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  "text": "The only official reprint\nauthorized by\nThe Royal Society of London\nPHILOSOPHICAL TRANSACTIONS,\nGIVING SOME ACCOUNT OF THE Present Undertakings, Studies, and Labours, OF THE INGENIOUS, IN MANY Considerable Parts of the WORLD.\n\nVOL. XLIV. PART I. For the Year 1746.\n\nLONDON:\nPrinted for C. DAVIS, over-against Gray's Inn-Gate in Holbourn; PRINTER TO THE ROYAL SOCIETY M. DCC. XLVIII.\nSACRATISSIMO\nPOTENTISSIMO ET SERENISSIMO\nPRINCIPI AC DOMINO\nFRANCISCO\nELECTO\nROMANORVM IMPERATORI\nPIO FELICI\nSEMPER AVGUSTO\nGERMANIAE ET\nHIEROSOLYMITARVM REGI\nLOTHARINGIAE ET BARRAE DVCI\nMAGNOQUE DVCI HETRVRIAЕ\nETC. ETC. ETC.\nREGALIS SOCIETATIS LONDINI\nPRO SCIENTIA NATURALI PROMOVENDA\nSODALI\nQVOD FASTOS EIUS ILLUSTRISSIMO NOMINE\nET COETVS PRAESSENTIA SVA\nCONDECORAVIT\nVOLUMEN HOC XLIV\nACTORVM PHILOSOPHICORVM\nVT SUMMI OBSEQVII\nET OBSERVANTIAE TESSERAM\nD. D. D.\nSACRAE MAIESTATIS EIUS\nCVLTOR DEVOTISSIMVS\nCROMWELL MORTIMER M.D.\nREGALIS SOCIETATIS SECRETARIUS\nCOLLEGII MEDIC. LONDON. SOCIVS\nREGIAE ACADEMIAE SCIENT. PARISIIS\nAD COMMERC. LITT. ADSCRIPTVS.\nREGIAEQUE SCIENT. ET LITT. ACAD.\nBORVSS. SODALIS.\nLondini Idibus Decembr. MDCCXLVIII.\nPHILOSOPHICAL TRANSACTIONS.\n\nFor the Months of January and February, 1746.\n\nThe CONTENTS.\n\nI. Part of a Letter from Mr. Wm. Arderon, F.R.S. to Mr. Baker, F.R.S. containing a Description of a Water-Wheel for Mills, invented by Mr. Philip Williams. With an Extract of a Letter from the Rev. Dr. Samuel Salter to Mr. Arderon, concerning the Bark preventing catching Cold. Page 1.\n\nII. A Third Account of the Distemper among the Cows; by C. Mortimer, M.D. Fellow of the Royal College of Physicians, and Secretary of the Royal Society, London. P. 4.\n\nIII. De Diaphragmate fiso, &c mutatis quorundam Viscerum Sedibus, in Cadavere Puella decem Mensium observatis, Epistola Johannis Fothergill M.D. ad Richardum Mead. P. 11.\n\nIV. A Letter from Mr. Wm. Arderon, F.R.S. to Mr. Baker, F.R.S. on keeping of small Fish in Glass Jars: And of an easy Method of catching Fish. P. 23.\n\nV. Extracts of two Letters from the Reverend Henry Miles, D.D. & F.R.S. to Mr. Henry Baker, F.R.S. concerning the Effects of a Cane of black Sealing-wax, and a Cane of Brimstone, in electrical Experiments. P. 27.\n\nVI. A remarkable Case of a Person cut for the Stone in the new Way, commonly called the lateral; by William Chefselden, Esq; Surgeon to Her late Majesty; communicated to Martin Folkes, Esq; Pr.R.S. by Mr. Reid, Surgeon at Chelsea, who attended the Cure. P. 33.\n\nVII. The Effects of the Lixivium Saponis, taken inwardly by a Man aged 75 Years, who had the Stone, and in whose Bladder, after his Death, were found Two hundred and fourteen Stones: From William Chefselden, Esquire. P. 36.\nThe CONTENTS.\n\nVIII. Further Experiments and Observations, tending to illustrate the Nature and Properties of Electricity: By William Watson, Apothecary, F. R. S. p. 41.