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INDEX TO THE PHILOSOPHICAL TRANSACTIONS FOR THE YEAR 1849. A. Acidity of the Urine, on the variations of, 235. Anatomy and affinities of the Medusae, 413. Annelides, structure of the liver in, 110. Antimony, crystalline polarity of, 13. Arachnidans, structure of the liver in, 116. Arsenic, crystalline polarity of, 17. Atlantic, lines of Magnetic Declination in, 173. B. Bakerian Lecture, 1. Barlow (W. H. Esq.). On the Spontaneous Electrical Currents observed in the Wires of the Electric Telegraph, 61. Birds, structure of the liver in, 123. Bismuth, crystalline polarity of, 2. Brodie (B. C., Esq.). Investigation on the Chemical Nature of Wax, 91. Brom-orcein, 397. Bryozoon, structure of the liver in, 109. C. Carapace of Chelonian Reptiles, development and homologies of, 151. Chelonian Reptiles, on the development and homologies of the carapace and plastron of, 151; definition of the component parts of the Carapace, 152; of the Plastron, 153. Comparison of the thoracic segment of the Tortoise with that of the Bird, 157—and with that of the Crocodile, 158. Embryonic condition and development of the Carapace, 159; of the Plastron, 163. Dermal nature and seat of development of the neural, costal and lateral plates, and of certain parts of the Plastron, 164. Summary, 165. Supplement on Professor Rathke's conclusions, 166. INDEX. Chlor-melal, 95. Contributions to Terrestrial Magnetism, No. IX., 173. Crustaceans, structure of the liver in, 115. Crystalline polarity of bismuth, 2; of antimony, 13; of arsenic, 17. D. Dalrymple (John, Esq.). Description of an infusory animalecule allied to Notommata, 331. Dasyrurus ursinus, on the dental tissues of, 408. Declination (magnetic) in the Atlantic, 173. Dental tissues of the Marsupial Animals, structure of, 403. Didelphis virginiana, on the dental tissues of, 410. E. Echinodermata, structure of the liver in, 109. Electrical currents (spontaneous) observed in the wires of the electric telegraph, 61. Electricity, Experimental Researches in, Twenty-second Series. On the crystalline polarity of bismuth and other bodies, and on its relation to the magnetic form of force, 1, 19. Crystaline polarity of bismuth, 2; of antimony, 13; of arsenic, 17. Crystalline condition of various bodies, 19. Magne-crystallic force, 22. Embryonic condition of carapace and plastron of Chelonian Reptiles, 158, 159. F. Faraday (Dr.). Experimental Researches in Electricity. Twenty-second Series, 1, 19. Fish (Ganoid and Placoid), on the microscopic structure of the scales and dermal teeth of, 435. —— structure of the liver in, 118. G. Ganglia and nerves of the Heart, 43. Ganoid and Placoid Fish, on the structure of the scales and dermal teeth of, 435. Gases, on the Motion of, 349. Glaisher (James, Esq.). On the reduction of the Thermometrical Observations made at the Apartments of the Royal Society, from the years 1774 to 1781, and from the years 1787 to 1843, 307. Graham (Thomas, Esq.). On the Motion of Gases. Part II., 349. Grove (W. R., Esq.). On the effect of Surrounding Media on Voltaic Ignition, 49. Gyrophora pustulata, analysis of, 393. H. Heart, on the ganglia and nerves of the, 43. Huxley (Thomas Henry, Esq.). On the Anatomy and Affinities of the Medusæ, 413. Hylocoelosaurus, on the osteology of, 271. Hypsiprymnus minor and penicillatus, on the dental tissues of, 406. I. *Iguanodon*, notes on the vertebral column of, 285. ———, osteology of, 271. Angular bone of lower jaw, 272. Vertebral column, 272. Pectoral arch, 277. Restoration of pectoral arch, 279. Humerus, 280. Hind extremities, 282. *Infusory animacule*, description of, 331. *Insects*, structure of the liver in, 113. J. *Jones (Dr. C. Handfield).* On the Structure and Development of the Liver, 109. *Jones (Dr. H. Bence).