Back Matter

INDEX TO THE PHILOSOPHICAL TRANSACTIONS FOR THE YEAR 1852. A. Air-engine, on the, 65. Analytical researches connected with Steiner's extension of Malfatti's problem, 253. Annelida, on the circulating fluids of, 622; chylaqueous fluid in, 624; blood-proper in, 630. Arachnida, on the circulating fluids of, 652. Articulata, on the circulating fluids of, 645. Ascaris mystax, on the reproduction of, 563. Atmospheric air, determination of the specific heat of, 72. B. Bakerian Lecture, 1. Bat's wing, on the rhythmical contractility of the veins of, 131. Baxter (H. F., Esq.). An Experimental Inquiry undertaken with the view of ascertaining whether any and what signs of Current Force are manifested during the organic process of Secretion in living animals, 279. Biliary secretion, on the manifestation of current force during, 280. Binocular vision, remarkable phenomena of, 1. Blood of invertebrate animals, on the, 595. Booth (Rev. James, LL.D.). Researches on the Geometrical properties of Elliptic Integrals, 311. Brooke (Charles, Esq.). On the Automatic Registration of Magnetometers and Meteorological Instruments by Photography, No. IV., 19. Bryozoa, on the circulating fluids of, 655. MDCCCLII. C. Cayley (Arthur, Esq.). Analytical Researches connected with Steiner's extension of Mal- fatti's Problem, 253. Cleavage and foliation of the rocks of the north of Scotland, arrangement of, 445. Crustacea, on the circulating fluids of, 650. Current force, on the manifestation of, during secretion in living animals, 279. D. Doris, on the anatomy of, 207. Digestive system, 208. Generative organs, 216. Organs of circulation and respiration, 224. Nervous system, 230. E. Echinodermata, on the circulating fluids of, 605. Blood-proper in, 608. Chylaqueous fluid in, 612. Electricity, Experimental Researches in.—Twenty-eighth series. On lines of magnetic force, 25. —. Twenty-ninth series, 137. On the employment of the induced magneto-electric cur- rent as a test and measure of magnetic force, ibid. Galvanometer indications, ibid. Revolving rectangles and rings, 142. On the amount and general disposition of the forces of a magnet when associated with other magnets, 152. Delineation of lines of magnetic force by iron filings, 156. Electro-chemical polarity of gases, 87. Elliot (Captain C. M.). On the Lunar Atmospheric Tide at Singapore, 125. Elliptic integrals, researches on the geometrical properties of, 311. On the spherical ellipse, 316. On the spherical parabola, 328. On the logarithmic ellipse, 345. On the logarithmic hyper- bola, 362. Expression of the difference between an arc of a logarithmic hyperbola and the corresponding arc of the tangent parabola, 369. On the values of complete elliptic integrals of the third order, 374. On conjugate arcs of hyperconic sections, 385. On the maximum protangent arcs of ditto, 401. On derivative hyperconic sections, 406. Entozoa, on the circulating fluids of, 619. Ethyl, action of tin upon iodide of, 418. F. Faraday (Michael, Esq.). Experimental Researches in Electricity. Twenty-eighth Series, 25. Twenty-ninth Series, 137. Foliation and cleavage of the rocks of the north of Scotland, on the arrangement of the, 445. Con- tortions of the foliation, 447. Its arrangement in arches, ibid. Analogy between foliation and cleavage, 448. Geographical arrangement of, 449. Foliation different from stratification, 457. Gneiss and mica schist not metamorphic, 458. Frankland (Dr. E.). On a new series of organic bodies containing metals, 417. G. Gases, on the electro-chemical polarity of, 87. Gasteropoda, on the circulating