\n\nIX. A Description of a curious Sea-Plant; Frutex marinus Flabelliformis cortice verrucoso obductus. Doodii. Raii Hist. Tom. III. p. 7. & Synopsis. Edit. 3. p. 32. Coralloides granulosa alba. J. B. Tom. III. pag. 809. Erica marina alba frutescens. Mus. Pet. 50. Keratophyton Flabelliforme, cortice verrucoso obductum. Raii Synopsis. Edit. 3. p. 32. By Sir Hans Sloane, Bart. M. D. late President of the Royal Society, and of the College of Physicians, Lond. &c. p. 51.\n\nX. Extracts of two Letters from the Reverend Henry Miles, D.D. & F.R.S. to Mr. Henry Baker, F. R. S. containing several Electrical Experiments. p. 53.\n\nXI. Part of a Letter from Mr. Abraham Trembley, F. R. S. to Martin Folkes, Esq.; Pref. R. S. concerning the Light caused by Quicksilver shaken in a Glass Tube, proceeding from Electricity. p. 58.\n\nXII. A Letter from Mr. John Hill, Apothecary, to the President, concerning the Manner of the Seeding of Mottes; and in particular of the Hypnum terrestre, trichoides, luteovirens, vulgare, majus, capitulis erectis. Raii Synopsis. Ed. 3. pag. 84. p. 60.\n\nXIII. A Letter from Mr. James Sherwood, Surgeon, to Martin Folkes, Esq.; President of the Royal Society, concerning the minute Eels in Paste being viviparous. p. 67.\n\nXIV. Some Observations on the Cancer Major, by Mr. Peter Collinson, F. R. S. p. 70.\n\nXV. A remarkable Instance of the happy Effect of Musk, in a very dangerous Case; by James Parsons, M. D. F. R. S. p. 75.\n\nXVI. Part of a Letter from the Rev. Dr. Miles, F.R.S. to Mr. Henry Baker, F. R. S. concerning Electrical Fire. p. 78.\n\nXVII. An Account of a Book, intitled, De quamplurimis Phoiphoris nunc primum detectis Commentarius. Authore Jac. Barthol. Beccario, R. S. Lond. S. Bononiæ, 1744. 4to. Extracted and translated from the Latin by W. Watson. F. R. S. p. 81.\n\nXVIII. A Letter from the Reverend Dr. Miles, F. R. S. to Mr. Baker, F. R. S. concerning the Electricity of Water. p. 91.\n\nPrinted for C. Davis, over-against Gray's-Inn Gate in Holbourn, Printer to the Royal Society, M.DCC.XLV.\nPHILOSOPHICAL TRANSACTIONS.\n\nFor the Months of March and April, 1746.\n\nThe CONTENTS.\n\nI. Extract of a Letter from Mr. William Arderon, F. R. S. to Mr. Henry Baker, F. R. S. with the Description of an improved Hygroscope. page 95\n\nII. A Letter from —— to Mr. John Ellicot, F. R. S. of weighing the Strength of Electrical Effluvia. p. 96.\n\nIII. Extracts of Two Letters from Mr. Tho. Knowlton to Mr. Mark Catesby, F. R. S. concerning the Situation of the ancient Town Delgovicia; and of two Men of an extraordinary Bulk and Weight. p. 100.\n\nIV. Principia Dynamica, sive Principia Mechanices Metaphysica; Auctore Jacobo Jurin, M. D. R. S. S. p. 103.\n\nV. An Account of Two extraordinary Deers Horns, found under-ground in different Parts of Yorkshire; in a Letter from Mr. Tho. Knowlton to Mr. Mark Catesby, F. R. S. p. 124.\n\nVI. The Phenomena of Venus, represented in an Orrery made by Mr. James Ferguson, agreeable to the Observations of Signore Bianchini. p. 127.\nThe CONTENTS.\n\nVII. A Machine for founding the Sea at any Depth, or in any Part, invented by Major Wm. Cock in the Year 1738. in a Voyage to Georgia. p. 146.\n\nVIII. A Letter from Mr. J. Brcintal to Mr. Peter Collinson, F. R. S. containing an Account of what he felt after being bit by a Rattle-Snake. p. 147.