* Contributions to the Chemistry of the Urine. Paper III., 235. L. *Lecanora tartarea*, analysis of, 396. *Lee (Dr. Robert).* On the Nerves and Ganglia of the Heart, 43. *Lichens*, on the proximate principles of, 393. *Gyrophora pustulata*, 393. *Lecanora tartarea*, 396. Brom-orcin, 397. Quintonitrated erythromannite, 399. *Liver*, on the structure and development of, 109; in the Bryozoon Polype, 109; in the Echinodermata, 109; in the Annelides, 110; in Insects, 113; in Crustaceans, 115; in Arachnidans, 116; in Mollusca, 116; in Fishes, 118; in Reptilia, 122; in Birds, 123; in Mammalia, 124; development, 129. M. *Macropus giganteus*, on the dental tissues of, 404. *Magneocrystallic force*, nature of, 22. *Magnetic declination*, lines of, in the Atlantic, 173. *Magnetism, Terrestrial*, Contributions to, No. IX. 173. Introduction, 173. Observations employed —A. Sea observations uncorrected for the ship’s magnetism, 175; B. Sea observations corrected for the ship’s magnetism, 176. Discussion of the corrections for the ship’s magnetism, 177. Arrangement of the observations, 195. Table of the declination in 1840 at the intersection of every 5° of latitude and longitude, 202. Table of secular change, 203. Comparison with M. Gauss’s general theory, 204. General table of the observations employed in the Map, arranged according to latitude and longitude, 207. *Mammalia*, structure of the liver in, 124. *Mantell (Dr. G. A.).* Additional observations on the Osteology of the Iguanodon and Hylaeosaurus, 271. *Marsupial animals*, on the dental tissues of, and more particularly of the enamel, 403. *Melen*, 99. *Melissin*, 93.—*Melissic acid*, 94. *Melville (Dr. A. G.).* Notes on the Vertebral Column of the Iguanodon, 285. *Meteorology of the Lake Districts of Cumberland and Westmoreland*, 73, 319. *Mollusca*, structure of the liver in, 116. *Monostomatæ*, anatomy of, 413. *Myricin*, 91; distillation of, 98; palmitic acid from saponification and distillation of, 96, 98. N. Nitroprussides, a New Class of Salts, on the. Section I. 477. Section II. General remarks on the Nitroprussides, 485. Nitroprussic acid, 486. Nitroprusside of sodium, 487; of potassium, 490; of barium, 492; of silver, 493; of copper, 495; of iron, 496; of zinc, 497. Section III. On changes in solutions of Nitroprussides, 498. Section IV. On the action of caustic alkalies in nitroprussides, 508. Section V. Action of an Alkaline Sulphuride on a Nitroprusside, 511. Action of sulphuretted hydrogen on nitroprussides, 513. On the constitution of the nitroprussides, 516. Notommata, description of an infusory animalcule allied to, 331. O. Osteology of Iguanodon and Hylaeosaurus, 271. Owen (Professor). On the Development and Homologies of the Carapace and Plastron of the Chelonian Reptiles, 151. P. Palmitic acid, 96. Petaurus taguanoidea and sciurus, on the dental tissues of, 408. Phalangista vulpina, on the dental tissues of, 407. Phascolomys Wombat, on the dental tissues of, 406. Placoid and Ganoid Fish, on the structure of the scales and dermal teeth of, 435. Playfair (Dr. Lyon). On the Nitroprussides, a New Class of Salts, 477. Potass (caustic), its influence on the acidity of the urine, 261. Q. Quinto-nitrated erythromannite, 399. R. Rain, fall of, at various heights above the earth's surface, 13, 319. Reptilia, structure of the liver in, 122. Rhizostomidae, anatomy of, 413. S. Sabine (Lieut.