fluids of, 657. INDEX. Glands (ductless), on the development of, in the chick, 295. Development of the spleen, 295; of the supra-renal glands, 302; of the thyroid glands, 305. Gray (Henry, Esq.). On the Development of the Ductless Glands in the Chick, 295. Grove (W. R., Esq.). On the Electro-chemical Polarity of Gases, 87. H. Hancock (Albany, Esq.) and Embleton (Dr. Dennis). On the Anatomy of Doris, 207. Heat, specific, of atmospheric air, experimental determination of, 72. Henfrey (Arthur, Esq.). On the Anatomy of the Stem of Victoria regia, 289. I. Insects, on the chylaqueous fluid in the larva of, 648. Blood-proper in, 650. Invertebrata, on the blood-proper and chylaqueous fluid of, 595. In Porifera, 601. Polypifera, 602. Medusae, 603. Echinodermata, 605. Blood-proper in, 608. Chylaqueous fluid in, 612. Entozoa, 619. Annelida, 622. Chylaqueous fluid in, 624. Blood-proper in, 630. Articulated animals, 645. Myriapoda, 646. Chylaqueous fluid in the larvae of Insects, 648. Blood-proper of Insects, 650. Crustacea, ibid. Arachnida, 652. Mollusca, 653. Bryozoa, 655. Tunicata, 656. Gasteropoda, 657. J. Jones (T. Wharton, Esq.). Discovery that the Veins of the Bat's Wing (which are furnished with valves) are endowed with Rythmical Contractility, and that the onward flow of blood is accelerated by each contraction, 131. Joule (James P., Esq.). On the Air Engine, 65. L. Letheby (H., M.B.). Account of two cases in which Ovules, or their remains, were discovered in the Fallopian tubes of unimpregnated females, &c., 57. Light, on the change of refrangibility of, 463*. Lunar atmospheric tide at Singapore, 125. M. Magnetic disturbances, on periodical laws discoverable in the mean effects of, 103. Magnetic force, on lines of, 25. On the employment of induced magneto-electric currents as a test and measure of, 137. Delineation of, by means of iron filings, 156. Magneto-electric currents, as a test and measure of magnetic forces, 137. Magnetometers, automatic registration of, by photography, 19. Magnetometers (balanced), compensation of, 22. Malfatti's problem, analytical researches connected with Steiner's extension of, 253. Mammary secretion, on the manifestation of current force during, 284. * For the particular index of this paper see p. 562. Medusae, on the circulating fluids of, 603. Meteorological instrument, automatic registration of, by photography, 19. Methyl, action of zinc upon iodide of, 427; action of mercury upon ditto, 436. Mollusca, on the circulating fluids of, 653. Myriapoda, on the circulating fluids of, 646. N. Nelson (Henry, M.D.). On the Reproduction of Ascaris mystax, 563. Nymphæaceæ, monocotyledonous character of, 293. O. O'Brien (Rev. Prof.). On symbolic forms derived from the conception of the translation of a directed magnitude, 161. Organic bodies, on a new series of, containing metals, 417. Action of tin upon iodide of ethyl, 418. Oxide of stanethylium, 420. Sulphide of ditto, 421. Chloride of ditto, 422. Stanethylium, ibid. Action of zinc upon iodide of methyl, 427. Zincmethylium, ibid. Zincethylium, 436. Zincamylum, ibid. Action of mercury upon iodide of methyl, ibid. Ovules discovered in the Fallopian tubes, 57. P. Periodical laws discoverable in the mean effect of the larger magnetic disturbances, 103. Photography applied to the automatic registration of magnetometers, &c., 19. Polypifera, on the circulating fluids of, 602. Porifera, on the nutrient fluids of, 601. Pseudoscope, description of, 11. R. Refrangibility of light, on the change of, 463. Reproduction of Ascaris mystax, 563. Respiratory action, on the