\n\nIX. A Letter from R. Badcock, Esq; to Mr. Henry Baker, F. R. S. containing some Microscopical Observations on the Farina fæcundans of the Holly-hock and the Passion-Flower. p. 150.\n\nX. Part of two Letters from the Rev. Henry Miles, D.D. & F. R. S. to Mr. Henry Baker, F. R. S. containing some Electrical Observations. p. 158.\n\nXI. An Extract of a Philosophical Account of a new Opinion concerning the Origin of Petrifications found in the Earth which has been hitherto ascribed to the universal Deluge, &c. of Signore Anton. Lazzaro Moro. p. 163.\n\nXII. Further Observations and Experiments on the Passion-Flower, and its Farina, by Mr. Badcock, communicated by Mr. Henry Baker, F.R.S. p. 166.\n\nXIII. Part of a Letter from Mr. Wm. Arderon, F. R. S. to Mr. Henry Baker, F. R. S. concerning an Improvement of the Weather-Cord. p. 169.\n\nXIV. A Description of a Clepsydra or Water Clock, by the Hon. Charles Hamilton, Esq;. p. 171.\nPHILOSOPHICAL TRANSACTIONS.\n\nFor the Months of May and June, 1746.\n\nThe CONTENTS.\n\nI. An Observation of an Operation made by the high Apparatus, according to M. le Cat's Method, in the Year 1743; by Claud. Nic. le Cat, M.D. F.R.S. Page 175.\n\nII. The Description of an Hygrometer made of a Deal Rod; by W. Arderon, F.R.S. p. 184.\n\nIII. A Letter from Ric. Badcock, Esq; to Mr. Henry Baker, F. R. S. concerning the Farina foecundans of the Yew-Tree. p. 189.\n\nIV. An Account of a Bristle that was lodged in a Gentleman's Foot, and caused a violent Inflammation; from W. Arderon, F.R.S. p.192.\n\nV. Some Observations on the Spina ventosa; by the late Claud. Amyand, Esq; F.R.S. p.193.\n\nVI. An Extract of a Letter from Mr. John Henry Winkler, to a Friend in London; concerning the Effects of Electricity upon Himself and his Wife. p. 211.\n\nVII. A Catalogue of the Fifty Plants from Chelsea Garden, presented to the Royal.\nThe CONTENTS.\n\nROYAL SOCIETY by the Company of Apothecaries for the Year 1744. p. 213.\n\nVIII. Part of a Letter from Mr. George Howell, Surgeon, at Haverfordwest, to Mr. W. Watson, F.R.S. concerning the extracting a large Stone by an Aperture in the Urethra. p. 215.\n\nIX. A Letter from Robert Southwell, Esq; to Mr. Henry Oldenburg, concerning some extraordinary Ecchoes, lately communicated to the Royal Society by the Reverend Henry Miles, D.D. & F.R.S. p. 219.\n\nX. A Letter from Mr. J. Durant to the Honourable Robert Boyle, Esq; F.R.S. concerning a Coal-Mine taking Fire near Newcastle upon Tyne; of the blue Well; and of a subterraneous Cavern in Weredale. p. 221.\n\nXI. A Letter from James Parsons, M.D.F.R.S. to the President; serving to introduce a Remark from John Milner, Esq; concerning the burying of the Cows, dead of the present reigning Distemper, in Lime or not. p. 224.\n\nXII. Critical Observations concerning the Oenanthe aquatica, succo viroso crocante of Lobel; by Mr. W. Watson, Apothecary, F.R.S. p. 227.\n\nXIII. A Letter to Mr. B. Robins, F.R.S. shewing that the Electricity of Glass disturbs the Mariners Compass, and also nice Balances. p. 242.\nPHILOSOPHICAL TRANSACTIONS.\n\nFor the Months of Oct. Nov. and Dec. 1740.\n\nThe CONTENTS.\n\nI. Extract of a Letter from Mr. Turbervill Needham to Martin Folkes, Esq; Pr. R. S. concerning some new Electrical Experiments lately made at Paris. p. 247.