple- menta, &c. 1816. fol. Inquisitionum ad Capellam Domini Regis Retorna- tarum quæ in publicis Archivis Scotiæ adhuc servantur Abbreviatio. Vol. III. Printed by Command of His Majesty, King George the Third, in pursuance of an Address of the House of Commons of Great Britain, 1816. fol. Libri Censualis vocati Domesday Book Additamenta ex Codic. Antiquiss. 1816. fol. Libri Censualis vocati Domesday Book Indices. 1816. fol. June 5. Annals of Philosophy, No. 54. The European Magazine for May. The Philosophical Magazine, No. 229. The Monthly Review for May, and Appendix to Vol. LXXXII. Astronomical Observations made at the Radcliffe Ob- servatory, from May 1, 1816, to May 1, 1817, by the Rev. Abram Robertson, D. D. F. R. S. Savi- lian Professor of Astronomy at Oxford. MS. fol. Dr. Thomas Thomson. The Editor. Mr. A. Tilloch. Mr. G. E. Griffiths. Dr. Robertson, by Di- rection of the Trustees of Dr. Radcliffe's will, June 19. Hygiène militaire, ou Avis sur les Moyens de conserver la Santé des Troupes, par le Docteur J. R. Louis Kerckhoffs. Maastricht, 1815. Dissertation sur l’Air atmosphérique et son Influence sur l’Economie animale, par le Dr. J. Rom. L. Kerckhoffs. Maastricht, 1816. Traité de Mécanique céleste, par P. S. Laplace. Tome Troisième. Paris, 1802. Anatomie der Roehren Holothurie des Pomeranz farbigen Seesterns und Stein Seeigels verfasst von Dr. Friedrich Tiedman, nebst zehn kupfer Tafeln nach der Natur gezeichnet, von Dr. Martin Munz. Landshut, 1816. Calendarium Anni 1411, ex Laminis ligneis perantiquis in Bibliotheca sua asservatis Arte lithographiae anno 1796, ab Aloisio inventae Descriptum edidit Car Erenbert L. B. De Moll. On the Accidents which occur in the Coal Mines of Cornwall, in Consequence of the premature Explosion of Gunpowder in blasting Rocks, and on the Methods to be adopted for preventing it, by a safety Bar, and an Instrument termed the shifting Cartridge, by John Ayrton Paris, M. D. Penzance. July 3. Transactions of the Society for the Encouragement of Arts, Manufactures, and Commerce. Vol. XXXIV. 1817. An Address delivered at the Annual Distribution of Rewards, May 27, 1817. A Journal of Science and the Arts, No. 6. Annals of Philosophy, No. 55. The Philosophical Magazine, No. 230. The European Magazine for June. The Monthly Review for June. The History of Java, by Thomas Stamford Raffles, Esq. London, 1817. 2 vols. Essai philosophique sur les Probabilités, par M. Le Comte Laplace, 3me édition. Paris, 1816. Dr. Kerckhoffs. The Count Laplace. Baron von Moll. Dr. John A. Paris. The Society of Arts. The Managers of the Royal Institution. Dr. Thomas Thomson. Mr. Alexander Tilloch. The Editor. Mr. G. E. Griffiths. Sir Thomas S. Raffles, Knt. The Count Laplace. INDEX TO THE PHILOSOPHICAL TRANSACTIONS FOR THE YEAR 1817. A Amphibia, the circulation of the blood in this class described, 5 Argonauta, notice taken of an error into which many naturalists have fallen, respecting the inhabitant of this shell, 297 Astringent vegetable substance, observations on one from China, 39 B Babbage, Charles, Esq. Observations on the analogy which subsists between the calculus of functions and other branches of analysis, 197 Barometer, a description of a thermometrical one for measuring altitudes, 183 Binomial theorem, note respecting the demonstration of it, inserted in the last volume of the Philosophical Transactions, 245 Brande, William Thomas, Esq, Observations on an astringent vegetable substance from China, 39 C Calculus of Functions, observations on the analogy which subsists between that and other branches of analysis, 197 a curious analogy which subsists between i and common algebra, 205 Celestial bodies, astronomical observations and experiments INDEX. tending to investigate their local arrangement in space, and to determine the extent and condition of the milky way, Chank, the mode in which the animal belonging to this shell sheds its eggs, Colchicum autumnale, farther observations on the use of it in gout, Corpus luteum, notice taken of an error into which physiologists have fallen respecting it, D DAVY, EDMUND, Esq. On a new fulminating platinum, DAVY, SIR HUMPHRY, LL.D. Some researches on flame, Some new experiments and observations on the combustion