manifestation of current force during, 285. S. Sabine (Colonel Edward). On Periodical Laws discoverable in the mean effects of the larger Magnetic Disturbances, No. II., 103. Saturated vapours, on a general law of density in, 83. Secretion, an experimental inquiry undertaken with the view of ascertaining whether any and what signs of current force are manifested during this process in living animals, 279. On the manifestation of current force during biliary secretion, 280; during urinary secretion, 283; during mammary secretion, 284; during respiratory action, 285. Sharpe (Daniel, Esq.). On the Arrangement of the Foliation and Cleavage of the Rocks of the North of Scotland, 445. Singapore, on the lunar atmospheric tide at, 125. Spleen, on the development of, in the chick, 295. Stanethylium, oxide of, 420; sulphide of, 421; chloride of, 422. Stereoscope, the, and its effects, 5. Stokes (Prof. G. G.). On the Change of Refrangibility of Light, 463. Supra-renal glands, on the development of, in the chick, 302. Symbolic forms derived from the conception of the translation of a directed magnitude, 161. Part I. General investigation of symbolic forms, 161; preliminary definitions, 163; symbolic representations of the effects produced by the translation of a directed magnitude, 169. Part II. Applications of symbolic forms, 180; geometrical applications, ibid.; statistical applications, 182; applications to dynamics, 186; application to determine the correction of the earth's rotation, &c., 192; application to determine the motion of a rigid body about its centre of gravity, 198. T. Thermo-dynamic engine, synthetical investigation of the duty of, 78. Thomson (Prof. William). Synthetical investigation of the duty of a perfect Thermo-dynamic Engine, 78. Thyroid gland, on the development of, in the chick, 305. Tin, action of, upon iodide of ethyl, 418. Tunicata, on the circulating fluids of, 656. U. Urinary secretion, on the manifestation of current force during, 283. V. Veins, rhythmical contractility of, in the bat's wing, 131. Victoria regia, on the anatomy of the stem of, 289. Vision, contributions to the physiology of. Part II. On some remarkable and hitherto unobserved phenomena of binocular vision, 1; perceived magnitude of an object as distinct from its retinal magnitude, 3; stereoscope and its effects, 5; conversions of relief, 10; pseudoscope, 11. W. Waterston (J. J., Esq.). On a General Law of Density in Saturated Vapours, 83. Wheatstone (Prof. Charles). The Bakerian Lecture: Contributions to the Physiology of Vision. Part II. On some remarkable and hitherto unobserved Phenomena of Binocular Vision, 1. Williams (Thomas, M.D.). On the Blood-proper, and Chylaqueous Fluid of Invertebrate Animals, 595. Z. Zinc, action of, upon iodide of methyl, 427. Zineamylium, 436. Zincethylium, 436. Zincmethylium, 427. PRESENTS RECEIVED BY THE ROYAL SOCIETY, WITH THE NAMES OF THE DONORS. From November 1851 to June 1852. PRESENTS. ACADEMIES and SOCIETIES. Amsterdam:— Verhandelingen der eerste Klasse van het Koninklijk-Nederlandsche Instituut. Derde Reeks. 4de Deel. 4to. Amsterdam 1851. Tijdschrift. Afl. 1 to 4. 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BIANCONI (J. J.) De Origine caloris in aquis Thermalibus considerationes quaedam. 4to. Bonon. 1850. Specimina Zoologica Mosambicana, &c. Fasc. I to 3. 4to. Bonon. 1850. BIDDER (Dr. F.) und SCHMIDT (Dr. C.) Die Verdauungssaefte und der Stoffwechsel. Eine Physiologisch-chemische Untersuchung 8vo. Milan und Leipzig 1852. BISHOP (G.) Astronomical Observations taken at the Observatory, South Villa, Inner Circle, Regent's Park, London, during the years 1839–1851. 