\n\nII. Via Cometæ, qui ab Initio Martii 1742. usque ad Initium Aprilis apparuit, ex Obs. in Observatorio et Coll. Patrum S. Jesu Pekini Sinarum habitis deducta, et sec. Æquatorem ac Eclipticam, uti et ad propriam ejus Orbitam supputata. Cum Soc. Reg. communicavit J. Hodgson, R. S. S. et Schol. Reg. Mathemat. Præceptor in Ædibus Christi, Londini. p. 264.\n\nIII. Of the various Genera and Species of Music among the Ancients, with some Observations concerning their Scale; in a Letter from J. C. Pepulch, Music. D. & F.R.S. to Mr. Abr. de Moivre, F.R.S. p. 266.\n\nIV. Extract of a Letter from Mr. W. Arderon, F.R.S. to Mr. H. Baker, F.R.S. containing Observations\nThe CONTENTS.\n\nObservations on the Precipices or Cliffs on the N.E. Sea-Coast of Norfolk. p. 275.\n\nV. A Letter from Peter Templeman, M.D., to Wm. Battie, M.D. Fellow of the Royal College of Physicians, London, and F.R.S. concerning a Polypus at the Heart, and a Scirrhous Tumour of the Uterus. p. 285.\n\nVI. Extract of a Memoir concerning the Communication of Electricity; read at the public Meeting of the Royal Acad. of Sciences at Paris, Nov. 12. 1746. by M.le Monnier jun. M.D. of that Acad. and F.R.S. p. 290.\n\nVII. An Account of a very large Stone, found in the Colon of a Horse; and of several Stones, which were taken from the Intestines of a Mare; with some Experiments and Observations thereupon, by Edward Bailey, M.D. of Havant in Hampshire. p. 296.\n\nVIII. A Letter from Mr. James Simon, of Dublin, to Martin Folkes, Esq.; Pr. R. S. concerning the Petrifications of Lough-Neagh in Ireland: To which is annexed a Letter from the Right Rev. Dr. George Berkeley Lord Bishop of Cloyne to Tho. Prior, Esq.; p. 305.\n\nIX. Some Observations on a sort of Libella or Ephemeron, by Mr. Peter Collinson, F.R.S. p. 329.\nTO\n\nMARTIN FOLKES, Esq; LL.D.\n\nPRESIDENT,\n\nAND TO THE\n\nCOUNCIL and FELLOWS\n\nOF THE\n\nROYAL SOCIETY,\n\nTHIS TREATISE, Intituled,\n\nHUMAN PHYSIOGNOMY Explain'd, &c.\n\nIs humbly Dedicated,\n\nBy their Most Obliged,\n\nHumble Servant,\n\nJames Parsons.\nPHILOSOPHICAL TRANSACTIONS,\nGIVING SOME ACCOUNT OF THE Present Undertakings, Studies, and Labours, OF THE INGENIOUS, IN MANY Considerable Parts of the WORLD.\n\nVOL. XLIV. PART II. For the Year 1747.\n\nLONDON:\nPrinted for C. DAVIS, over-against Gray's Inn-Gate in Holbourn; PRINTER to the ROYAL SOCIETY.\n\nM. DCC. XLVIII.\nPHILOSOPHICAL TRANSACTIONS.\n\nFor the Months of January and February, 1747.\n\nThe CONTENTS.\n\nI. A Letter from Mr. Wm. Fidge, Surgeon, to C. Mortimer, Sec. R. S. concerning a Stone taken out of the Bladder of a Dog, with a Piece of Dog-Grass in its Center. p. 335.\n\nII. An uncommon Dropsy from the Want of a Kidney; and a large Saccus that contain'd the Water; by Samuel Glass, Surgeon, sent to Dr. Mead. p. 337.\n\nIII. An Explanation of an ancient Inscription at Rochester, upon the Roman Wall, 1744; by John Taylor, LL.D. and Chancell. of Lincoln. p. 344.\n\nIV. An Abstract of the Rev. Mr. Gould's Account of English Ants; by the Rev. Henry Miles, D.D. and F. R. S. p. 351.