-Colonel). Contributions to Terrestrial Magnetism, No. IX. 173. Salts, a new class of, the nitroprussides, 477. Stenhouse (Dr. John). Examination of the proximate Principles of some of the Lichens, 393. Sulphate of Iron, magnecrystallic condition of, 37. Sulphates, variation of, in urine, 252. T. Tartaric acid and tartrate of potash, their influence on the acidity of the urine, 261. Terrestrial magnetism, Contributions to, No. IX. 173. INDEX. Thermometrical Observations made at the Apartments of the Royal Society, reduction of, 307. Thylacinus cynocephalus, on the dental tissues of, 409. Tomes (John, Esq.). On the Structure of the Dental Tissues of Marsupial Animals, and more particularly of the Enamel, 403. Tongue, minute structure of the papillæ and nerves of, in the Frog and Toad, 139. Tongue of the Frog, 139. Vibratile cilia and rugæ, 141. Conical papillæ, 142. Nerves of, 145. Nerves of the inferior surface of the tongue, 146. Mucous follicles, 146. Tongue of the Toad, 147. Tortoise, thoracic segment of, compared with that of Birds, 157,—and with that of the Crocodile, 158. Transpiration of Gases, 349. U. Urine, Contributions to the Chemistry of, 235. I. On the variations in the acidity of the urine in a state of health, 235. II. On the simultaneous variations of the amount of uric acid and the acidity of the urine in a healthy state, 245. On the deposit of urates in the urine, 251. III. Variation of the sulphates in the urine in a healthy state, and on the influence of sulphuric acid, sulphur and the sulphates, on the amount of sulphates in the urine, 252. On the influence of caustic potash, tartaric acid and the tartrate of potash, on the acidity of the urine, 265. V. Voltaic Ignition, effect of surrounding media on, 49. W. Waller (Dr. A.). Minute Structure of the Papillæ of the Tongue of the Frog and Toad, 139. Wax, Investigation on the Chemical Nature of, III., 91. Myricin, 91. Melissin, 93. Melissic acid, 94. Chlor-melal, 95. Palmitic acid from the saponification of myricin, 96. Distillation of myricin, 98. Palmitic acid from the distillation of myricin, 98. Melen, 99. Williamson (W. C., Esq.). On the Microscopic Structure of the Scales and Dermal Teeth of some Ganoid and Placoid Fish, 435. LONDON: PRINTED BY RICHARD AND JOHN E. TAYLOR, RED LION COURT, FLEET STREET. PRESENTS RECEIVED BY THE ROYAL SOCIETY, WITH THE NAMES OF THE DONORS. 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Nos. 38, 39, 40. ——— Méthode pour déterminer à priori le nombre des Racines réelles positives et le nombre des Racines réelles négatives d'une équation d'un degré quelconque. 8vo. Paris 1813. ——— Rapports sur divers Mémoires lus à la Première Classe de l'Institut Impérial. 8vo. Paris 1813. PRESENTS. CAUCHY (A. L.) Sur la Théorie de la Lumière. CAUTLEY (P. T.) and FALCONER (H.) Fauna Antiqua Sivalensis. Parts 7, 8, 9. fol. London 1847-49. CERQUERO (J. S.) Almanaque Nautico y Efemérides Astronómicas para los Años de 1845-1850, calculadas de orden de S. M. Para el Observatorio de Marina de la Ciudad de S. Fernando. 4to. Madrid 1843-48. Periódico Mensual de Ciencias Matemáticas y Físicas. Tomo I. No. 1 to 6. 4to. Cadiz 1848. CHALLIS (Rev. James.) Astronomical Observations made at the Cambridge Observatory for 1843. Vol. XV. 4to. Cambridge 1848. CIVIALE (Dr.) De l'Urétrotomie, ou de quelques Procédés peu usités de traiter les Rétrécissements de l'Urétre. 8vo. Paris 1849. COLQUHOUN (E. P.) An Authentic Interpretation of the Guarantee of England and France with reference to the Duchy of Schleswig, by Dr. Leverkus, translated and edited with prefatory remarks. 8vo. London 1848. CRAWFURD (John.) Vital Statistics of a District in Java. DANA (James D.) Review of Chambers's Ancient Sea Margins. 8vo. Newhaven 1848. D'ARCHIAC (A.) Histoire des Progrès de la Géologie. Tome deuxième. Première Partie. 8vo. Paris 1848. DAUSSY (P.) Table des Positions Géographiques des Principaux Lieux du Globe. 8vo. DAVY (John.) Lectures on the Study of Chemistry in connexion with the Atmosphere, the Earth, and the Ocean. 