4to. London 1852. BLAIR (D.) On the Local Origin of the Yellow Fever Epidemic of British Guiana, &c. 8vo. DONORS. The High School of Utrecht. The Publishers. Dépôt de la Marine. S. C. Hall, Esq. The Editor. The Publisher. Dr. Lankester. The Author. The Author. The Authors. The Author. The Author. The Author. The Author. The Author. The Author. Dr. J. Davy, F.R.S. PRESENTS. BOURNE (J.) A Treatise on the Screw Propeller. Part I. 4to. London 1851. The Author. BRODIE (Sir B. C.) Physiological Researches. 8vo. London 1851. The Author. BURG (Adam.) Compendium der populären Mechanik und Maschinenlehre. Zweite Auflage. 8vo. Wien 1849. Supplement-Band 1850 mit Kupfertafeln. Oblong 4to. BURT (T. S.) A Metrical Epitome of the History of England prior to the reign of George the First. 8vo. London 1852. The Author. CALLAUD (C.) Etudes sur l’Amendement des Terres. 8vo. 1851. The Author. CHEVREUL (M. E.) Première Note sur quelques propriétés du Bleu de Prusse. 4to. Paris 1850. Sur la Présence du Plomb à l’état d’Oxyde ou de Sel, dans divers produits artificiels. 4to. Recherches chimiques sur la Teinture, 6me Mém. 4to. Paris 1844. Sur une classe particulière de mouvements musculaires. 4to. De la nature et de la cause des Taches qui se produisent sur des Etoffes de laine, &c. 4to. Considérations sur la reproduction, &c. des Images gravées, dessinées, ou imprimées. 4to. Recherches expérimentales sur la Peinture à l’huile. 4to. Paris 1850. CONDER (F. R.) The Geognostic Pendulum; or, an Inquiry into the Theory of the Pendulum Experiment. 8vo. London 1851. The Author. Letter to the President of the Royal Society on the Rotation of the Pendulum. 8vo. 1851. CULL (R.) Remarks on the Nature, Objects and Evidences of Ethnological Science. 8vo. London 1851. The Ethnological Society. DANA (J. D.) On the Classification of the Cancroidea. 8vo. 1851. The Author. DARWIN (C.) A Monograph on the Fossil Lepadidae, or Pedunculated Cirripedes of Great Britain. 4to. London 1851. The Author. DAUBENY (C. G. B., Dr.) On the Nomenclature of Organic Compounds, &c. 8vo. London 1851. The Author. On the Variation in the relative Proportion of Potash and Soda present in certain samples of Barley, grown in plots of ground artificially impregnated with one or other of these alkali. 8vo. DAUSSY (M.) Table des Positions Géographiques des principaux lieux du Globe, pour 1854. 8vo. The Author. DE LA BECHE (Sir H. T.) 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Mémoire sur un cas particulier de l'Equilibre des Liquides. Première partie. 4to. ELLIOTT (Capt. C. M.) Meteorological Observations made at the Hon. East India Company's Magnetical Observatory at Singapore, in the years 1841-1845. ENCKE (J. F.) Berliner Astronomisches Jahrbuch für 1854. 8vo. Berlin 1851. ENGLISH (H.) The Mining Manual and Almanac for 1851. 8vo. London 1851. ESDAILE (J.) The Introduction of Mesmerism as an Anæsthetic and Curative Agent into the Hospitals of India. 8vo. Perth 1852. ESENBECK (C. G. N. von.) Vergangenheit und Zukunft der Kaiserlichen Leopoldinisch-Carolinischen Akademie der Naturforscher. 4to. Breslau 1851. ESHRICHT (D. F.) On the Gangetic Dolphin. Translated from the Danish by Dr. Wallich, F.R.S. 8vo. FAYET (M. P.) Observations sur la Statistique Intellectuelle et Morale de la France. 8vo. Paris 1852. FERRARIO (G.) Cenni Storici e Regolamento della Accademia Fisio-Medico-Statistica di Milano. 8vo. Milano 1846. Sul mezzo per compiere l'ordinamento della Statistica, &c. 8vo. Milano 1851. Morti apparenti, Inumazioni precipitate, &c. &c. 8vo. Milano 1842. Storia Documentata sulla proposta Statistica Clinica. 