Front Matter

The only official reprint authorized by The Royal Society of London PHILOSOPHICAL TRANSACTIONS. GIVING SOME ACCOUNT OF THE Present Undertakings, Studies, and Labours, OF THE INGENIOUS, IN MANY Considerable Parts of the WORLD. VOL. XXXIX. For the Years 1735, 1736. LONDON: Printed for T. Woodward, at the Half-Moon, between the Two Temple-Gates in Fleetstreet; and C. Davis the Corner of Pater-noster-row, next Warwick-lane; PRINTERS TO THE ROYAL SOCIETY. M.DCC.XXXVIII. TO HERMAN BOERHAAVE, A.L.M. PHILOS. AND M.D. PROFESSOR OF PHYSICK IN THE UNIVERSITY OF LEYDEN, PRESIDENT OF THE COLLEGE OF CHIRURGIONS IN THAT CITY. FELLOW OF THE ROYAL SOCIETY OF LONDON, AND MEMBER OF THE ROYAL ACADEMY OF SCIENCES AT PARIS, &c. Honoured SIR, AN Address to You in English needs no Apology, since it is well known to all, who have the Happiness of an intimate Acquaintance with You, that not only the DEDICATION. English, but likewise all the other European Languages, in which any Pieces valuable for the Improvement of Learning have been published, are alike familiar to You. The Honour You have done me in communicating to the Royal Society through my Hands those curious and elaborate Experiments you made upon Quicksilver, cannot be acknowledged by me in a fitter Manner, than by dedicating to You this Thirty-ninth Volume of Philosophical Transactions: which likewise gives me an Opportunity of publickly thanking You for the many Marks of Friendship and Esteem I have received at your Hands, for the Civilities You have always shewn my Friends, and the Honour You have done me in continuing an Epistolatory Correspondence ever since I left Leyden. I reckon it a great Happiness, the having been near five Years one of your Pupils, during which Time You were so kind as to direct DEDICATION. direct and advise me in all my Studies; and I gratefully own, that it was You who first led me into those Philosophical Researches, which have since procured me the particular Favour of our Worthy President, and the great Honour conferred upon me by Him, the Council and Fellows of the Royal Society, in chusing me One of their Secretaries. Were these Volumes published in the Name of the Royal Society, they would not require the Patronage of any Particular Person; a Sanction from that Illustrious Body, which hath all along so justly been in the highest Esteem among the Learned, would be a sufficient Protection for the Publisher: But, as they contain only some of the Papers which have been read at their Assemblies, the publication of which is left to the Discretion of the Secretaries, the Editor becomes answerable for what he communicates to the Publick; therefore, as to the Share I have had in collecting and publishing these Memoirs, I beg Leave to apply to You for Protection, who are a thorough DEDICATION. thorough Judge of their Usefulness, and who have, by your universal Knowledge, deservedly obtain'd a Place in the first Rank of Learned Men. I hope You will accept this as a Token of the most sincere Respect and highest Regard, which I shall ever retain for You, being, SIR, Your most obliged, and most devoted, humble Servant, CROMWELL MORTIMER, M.D. Secretary to the ROYAL SOCIETY, and Fellow of the ROYAL COLLEGE of PHYSICIANS, LONDON. LONDON, Aug. 1. 1738. PHILOSOPHICAL TRANSACTIONS For the Months of January, Febr. and March, 1735. The CONTENTS. I. A Catalogue of the Fifty Plants, from Chelsea-Garden, presented to the Royal Society by the Company of Apothecaries, for the Year 1733. pursuant to the Direction of Sir Hans Sloane, Bart. Med. Reg. Præf. Col. Reg. Med. & Soc. Reg. by Isaac Rand, Apothecary. F. R. S. Hort. Chel. Præf. ac Prelec. Botan. II. A Catalogue of the Eclipses of Jupiter's Satellites, for the Year 1736. computed to the Meridian of the Royal Observatory at Greenwich, by James Hodgson, F. R. S. Master of the Royal Mathematical School in