8vo. London 1849. DE BEAUMONT (Élie.) Explication de la Carte Géologique de la France, redigée, &c. Tome II. 4to. Paris 1848. DE KONINCK (L.) Recherches sur les Animaux Fossiles. 4to. Liège 1847. DE LA BECHE (Sir H. T.) Address delivered at the Anniversary Meeting of the Geological Society of London, on the 16th of February 1849. 8vo. London 1849. DE LA RIVE (A.) Researches on the Voltaic Arc, from the Philosophical Transactions. 4to. London 1847. DE MORGAN (A.) On the Additions made to the second edition of the Commercium Epistolicum. Trigonometry and Double Algebra. 8vo. London 1849. DE NOBREGA (G. J.) On the Cultivation of Cochineal. 8vo. London 1849. DENT (E. J.) A Treatise on the Aneroid Barometer. 8vo. London 1849. DE PERTHES (Boucher). Antiquités Celtiques et Antédiluviennes. 8vo. Paris 1847. DE RIVAZ (C.) Description des Eaux Minéro-Thermales et des Étuves, de l'Île d'Ischia. 8vo. Naples 1846. Voyage de Naples à Capri et à Pæstum. 8vo. Naples 1846. DILLWYN (L. W.) Materials for a Fauna and Flora of Swansea and the Neighbourhood. 8vo. Swansea 1848. DORAL (Antonio). Memoria Descriptiva del Circulo de Marcar y sus Aplicaciones. 8vo. Madrid 1848. DRACH (S. M.) An easy Rule for Formulizing all Epicyclical Curves with one moving circle by the Binomial Theorem. DONORS. The Author. The Marquis of Northampton, V.P.R.S. The Observatory of San Fernando. The Observatory. The Author. The Editor. Lieut.-Col. Sykes. The Author. The French Government. The Author. The Author. The Author, by Mr. Roach Smith. The Author. The Author. The Author. The Author. PRESENTS. DUFRÉNOY and DE BEAUMONT (E.) Explication de la Carte Géologique rédigée, &c. Tom. II. 4to. Paris 1848. DUMONT (A.) Mémoire sur les Terrains Ardennais et Rhénan. 4to. Bruxelles 1848. DU POTET (Le Baron.) Journal du Magnétisme. Tom. I. to V. 8vo. Paris 1845–47. DURAN (J. A.) Code des Créations Universelles et de la Vie des Êtres. 8vo. Bordeaux 1841. Nouveau Système de Physique générale en opposition avec les Principes reçus. 8vo. Paris 1843. ELLIOTSON (J.) Cure of a true Cancer of the Female Breast with Mesmerism. 8vo. London 1848. ENCKE (J. F.) Astronomische Beobachtungen auf der Königlichen Sternwarte zu Berlin. Dritter Band. 4to. Berlin 1848. Berliner Astronomisches Jahrbuch für 1851. 8vo. Berlin 1848. ERMAN (A.) Reise um die Erde durch Nord-Asien und die beiden Oceane in den Jahren 1828, 1829 und 1830. 3rd Band and Atlas. 8vo. Berlin 1848. FALCONER (H.) and CAUTLEY (P. T.) Fauna Antiqua Sivalensis. Parts 7, 8, 9. fol. London 1847–49. FORBES (John.) A Physician's Holiday. 8vo. London 1849. FORSTER (T. J. M.) L'Age d'Or, ou Pensées Passagères adressées comme Discours préliminaire à ceux qui suivent la science dans sa marche d'aujourd'hui vers la perfection de l'avenir. 8vo. Bruges 1847. Mémoire sur les Étoiles Filantes. 8vo. Bruges 1846. FRODSHAM (C.) A few Remarks upon the construction and principles of action of the Aneroid Barometer. 8vo. London 1849. FROST (James.) Description of the Causes of the Explosion of Steam-Boilers. 8vo. New York 1848. GIBBES (R. W., M.D.) Monograph of the Fossil Squalidae of the United States. 4to. Philadelphia 1848. GILBART (J. W.) A Record of the proceedings of the London and Westminster Bank. 4to. London 1847. A Review of the Practical Working of the Act of 1844 for regulating the issue of Notes by the Bank of England. 8vo. London 1849. GLAISHER (J.) Remarks on the Weather during the quarters ending March 31, June 30 and September 30, 1848. GOULD (J.) An Introduction to the Birds of Australia. 8vo. London 1848. The Birds of Australia. Parts 31 to 36. GRANTHAM (R. B.) A Treatise on Public Slaughter Houses. 8vo. London 1848. GRAY (J. E.) A Letter to the Earl of Ellesmere on the Management of the Library of Printed Books in the British Museum. 8vo. London 1849. GRIFFITH (W.) Journals of Travels in India. 