8vo. Milano. Sull' utilità della Vaccinazione e Rivaccinazione, &c. 8vo. Milano. Ottava Congresso degli Scienziati Italiani. 8vo. Statistica Medica di Milano. Fascic. 7 to 16. Vol. II. 8vo. FORBES (Edward.) The Relations of Natural History to Geology and the Arts. A Lecture, &c. 8vo. London 1851. FOSTER and WHITNEY. Geological Report on the Copper Lands of Lake Superior Land District, Michigan. 8vo. Washington 1850. FRITSCH (K.) Grundzuge einer Meteorologie für den Horizont von Prag. 4to. Prag 1850. GASC (F.) Education in England, &c. 8vo. London 1852. GERLING (Prof.) Magnetische Deklinationen veränderungen zu Marburg, 1850. Two sheets. MDCCCLII. DONORS. The Author. The Provincial Society, Utrecht. The Author. The Author. The Author. The Directors, East India Company. The Observatory. The Editor. The Author. The Academy. The Translator. The Author. The Author. The United States Government. The Observatory, Prague. The Author. The Author. PRESENTS. GOULD (B. A.) Report on the History of the Discovery of the Planet Neptune. 8vo. Washington 1850. GRIFFITH (W.) Palms of British East India: arranged by John McClelland. fol. Calcutta 1850. HARE (R.) The Whirlwind Theory of Storms. 8vo. HEDLEY (J.) A Practical Treatise on the Working and Ventilation of Coal-mines, &c. 8vo. London 1851. HENDERSON (Thomas.) Astronomical Observations made at the Royal Observatory, Edinburgh. Reduced and Edited by C. P. Smyth. 4to. Edinburgh 1852. HENFREY (A.) The Vegetation of Europe, its Condition and Causes. 8vo. London 1851. ——— On the Reproduction and supposed Existence of Sexual Organs in the higher Cryptogamous Plants. 8vo. London 1852. HOMOLLE et QUEVENNE (MM.) Mémoires sur la Digitaline. 8vo. Paris 1851. HOPKINS (W.) On the Causes which may have produced Changes in the Earth's superficial Temperature. 8vo. London 1852. HUNT (R.) On the importance of cultivating habits of Observation. 8vo. London 1851. JELINEK (K.) Beiträge zur Construction selbstregistrierender Meteorologischer Apparate. 8vo. ——— Ueber den täglichen Gang der Vorzüglichsten Meteorologischen Elemente, u.s.w. fol. Wien 1850. JEWETT (C. C.) Notices of Public Libraries in the United States of America. 8vo. Washington 1851. JOURNALS:— Astronomische Nachrichten. Nos. 666 to 677; 762 to 793; 795 to 809. Journal of the Indian Archipelago. Nos. 3 to 12. Vol.V. Nos. 1 and 2. Vol. VI. 1851–52. The American Journal of Science and Arts. Nos. 33 to 39. Vols.XI.to XIII. 8vo. The Art Journal. November 1851 to June 1852. The Athenæum. June to December 1851; January to May 1852. The Builder. Parts 7 to 12. Vol. IX. 1851. Parts 1 to 5. Vol. X. 1852. The Philosophical Magazine, Nos. 6 to 12. 1851. Nos. 1 to 5. 1852. KING (Hon. T. B.) Report on California. 8vo. Washington 1850. KOKSCHAROFF (N. v.) Zur Krystallographie des Pyrochors, Granats und Kaemmererits. 8vo. St. Petersburg 1850. ——— Einige Notizen über das Krystallsystem des Chioliths. 8vo. 1851. ——— Ueber Krystalle des Chlorits von Achmatowsk im Ural. 8vo. 1851. KREIL (K.) Magnetische und Geographische Ortsbestimmungen in Oesterreichischen Kaiserstaate. 4th Jahrgang. 4to. Prag 1851. KREIL and JELINEK. Magnetische und Meteorologische Beobachtungen zu Prag. Zehnter Jahrgang, 1849. 