\n\nV. A Remark on F. Hardouin's Amendment of a Passage in Pliny's Nat. Hist. Lib. II. § 74. by Martin Folkes, Esq. P.R.S. p. 365.\n\nVI. A Letter from the Rev. Mr. Mason, Woodward. Prof. at Cambridge, and F. R. S. to the Pr. R. S. concerning Spelter, Melting Iron with Pit-coal, and a burning Well at Broseley. p. 370.\n\nVII. Part of a Letter from Mr. John Browning, of Bristol, to Mr. Henry Baker, F.R.S. concerning the Effect of Electricity on Vegetables. p. 373.\n\nVIII. Mercurius sub Sole visus in Specula astronomica Acad. Gießensis, 5 Nov. 1743. a Christiano Lud. Gersten, Math. Prof. et R.S. Lond. Sod. p. 376.\n\nIX. Observations upon so much of M.le Monnier jun.'s Memoir, lately presented to the R.S. as relates to the\nPHILOSOPHICAL TRANSACTIONS.\n\nFor the Months of March, April, and May, 1747.\n\nThe CONTENTS.\n\nI. Of Birds of Passage, by Mr. Mark Catesby, F. R. S. 435.\n\nII. A Letter from Mr. John Freke F. R. S. Surgeon to St. Bartholomew's Hospital, to the President of the Royal Society, inclosing a Paper of the late Rev. Mr. Creed, concerning a Machine to write down Extemporaneous Voluntaries, or other Pieces of Music. 445.\n\nIII. The Figure of the Mustela fossilis; communicated from Dr. Gronovius at Leyden to Mr. Peter Collinson, F. R. S. 451.\n\nIV. Some Observations on the Belluga-Stone, by Mr. Peter Collinson, F. R. S. ibid.\n\nV. An Observation on an Occultation of Cor Leonis by the Moon, on Thursday, March 12. 1747, in Surrey-Street in the Strand, London, with a reflecting Telescope, made by Mr. Short, F. R. S. which magnified about 100 times; communicated to the Royal Society by J. Bevis, M.D. 455.\nThe CONTENTS.\n\nVI. An Observation of an uncommon Gleam of Light proceeding from the Sun, by Mr. Peter Collinson F.R.S. 456.\n\nVII. Extract of a Letter from Mr. Benjamin Cooke F.R.S. to Mr. Peter Collinson F.R.S. concerning the Property of new Flanel sparkling in the dark. 457.\n\nVIII. A Letter from Mr. John Hill, Apothecary, to the President, concerning Windsor Loam. 458.\n\nIX. A Letter from Mr. Rob. Lucas, concerning the Relief he found in the Stone from the Use of Alicant Soap and Lime-Water, to the Rev. Mr. Richard Lucas F.R.S. 463.\n\nX. The Figures of some very extraordinary calculous Concretions formed in the Kidney of a Woman; communicated by Mr. Charles Lucas at Dublin. 465.\n\nXI. Part of a Letter from Mr. William Arderon F.R.S. to Mr. Henry Baker F.R.S. concerning the Formation of Pebbles. 467.\n\nXII. A Letter from Arthur Dobbs Esq; of Castle-Dobbs in Ireland, to the Rev. Mr. Charles Wetstein, Chaplain and Secretary to His Royal Highness the Prince of Wales, concerning the Distances between Asia and America. 471.\n\nXIII. A Letter from the Rev. Mr. G. Cof-\nThe CONTENTS.\n\ntard, to the Rev. Thomas Shaw, D.D.\nF.R.S. and Principal of St. Edmund-\nHall, concerning the Chinese Chronology\nand Astronomy. 476.\n\nXIV. Part of a Letter from Mr. Tur-\nberville Needham to James Parsons M.D.\nF.R.S. of a new Mirror, which burns at 66\nFeet Distance, invented by M. de Buffon\nF.R.S. and Member of the Royal Academy\nof Sciences at Paris. 493.\n\nXV. Extract of a Letter from the Marquis\nNicolini F.R.S. to the President, concern-\ning the same Mirror burning at 150 Feet\nDistance. 