8vo. Calcutta 1847. DONORS. The French Government. The Author. Le Baron Du Potet. The Author. The Observatory. The Author. The Marquis of Northampton, V.P.R.S. The Author. The Author. The Author. The Marquis of Northampton, V.P.R.S. The Author. The Author. The Directors of the East India Company. PRESENTS. GRIFFITH (W.) Development of Organs in Phanerogamous Plants. 8vo. Calcutta 1847. Atlas to the above. 4to. Calcutta 1847. HALL (Marshall.) Essays chiefly on the Theory of Paroxysmal Diseases of the Nervous System. A Letter addressed to the Earl of Rosse, President-Elect of the Royal Society. 2nd edit. 8vo. London 1848. HERSCHEL (Sir J. F. W., Bart.) Outlines of Astronomy. 8vo. London 1849. HOMERSHAM (S. C.) Supplement to the Report to the Directors of the Manchester, Sheffield and Lincolnshire Railway Company, on the Supply of Surplus Water to Manchester, Salford and Stockport. 8vo. London 1848. HOWARD (Luke.) Barometrographia. fol. London 1847. JERWOOD (J.) A Lecture on the New Planet Neptune, and its Discovery. 8vo. London 1849. JOBERT (A. J.) Traité de Chirurgie Plastique. 2 vols. and Atlas. 8vo. Paris 1849. JOHNSON (M. J.) Astronomical Observations made at the Radcliffe Observatory, Oxford, in 1846. Vol. VII. 8vo. Oxford 1848. JOURNALS: Astronomische Nachrichten. Nos. 628 to 665. Calcutta Journal of Natural History. No. 30. 8vo. Calcutta 1847. Journal of the Agricultural and Horticultural Society of India. Vol. VI. Parts 2, 3. 8vo. Calcutta 1847. Journal of the Asiatic Society of Bengal. February to June 1848, and Nos. 192 to 199. 8vo. Calcutta 1848–49. Journal of the Indian Archipelago. Supplement to No. 6. Vol. I. Nos. 3 to 12. Vol. II. Nos. 1, 2. Vol. III. 8vo. Singapore 1848–49. Scheikundige Onderzoeken Gedaan in het Laboratorium der Utrechtsche Hoogeschool. 5de Deel, 3 & 4 Stuken. 8vo. Rotterdam 1849. The American Journal of Science and Arts. Vols. XL to XLIIX. 1841–45. Index Volume to First Series. Vols. I. to VII. Second Series. 1846–49. The Athenæum. January to June 1849. The Boston Journal of Natural History. Vols. I. II. 8vo. Boston 1834–39. The Builder. Parts 1 to 5. Vol. VII. 1849. The Literary Gazette. January to June 1849. JUPP (E. B.) An Historical Account of the Worshipful Company of Carpenters. 8vo. London 1848. KARSTEN (H.) Die Vegetationsorgane der Palmen. 4to. Berlin 1847. KING (Capt. P. P.) On the Specific Gravity of Sea-Water. Selections from a Meteorological Journal kept on board H.M.S. Adventure. KREIL (K.) Magnetische und Geographische Ortsbestimmungen im Österreichischen Kaiserstaate. 4to. Prag 1848. Magnetische und Meteorologische Beobachtungen zu Prag. 4to. Prag 1848. DONORS. The Directors of the East India Company. The Author. The Author. The Author. The Radcliffe Trustees. Professor Schumacher. The Directors of the Hon. East India Company. The Society. The Editor. The Utrecht Society of Sciences. Messrs. Silliman. The Editor. The Editor. The Editor. The Editor. The Carpenters' Company. The Author. The Author. The Author. PRESENTS. KUPFFER (A.) Annuaire Magnétique et Météorologique de Russie, année 1845. 4to. St. Pétersbourg 1848. ——— Résumés des Observations Météorologiques, &c. 4to. St. Pétersbourg 1848. LAMONT (J.) Annalen der Königlichen Sternwarte bey München. 8vo. München 1848. LAPLACE (P. S. de.) Œuvres:—Traité de Mécanique Céleste, 5 vols. Exposition du Système du Monde, 1 vol. Théorie Analytique des Probabilités, 1 vol. 4to. Paris 1843-47. LEE (Robert.) Memoirs on the Ganglia and Nerves of the Uterus. 4to. London 1849. LEIDY (Joseph.) On a new Fossil Genus and Species of Ruminantoid Pachydermata, Merycoidodon Culbertsonii. ——— On a new genus and species of Fossil Ruminantia. ——— On some bodies in the Boa Constrictor resembling the Pacinian Corpuscles. ——— Researches into the Comparative Structure of the Liver. LIBRI (M.) Réponse de M. Libri au Rapport de M. Boucly. 