4to. Prag 1851. KRUSE (F. C. H.) Chronicum Nortmannorum, Wariago-Russorum, neenon Danorum, Sveonum, Norwegorum, &c. 4to. Hamburgi et Gothæ 1851. DONORS. The Smithsonian Institution. The Directors of the East India Company. The Author. The Author. The Observatory, Edinburgh. The Author. Sir H. T. De la Beche. The Author. Observatory at Prague. The Smithsonian Institution. The Observatory, Altona. The Editor. The Editors. The Editor. The Editor. Richard Taylor, Esq. United States Government. The Author. The Observatory, Prague. The Author. PRESENTS. KUNES (Adalb.) Uebersicht der Meteorologischen Beobachtungen. KUPFFER (A. J.) Annales de l'Observatoire Physique Central de Russie. Année 1847. 4to. St. Pétersbourg 1850. Annales de l'Observatoire Physique Central de Russie. Année 1848. 4to. St. Pétersbourg 1851. Correspondance Météorologique, &c. 4to. St. Pétersbourg 1851. Compte Rendu Annuel addressé à M. le Comte Wrontchenko. Année 1850. 4to. St. Pétersbourg 1851. LAINÉ (M.) Guérison des Pommes de Terre malades. 8vo. LAMONT (Dr.) Beschreibung der an der Münchener Sternwarte zu den Beobachtungen verwendeten neuen Instrumente und Apparate. 4to. München 1851. Beobachtungen des Meteorologischen Observatoriums auf dem Hohenpeissenberg von 1792–1850. 8vo. München 1851. LEA (Isaac.) On the Genus Acostea of D'Orbigny, a Freshwater Lamellibranchia. 4to. Philadelphia 1851. Observations on the Genus Unio, &c. Vol. IV. 4to. Philadelphia. LEA (J.) and (H. C.) Description of a new Genus of the Family Melaniana, &c. LEA (H. C.) Catalogue of the Tertiary Testacea of the United States. 8vo. Philadelphia 1848. LEA (T. J.) Catalogue of the Plants of Cincinnati. 8vo. Philadelphia 1849. LITTRROW (C. L. von.) Annalen der K. K. Sternwarte in Wien. Band XIV. 4to. Wien 1851. Annalen der K. K. Sternwarte in Wien. Dritter Folge, Erster Band. 8vo. Wien 1851. LLOYD (J. A.) Papers relating to Proposals for establishing Colleges of Arts and Manufactures, &c. 8vo. London 1851. LONGSTRETH (M. F.) On the Accuracy of the Tabular Longitude of the Moon. 4to. 1851. McCOY (F.) Description of the British Palaeozoic Fossils in the Geological Museum of the University of Cambridge. MACLEAR (T.) Contributions to Astronomy and Geodesy. 4to. London 1851. McWILLIAM (Dr. J. O.) Observations on that portion of the Second Report on Quarantine by the General Board of Health which relates to the Yellow Fever Epidemy on board H.M.S. Eclair, &c. 8vo. London 1852. MANTELL (G. A.) Petrifications and their Teachings. 8vo. London 1851. Notice of the Discovery by Mr. Walter Mantell, in the Middle Island of New Zealand, of a living specimen of the Notornis. 4to. London 1852. and BRICKENDEN (Capt. L.) On the Fossil Remains of Reptiles, and on Chelonian Foot-tracks, &c. 8vo. London 1852. MAPS, CHARTS, &c.: Map of Discoveries in the Arctic Sea up to 1851. Map showing the Time kept by Public Clocks in various Towns of Great Britain. DONORS. The Observatory, Vienna. The Russian Government. The Author. The Observatory, Munich. The Author. The Observatory, Vienna. The Author. Rev. A. Sedgwick, F.R.S. The Admiralty. The Admiralty. Messrs. Ellis and Sons. MAPS, CHARTS, &c. (continued) Thirty-one Charts and Sketches published by the American Coast Survey. Topographical Map of London and its Environs; by R. W. Mylne, Esq. 1851. Trade-Wind Chart of the Atlantic Ocean. One Sheet. 1851. Twenty-six Maps and Charts. MARTINS (C.) On the marks of Glacial Action on the Rocks in the Environs of Edinburgh. 8vo. Edinburgh 1851. MAURY (Lieut. M. F.) Astronomical Observations made during the year 1846 at the National Observatory. Vol. II. 4to. Washington 1851. Investigations of the Winds and Currents of the Sea. 4to. Washington 1851. MENDOZA Y RIOS (José de.) Colleccion completa de Tablas para los usos de la Navegacion y Astronomia Nautica. Primera Tirada. 4to. Madrid 1850. MIGNARD (M.) Monographie du Coffret de M. le duc de Blacas. 