495.\n\nXVI. Epistolae Jo. Henrici Winkleri, Prof.\nLips. & R.S. Lond. S. ad Societatem Re-\ngalem Londinensem data, quae continet\nDescriptionem & Figuras Pyrorgani sui\nElectrici. 497.\n\nXVII. Some Observations upon Gems or Pre-\ncious Stones; more particularly such as the\nAncients used to engrave upon, by Robert\nDingley, Esq;. 502.\n\nXVIII. Quadrantis Astronomici Muralis Idea\nnova et peculiaris, multis incommodis qui-\nbus hucusque usitati laborant liberati, Au-\ntore Chr. Ludovic. Gersten, R.S.L.S. 507.\n\nXIX. Observationes dua Alberti Haller, Prof.\nMed.\nThe CONTENTS.\n\nMed. Gotting. R. S. S. Lond. S. de Fabrica morbosa in Cadaveribus reperta. 527.\n\nXX. A Letter from Mr. David-Erskine Baker to the President, concerning the Property of Water Efts in slipping off their Skins as Serpents do. 529.\n\nXXI. An Improvement of the Celestial Globe, by Mr. James Ferguson. 535.\n\nXXII. The Case of a young Child, at Houghton in Huntingdonshire, born with all its Bones displaced: Communicated Febr. 8. 1746 by Mr. E. Davis, Surgeon at Huntingdon, to Dr. H. Heineken. 539.\n\nXXIII. A Dissertation on the Situation of the ancient Roman Station of Delgovitia in Yorkshire; by John Burton, of York, M. D. 541.\n\nXXIV. A Letter from Mr. Jof. Ames F.R.S. and Secr. of the Soc. Antiquar. to C. Mortimer M. D. Secr. R. S. concerning a Plica Polonica. 556.\n\nXXV. A Description of some Clay Moulds or Concaves of ancient Roman Coins found in Shropshire; by Mr. H. Baker F.R.S. 557.\n\nXXVI. An Extract of a Letter from W. Jones Esq; F.R.S. to M. Folkes Esq; President of the Royal Society; containing a commodious Disposition of Equations for exhibiting the Relations of goniometrical Lines. 560.\nPHILOSOPHICAL TRANSACTIONS.\n\nFor the Months of Octob. Nov. and Decemb. 1747.\n\nThe CONTENTS.\n\nI. Extract of a Letter dated at Rome, Aug. 5. 1747. from Mr. Hoare, a young Statury, now pursuing his Studies there, to his Brother Mr. Hoare, an eminent Painter at Bath, giving a short Account of some of the principal antique Pictures found in the Ruins of Herculaneum at Portici, near Naples: Communicated by the Rev. Mr. Birch. Page 567\n\nII. A Letter from Mr. G. Stovin to his Son, concerning the Body of a Woman, and an antique Shoe, found in a Morass in the Isle of Axholm in Lincolnshire. p. 571\n\nIII. A Letter from Mr. Henry Baker F.R.S. to the President, concerning the Grubbs destroying the Grass in Norfolk. p. 576\n\nIV. A Letter from J. Wall M.D. to Edward Wilmot M.D. F.R.S. and Physician to His Majesty, concerning the Use of the Peruvian Bark in the Small-Pox. p. 583\nThe CONTENTS.\n\nV. Postscript of a Letter from the Rev. Dr. Doddridge at Northampton, to Mr. Henry Baker F. R. S. of one, who had no Ear to Music naturally, singing several Tunes when in a Delirium. p. 596\n\nVI. A Catalogue of the Fifty Plants from Chelsea-Garden, presented to the Royal Society by the Company of Apothecaries for the Year 1745. pursuant to the Direction of Sir Hans Sloane Bart. Med. Reg. et Soc. Reg. nuper Praef. by Jos. Miller Apothecary. Hort. Chelf. Praef. et Præl. Bot. p. 597\n\nVII. A Continuation of an Account of an Essay towards a Natural