8vo. London 1848. LLoyD (Rev. H.) An Account of a Method of determining the Total Intensity of the Earth's Magnetic Force in Absolute Measure. ——— Circular for the Information of the Directors of the British Colonial Magnetical Observatories. 8vo. ——— On the Corrections required in the Measurement of the Magnetic Declination. ——— On the Mean Results of Observations. 4to. Dublin 1849. ——— Results of Observations made at the Magnetical Observatory of Dublin during the years 1840-43. 4to. Dublin 1849. LOUYET (M.) De l'Ébullition des Liquides. 8vo. Bruxelles. LOVELACE (Earl of.) On Climate in connection with Husbandry. 8vo. London 1848. ——— On Harbours of Refuge. 8vo. London 1849. ——— Review of the work of Messrs. Rubichon and Mounier, and of the Memoir of M. Benoiton de Chateauneuf. 8vo. London 1848. ——— Review of "Du Système Social" by A. Quetelet. LOWE (Edward.) Prognostications of the Weather, or Signs of Atmospheric Changes. 8vo. London 1849. LUBBOCK (J. W.) Appendix to a Treatise "On the Theory of the Moon." ——— On the Theory of the Moon, &c. Parts 6, 7. 8vo. London 1848-49. MACKINNON (W. A.) History of Civilization. 2 vols. 8vo. London 1846. MÄDLER (J. H.) Beobachtungen der Kaiserlichen Universitäts Sternwarte, Dorpat. Elfter Band. 4to. Dorpat 1845. MANTELL (G. A.) A brief Notice of the Organic Remains recently discovered in the Wealden Formation. 8vo. London 1849. ——— On the Fossil Remains of Birds collected in New Zealand by Walter Mantell, Esq. 8vo. London 1848. DONORS. The Russian Government. The Observatory. The French Government. The Author. The Author. Col. Sabine. The Author. The Author. The Author. The Author. The Author. The Author. PRESENTS. MAPS, CHARTS, &c.: Admiralty Charts and Sailing Directions published during 1848. Eight Cartes, published by the Dépôt de la Marine, 1848. L'Afrique d'après une Carte de la fin du 17ème Siècle, de la Bibliothèque de M. Béat de Lerber, 1841. MARTIN (George A.) The Undercliff of the Isle of Wight; its Climate, History and Natural Productions. 8vo. London 1849. MARTIN (John.) Documents and Drawings relating to the Thames and Metropolis Improvement. London 1836–49. MARTINS (C.) Essai sur la Végétation de l'Archipel des Féroë. 8vo. MAYO (Thomas.) Sequel to Outlines of Medical Proof. 8vo. London 1849. MISCELLANEOUS: A Lock of the Hair of the late Sir Humphry Davy, Bart. Specimens of Tea produced in the District of Kumaon in the N.W. Provinces of the Bengal Presidency. Two Specimens of Meteoric Iron. MOON (Robert.) Fresnel and his Followers: a Criticism. 8vo. Cambridge 1849. MORTILLARO (Vincenzo.) Illustrazione di un Astrolabio Arabo-Siculo. 8vo. Palermo 1848. MOUAT (F. J.) The Elements of Anatomy, translated into Hindustani. 8vo. Calcutta 1848. NAPIER (H. E.) Florentine History, from the earliest authentic records to the Accession of Ferdinand the Third. 6 vols. 8vo. London 1846. NEWPORT (George.) On the Anatomy and affinities of Pteronarcy regalis Newm.; with a Postscript, containing descriptions of some American Perlidæ, together with Notes on their Habits. 4to. On the Natural History, Anatomy and Development of the Oil Beetle, Meloë, more especially of Meloë cicatricosus. 4to. NEWTON (Sir Isaac.) Thirteen Letters from Sir Isaac Newton to John Covel, D.D., from original Manuscripts in the Library of Dawson Turner, Esq., F.R.S. 8vo. Norwich 1848. OERSTED (H. C.) Précis d'une Série d'Expériences sur le Diamagnétisme. OWEN (R.) On Parthenogenesis. 8vo. London. On the Nature of Limbs. 