4to. Paris 1852. Notice sur un Mémoire relatif aux Pratiques occultes des Templiers. 8vo. MILITZER (Dr.) Tafeln zur Reduction gemessner Gasvolumina auf die Temperatur 0° und den Luftdruck 760mm. 8vo. Vienna 1851. MISCELLANEOUS, &c.: Bust in Plaster of the late Jens Christian Oersted. MONTRIOU (C. W.) Observations made at the Magnetical and Meteorological Observatory at Bombay, for the year 1847, and for the year 1848. Part 2. Met. Obs. fol. Bombay 1851. NAMIAS (Giacinto.) Sopra la comparsa del Morbo migliare in Venezia, &c. 8vo. Di una specie d'Atrofia della Midolla Spinale. 8vo. Storia di un Tumore felicemente curato con le emulsioni Iodate, &c. 8vo. Sopra alcuni Effetti dell' Atropina e del Solfato di Veratrina. 8vo. Venezia 1851. NEWPORT (G.) On the Impregnation of the Ovum in the Amphibia. First Series. 4to. London 1851. OTTAVI (J.) L'Urne. Recueil des Travaux, &c. 8vo. Paris 1843. OWEN (D. D.) Report of a Geological Reconnaissance of the Chippewa Land District of Wisconsin and the Northern part of Iowa. 8vo. Washington 1848. PARAVEY (— de.) Du Pays primitif du ver-a-soie. 8vo. Paris 1851. PERCY (J.) On the Importance of Special Scientific Knowledge to the Practical Metallurgist. 8vo. London 1852. PLANTAMOUR (E.) Résumé des Observations Thermométriques et Barométriques faites à l'Observatoire de Genève et au Grand St. Bernard. 4to. Genève 1851. PLAYFAIR (Dr. Lyon.) On the National Importance of Studying Abstract Science, &c. 8vo. London 1851. Donors: The United States Government. Lieut. Maury. The Author. Dépôt de la Marine. The Author. The United States Government. The Author. The Observatory. The Author. The Academy at Vienna. R. Westenholz, Esq., per Dr. Wallich. East India Company. The Author. Sir H. T. De la Beche. The Author. Sir H. T. De la Beche. PRESENTS. POISSON (S. D.) Mémoire sur les Apparences des corps lumineux en repos ou en mouvement. 4to. Paris. Mémoire sur l'Equilibre et le Mouvement des Corps Cristallisés. 4to. Paris. PORTRAITS:— Calotype Portrait of Mons. J. B. Biot. Engraved Portrait of Leonard Euler of Basil, 1851. Lithograph Portrait of J. E. Gray, Esq., F.R.S. PYCROFT (J. W.) Letter to Sir R. H. Inglis, Bart., on Legislative Incorporation, &c. 8vo. London 1851. RAMCHUNDRA. A Treatise on Problems of Maxima and Minima, solved by Algebra. 8vo. Calcutta 1850. RAMSAY (A. C.) On the Science of Geology and its Applications. 8vo. London 1852. RASELLI (A. L.) Non plus ultra delle Matematiche. 8vo. Milano 1850. RENNIE (Sir J.) The Theory, Formation and Construction of British and Foreign Harbours. Parts 8 to 15. fol. London 1851–52. ROBINSON (Rev. T. R.) Description of an Improved Anemometer, &c. 4to. Dublin 1851. ROGET (Dr. P. M.) Thesaurus of English Words and Phrases, classified and arranged so as to facilitate the expression of Ideas and assist in Literary Composition. 8vo. London 1852. SABINE (Col. E.) Observations made at the Magnetical and Meteorological Observatory at Hobarton. Vol. II. 4to. London 1852. Observations made at the Magnetical and Meteorological Observatory at the Cape of Good Hope. 4to. London 1851. SCARPELLINI (E. F.) Sopra i Lavori Chimico-Farmaceutici del Professore Pietro Peretti. 8vo. Roma 1850. SCHAFHÄUTL (Dr.) Geognostische Untersuchungen des südbayerischen Alpengebirges. 8vo. München 1851. SEM (Jules.) Ce que c'est que la Lune. 8vo. Paris 1851. SHARP (Granville.) 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DONORS. H. Stevens, Esq. R. Cole, Esq. The Author. The Author. The Author. The Provincial Society, Utrecht. The Author. The Author. The Author.