of gaseous mixtures, with an account of a method of preserving a continued light in mixtures of inflammable gases and air without flame, DAVY, JOHN, M,D. Observations on the temperature of the ocean and atmosphere, and on the density of sea-water, made during a voyage to Ceylon, Differences, two general propositions in the method of them DUPIN, CHARLES, (correspondant de l'Institut de France) de la structure des vaisseaux Anglais, considérée dans ses derniers perfectionnements, E Equations, differential, in what the most extensive methods of integrating them, consists, Equation, functional, admits of three species of solutions, F Fishes, the circulation of their blood described, Fixed stars, on their parallax, Flame, some researches on it, G Galvanism, its effects in restoring the due action of the lungs, employed with success in many cases of habitual asthma, Gaseous mixtures, some new experiments and observations on their combustion, with an account of a method of preserving a continued light in mixtures of inflammable gases and air without flame, INDEX Gases, on the effects of the mixture of different gases in explosion and combustion, 58 Gastric glands, notice taken of a peculiar structure in those of the Java swallow, 335 observations on those of the human stomach, and the contraction which takes place in that viscus, 347 Glossopora, a name given to a new genus of animals hitherto retained in the genus hirudo, 339 character of this genus, 340 Gout, farther observations on the use of the colchicum autumnale in that complaint, 262 H Hatchett, Charles, Esq. A description of a process by which corn tainted with Must, may be completely purified, 36 Helix janthina, deposits its ova upon its own shell, 299 Herschel, Sir William, Knt. Guelp. Astronomical observations and experiments tending to investigate the local arrangement of the celestial bodies in space, and to determine the extent and condition of the milky way, 302 Hirudo complanata, and hirudo stagnalis, observations on those animals, now formed into a distinct genus under the name Glossopora, 339 vulgaris, observations on it, 13 their mode of propagation, 14 Home, Sir Everard, Bart. An account of the circulation of the blood in the class Vermes of Linnæus, and the principle explained in which it differs from that in the higher classes, 1 An account of some fossil remains of the rhinoceros, discovered by Mr. Whitby, in a cavern enclosed in the limestone rock from which he is forming the Breakwater at Plymouth, 176 on the passage of the ovum from the ovarium to the uterus in women, 254 farther observations on the use of the colchicum autumnale in gout, 262 The distinguishing characters between the ova of the sepia and those of the vermes stacea that live in water, explained, 297 Some account of the nests of INDEX. the Java swallow, and of the glands that secrete the mucus of which they are composed, 332 Observations on the gastric glands of the human stomach, and the contraction which takes place in that viscus, 347 I. Java swallow, some account of the nests of that bird, and of the glands that secrete the mucus of which they are composed, 332 the nests of this bird believed by the Chinese to possess an aphrodisiac virtue, 332 an analysis of the substance of which the nests of this bird are formed, 336 a peculiarity in the structure of the gastric glands of this bird, 335 Johnson, James Rawlins, M.D. Observations on the hirudo vulgaris, 13 Observations on the hirudo complanata and hirudo stagnalis, now formed into a distinct genus, under the name Glossopora, 359 K Knight, Thomas, Esq. Of the construction of logarithmic tables, 217 Two general propositions in the method of differences, 234 Note respecting the demonstration of the binomial theorem inserted in the last volume of the Philosophical Transactions, 245 Knight, Thomas Andrew, Esq. Upon the extent of the expansion and contraction of timber in different directions relative to the position of the medulla of the tree, 269 L Leach, William Elford, M.D. Observations on the genus ocythoë of Rafinesque, with a description of a new species, 293 Logarithmic tables, of the construction of them, 217 INDEX. *Lumbricus marinus*, a description of the circulation