8vo. London 1849. PASSOT (F.) Réfutation de la Solution Synthétique donnée par Newton du problème des Forces centrales. Sheet. Paris 1849. PEIRCE (Benjamin.) The Latitude of the Cambridge Observatory, in Massachusetts, determined by W. C. Bond and others. PELLATT (Apsley.) Curiosities of Glass Making, &c. 4to. London 1849. PERIGAL (Henry.) Transformations of a Kinematic Curve. A Sheet. PETTENKOFER (D. M.) Die Chemie in ihrem Verhältnisse zur Physiologie und Pathologie. Festrede. 4to. München 1848. PICKETT (W. V.) The Fine Arts Journal, containing the Exposition of a New System of Architecture. 4to. London 1847. New Forms in Architecture for Iron. 8vo. London 1849. PILBROW (James.) A New Method of Traction for Railways and Canals, called the Hydrodynamic System of Propulsion. 8vo. London 1848. DONORS. The Admiralty. Dépôt de la Marine. M. Béat de Lerber. The Author. The Author. The Author. Lady Davy. Hon. East India Company. Prof. Boguslawski. The Author. The Author. D. Turner, Esq., F.R.S. The Author. The Author. Major Graham. The Author. The Author. The Bavarian Academy. The Author. The Author. PRESENTS. PLANA (Jean.) Recherches Analytiques sur la Découverte de la Loi de la Pésanteur des Planètes vers le Soleil, et sur la Théorie de leur mouvement elliptique. 4to. Turin 1848. PORTRAITS:— Portrait of J. J. Selby, Esq. Dr. John Lee, F.R.S. William Yarrell, Esq. John Gould, Esq., F.R.S. J. S. Henslow, Esq. N. Wallich, Esq., F.R.S. Sir William Jardine. Bishop of Norwich, F.R.S. (Lithograph by T. H. Maguire.) Lieut. Holman, F.R.S., by J. R. Jackson, from the Picture by J. P. Knight, R.A. Mezzotint. W. R. Grove, Esq., from a Daguerreotype by Mr. Claudet. The Marquis of Northampton, P.R.S., by the late Thomas Phillips, Esq., R.A. Sir Charles Lyell, F.R.S., lithograph, from a Daguerreotype by J. E. Mayall. M. Faraday, Esq., F.R.S., from a Daguerreotype by Mr. Claudet. Lithograph. QUARANTA (Bernardo.) Illustrazione di una Ostagra dissotterrata in Pompei e falsamente chiamata Forcipe Ercolanese. 8vo. QUETELET (A.) Notice sur Le Colonel G. P. Dandelin. 8vo. Bruxelles 1848. Du Système Social et des Lois qui le régissent. 8vo. Paris 1848. Observations des Phénomènes Périodiques. 4to. Bruxelles 1848. Sur le Climat de la Belgique. 4to. Bruxelles 1848. REGNAULT (V.) Cours Élémentaire de Chimie. 4to. Paris 1848. ROGERS (H. D.) An Address on the recent progress of Geological Research in the United States, delivered at the Fifth Annual Meeting of the Association of American Geologists and Naturalists, held at Washington in May 1844. 8vo. Philadelphia 1844. ROGERS (W. B.) and ROGERS (R. E.) On the Absorption of Carbonic Acid Gas by Liquids. 8vo. Newhaven 1848. ROGERS (H. D.) and ROGERS (W. B.) An Account of Two Remarkable Trains of Erratic Blocks in Berkshire, Massachusetts. ROSS (Sir John.) A Short Treatise on the Deviation of the Mariner's Compass. 8vo. London 1849. ROTHMAN (R. W.) Observations on the Climate of Italy and other Countries in Ancient Times. 8vo. London 1848. SAINT GERMAIN (Bertrand de.) Des Manifestations de la Vie et de l'Intelligence à l'aide de l'Organisation. 8vo. Paris 1848. SCHNEIDER (W.G.) Ueber das Metereisen von Seeläsgen bei Schwiebus. SCHUMACHER (C. H.) Astronomische Nachrichten. Nos. 628 to 665. 4to. SHADWELL (C. F.) Tables for determining the Latitude by the Simultaneous Altitudes of two Stars. 8vo. London 1849. DONORS. The Author. Mr. George Ransome. Mr. Claudet. The Marquis of Northampton. Mr. J. E. Mayall. Mr. Claudet. The Author. The Author. M. Biot. The Author. The Author. The Author. The Author. PRESENTS. SIBSON (Francis.) Illustrations of Diseases of the Chest. 8vo. Worcester 1844. The Author. On the Movements of Respiration in Disease, and on the use of a Chest-Measurer. 8vo. 1848. SIMPSON (J. Y.) Obstetrical Statistics, &c.; a second letter in reply to Dr. Collins. 8vo. Edinburgh 1848. The Author. SMEE (Alfred.) Elements of Electro-Biology. 