History of Carolina and the Bahama Islands; by Mark Catesby F. R. S. with some Extracts out of the tenth Set, by Cromwell Mortimer Secr. R. S. p. 599\n\nVIII. An Account of the Death of the Reverend Dr. Greene, late Rector of St. George the Martyr in Queen's Square London, and one of the Prebendaries of Worcester, where he died of an Hurt received, as he was riding out in the Neighbourhood of that City, contain'd in a Letter from Tho. Cameron M.D. to the Reverend Charles Lyttelton LL.D. and F.R.S. p. 609\nThe CONTENTS.\n\nIX. A Letter from the Reverend Henry Miles D.D. to Mr. Henry Baker F.R.S., concerning the Difference of the Degrees of Cold marked by a Thermometer kept within Doors, or without in the open Air. p. 613\n\nX. An Account of a Child being taken out of the Abdomen, after having lain there upwards of 16 Years, &c. by Starkey Myddleton M.D. p. 617\n\nXI. A Physiological Account of the Case of Margaret Cutting, who speaks distinctly, tho' she has lost the Apex and Body of her Tongue: Addressed to the Royal Society, by James Parsons M.D. F.R.S. p. 621\n\nAn APPENDIX to the Forty-fourth Volume of the Philosophical Transactions; containing some Papers, which were not ready to be inserted in the Order of their Date. p. 627\n\nI. Observations upon several species of small water insects of the Polypus kind, communicated in a letter to the President, from Mr. Abraham Trembley F.R.S. p. ibid.\n\nII. A collection of the magnetical Experiments communicated to the Royal Society by Gowin Knight M.B. & F.R.S. in the Years 1746 and 1747. p. 656\nThe CONTENTS.\n\n1. An account of some magnetical Experiments, exhibited before the Royal Society on Thursday the 19th of February 1746, and of which the President, who had before seen the same performed with more deliberation on the 11th of the same month, was pleased to make the following report. ibid.\n\n2. An Account of some new Experiments lately made with Artificial Magnets, by the same. p. 662\n\n3. Some further Experiments relating to the general Phænomena of Magnetism, by the same. p. 665\n\nIII. A Discourse concerning the Usefulness of Thermometers in Chemical Experiments; and concerning the Principles on which the Thermometers now in Use have been constructed; together with the Description and Uses of a Metalline Thermometer, newly invented by C. Mortimer, M.D. Sec R.S. 672\n\nIV. A Continuation of a Paper concerning Electricity, by William Watson, F. R. S. printed in these Trans. N. 477, Article I. ending p. 501. p. 695\n\nV. A Sequel to the Experiments and Observations tending to illustrate the Nature and Properties of Electricity; in a Letter to the Royal Society from the same. p. 704\nTo the Reverend\n\nSTEPHEN HALES, D.D.\n\nFellow of the Royal Society,\n\nThese THREE LECTURES\n\nON\n\nMUSCULAR MOTION,\n\nAre humbly dedicated, as a small Acknowledgment for the many and great Advantages received from his most curious, learned, and indefatigable Researches into Nature; and for the many personal and particular Favours which he has been pleased to confer on\n\nHis Most Obedient, and\n\nMost Humble Servant,\n\nBROWNE LANGRISH.",
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