of the blood in that animal, *terrestris*, the circulation of the blood in this animal described, M *Mailles*, de leur remplissage, *Mammalia*, the double circulation of the blood in this class described, *Menstruation*, a case adduced to prove that it is not necessary to impregnation, *Milky way*, of its construction and extent, *Muller*, his description of a contest between an hirudo and a limax, *Must*, a description of a process by which corn tainted with it, may be completely purified, O *Ocean and atmosphere*, observations on their temperature, and on the density of sea-water, made during a voyage to Ceylon, *Ocythoe of Rafinesque*, observations on that genus, with a description of a new species, *Cranchii*, a description of it given, — considered as a species of sepia, and not the original inhabitant of the argonaut shell, —in what respect it differs generically from the polypus, *Oong poey*, a description of a species of galls so called, used by the Chinese in dying black, — found to contain a greater quantity of tannin than any other vegetable astringent in common use, — unfit for the purposes of tanning, from the want of extractive matter, *Ovum*, on its passage from the ovarium to the uterus in women, — from the human ovarium, description of it under a microscope, P *Philip, A. P. Wilson, M. D.* On the effects of galvanism in restoring the due action of the lungs, MDCCCXVII. INDEX. Platinum, on a new fulminating compound of it, - 136 Platinum, fulminating, modes of obtaining it, - 138 its properties, - 139 its composition, - 146 theory of its formation and decomposition, - 155 Pond, John, Esq. On the parallax of the fixed stars, - 158 an appendix to his Paper on parallax, - 173 on the parallax of the fixed stars. - 353 Porques ordinaires, leur remplacement par des porques obliques, - 102 Presentis, a list of those made to the Royal Society from November 1816, to July 1817, - 363 Profundity, or local situation of celestial objects in space, of a criterion for ascertaining it, - 308 R Rarefaction, its effect, by partly removing the pressure of the atmosphere, upon flame and explosion, - 46 on the effects of it by heat on combustion and explosion, - 53 Rhinoceros, an account of some fossil remains of that animal, discovered by Mr. Whitby, in a cavern inclosed in the limestone rock from which he is forming the Breakwater at Plymouth, - 176 S Sepia, the distinguishing characters between the ova of that animal and those of the vermes testacea that live in water, explained, - 297 Snails, experiments made by the late Mr. John Hunter, to ascertain their mode of breeding, - 299 Starlight, of its equalisation, - 309 Stars, of their local situation in the heavens, - 303 of a standard by which the relative arrangement of them may be examined, - 304 a comparison of the order of their magnitudes with the order of their distances, - 306 INDEX. T Table mountain, notice taken of a curious phenomenon on the summit of it, 289 Temperature of the sea, its diurnal change nearly as great as that of the incumbent atmosphere, 284 is comparatively low where the water is shallow, 286 is influenced by the effects of currents, 288 Thermometer, the use of it at sea strongly recommended, 291 Timber, upon the extent of its expansion and contraction in different directions relative to the position of the medulla of the tree, 269 Todd, John T. Esq. An account of some experiments on the torpedo electricus, at la Rochelle, 32 Torpedo electricus, an account of some experiments made on it at la Rochelle, 32 V Vaigrage, son suppression, 99 Vaisseaux, Anglais, de leur structure, considérée dans ses derniers perfectionnements, 86 Vaisseaux, ses forces latentes sont-elles augmentées par le nouveau système? 103 Vermes, an account of the circulation of the blood in that class, 1 Vermes of Linnæus, may be divided into five distinct orders, 6 Vision, natural, of its extent, 313 telescopic, of its extent, 318 natural and telescopic, application of their extent to the probable arrangement of the celestial bodies in space, 320 W Wollaston, Francis John Hyde, B.D. A description of a thermometrical barometer for measuring altitudes, 183 From the Press of W. BULMER & Co. Cleveland-row, St. James's, London.