8vo. London 1849. The Author. SMYTH (Capt. W. H.) Description of an Astrological Clock belonging to the Society of Antiquaries. 4to. The Author. SMYTH (C. P.) On the Determination of the True Strength and Direction of the Wind at Sea. 4to. Edinburgh 1848. The Author. Notice of the Orbit of the Binary Star α Centauri, as recently determined by Captain Jacob. 4to. Edinburgh 1848. The Author. SOLLY (E.) Syllabus of a Complete Course of Lectures on Chemistry. 8vo. London 1849. The Author. SOMERVILLE (Mary.) Physical Geography. 2 vols. 8vo. London 1848. The Authoress. SPENCE (William.) Address delivered at the Anniversary Meeting of the Entomological Society of London on the 22nd Jan. 1849. 8vo. London 1849. The Author. STANFORD (J. F.) Systematic Colonization; a Series of Letters. 8vo. London 1848. The Author. STRATFORD (Lieut.) The Nautical Almanac for the year 1852. 8vo. London 1848. Lieut. Stratford, F.R.S. SYKES (Lieut.-Col.) A Notice respecting some Fossils collected in Cutch, by Captain Walter Smee. The Author. Mortality in the Jails of the twenty-four Pergunnahs, Calcutta. Notes on the Religious, Moral, and Political State of India before the Mahomedan Invasion. On the Population and Mortality of Calcutta. Report of a Committee of the Council of the Statistical Society of London to investigate the State of the Inhabitants and their Dwellings in Church Lane, St. Giles's. Statistics of Civil Justice in Bengal. TAYLOR (T. G.) Meteorological Observations made at the Meteorological Bungalow on Dodabetta, 8640 feet above the level of the sea, in 1847–48. 4to. Madras 1848. The Directors of the Hon. East India Company. Astronomical Observations made at the Observatory at Madras in 1843–47. 4to. Madras 1848. Meteorological Observations made at the Observatory at Madras in 1841–45. 4to. Madras. TEMMINCK (C. J.) Coup-d'œil général sur les Possessions Néerlandaises dans l'Inde Archipelagique. J. E. Gray, Esq., F.R.S. TURNER (Dawson.) Guide to the Historian, the Biographer, the Antiquary, the Man of Literary Curiosity and the Collector of Autographs, towards the Verification of Manuscripts by reference to Engraved Fac-similes of Handwriting. 8vo. Yarmouth 1848. The Author. VERLANDER (H.) The Vestal, and other Poems. 8vo. London 1837. The Author. WALDHEIM (G. F. de.) Notice sur quelques Sauriens Fossiles du Gouvernement de Moscou. The Author. PRESENTS. WALTERSHAUSEN (Sartorius v.) Physisch-geographische Skizze von Island. 8vo. Göttingen 1847. WARREN (J. C.) Effects of Chloroform and of Strong Chloric Ether, as Narcotic Agents. 8vo. Boston, U.S. 1849. ——— The Physiological Effects of Alcoholic Drinks, with Documents and Records of the Massachusetts Temperance Society. 8vo. Boston, U.S. 1848. WARTMANN (E.) Sur divers Phénomènes Météorologiques. ——— Troisième, Cinquième, Sixième et Septième Mémoires sur l'Induction. 8vo. WELD (C. R.) The Eleventh Chapter of the History of the Royal Society, with a review of the same by Professor De Morgan, reprinted by Charles Babbage, Esq., F.R.S. 8vo. London 1848. WHICHCORD (J.) Observations on the Sanitary Condition of Maidstone. 8vo. London 1849. WILLIAMS (George.) Historical and Descriptive Memoir on the Town and Environs of Jerusalem. 8vo. London 1849. WILLICH (C. M.) Annual Supplement to the Tithe Commutation Tables. 8vo. London 1849. WILLIS (Rev. Robert.) The Architectural History of the Holy Sepulchre at Jerusalem. 8vo. London 1849. WINDUS (Thomas.) A New Elucidation of the Subjects on the celebrated Portland Vase. fol. London 1845. WEDGWOOD (J.) Reprint of a description of the Portland Vase, by J. Wedgwood, F.R.S., with the addition of notes by Thomas Windus, F.S.A. fol. London 1845. DONORS. The Author. The Author. ——— The Author. C. Babbage, Esq., F.R.S. The Author. The Rev. Robert Willis. The Author. Thomas Windus, Esq.