Christ's-Hospital, London. III. The apparent Times of such of the Immersions and Emersions of Jupiter's Satellites, as are visible at London, in the Year 1736: together with their Configurations at those Times, represented in a Plate, by the same. The CONTENTS. IV. An Account of some Observations of the Eclipses of the First Satellite of Jupiter, compared with the Tables, by the same. V. Experiments and Observations upon the Light that is produced by communicating Electrical Attraction to animal or inanimate Bodies, together with some of its most surprising Effects; communicated in a Letter from Mr. Stephen Gray, F.R.S. to Cromwell Mortimer, M.D. R.S. Secr. VI. A general Method of describing Curves, by the Intersection of Right-Lines; moving about Points in a given Plane. In a Letter to Dr. Hoadly, by the Rev. Mr. Braikenridge. VII. Extract of a Letter from M. Geoffroy, Chemist, Member of the Royal Academy of Sciences at Paris, and F.R.S. to Sir Hans Sloane, Bart. President of the Royal Society; concerning Mr. Seignette's Sal Polychorestus Rupellensis, and some other Chemical Salts. By T.S. M.D. PHILOSOPHICAL TRANSACTIONS For the Months of April, May and June, 1735. The CONTENTS. I. An Account of an Instrument or Machine for changing the Air of the Room of sick People in a little Time, by either drawing out the foul Air, or forcing in fresh Air; or doing both successively, without opening Doors or Windows. By the Revd. J.T. Desaguliers, LL.D. F.R.S. II. A Calculation of the Velocity of the Air moved by the new-invented Centrifugal Bellows of 7 Feet in Diameter, and 1 Foot thick within, which a Man can keep in Motion with very little Labour, at the Rate of two Revolutions in one Second. By the same. III. The Uses of the foregoing Machine. Communicated in a Letter to Cromwell Mortimer, M.D. R.S. Secr. Feb. 23, 1736, from the same. IV. The Case of a Cataleptic Woman. Communicated to the Royal Society by Richard Reynell, Apothecary, London. V. Some The CONTENTS. V. Some Thoughts on the Operation of the Fistula lacrymalis. By Francis-Joseph Hunauld, M.D. F.R.S. Regius Professor of Anatomy and Surgery, and Member of the Royal Academy of Sciences at Paris. Communicated to the Royal Society in a Letter to Tho. Stack, M.D. VI. Concerning the Cause of the General Trade-Winds. By Geo. Hadley, Esq; F.R.S. VII. An Account of the several Earthquakes which have happen'd in New-England, since the first Settlement of the English in that Country, especially of the last, which happen'd on Octob. 29, 1727. Communicated to the Royal Society by Paul Dudley, Esq; F.R.S. in a Letter to the Secretary. VIII. An Account of an extraordinary Effect of Lightning in communicating Magnetism. Communicated by Pierce Dod, M.D. F.R.S. from Dr. Cookson of Wakefield in Yorkshire. IX. A further Account of the extraordinary Effects of the same Lightning at Wakefield. By Dr. Cookson. Communicated by the same. PHILOSOPHICAL TRANSACTIONS For the Months of July, August and Septem. 1735. The CONTENTS. I. The Description and Use of an Arithmetical Machine invented by Christian-Ludovicus Gersten, F. R. S. Professor of Mathematicks in the University of Giessen. Inscribed to Sir Hans Sloane, Bart. President of the Royal Society. II. Of the Figure of the Earth, and the Variation of Gravity on the Surface. By Mr. James Stirling, F. R. S. III. Filtri Lapidis Mexicanii Examinatio et Comparatio cum aliis lapidibus facta, qua demonstratur, nullum vel exiguum ejus usum esse in depuranda aqua per illum colata. Auctore Abrahamo Vatero, M. D. et P. P. Societ. Imper. Nat. Cur. et Reg. Britann. et Boruss. Socio. PHILOSOPHICAL TRANSACTIONS For the Months of Octob. Novem. and Decemb.1735. The CONTENTS. I. An Extract of a Letter from Mr. John Cope to Dr. Alexander Stuart, Physician in Ordinary to her Majesty, Fellow of the College of Physicians, and of the Royal Society, London, concerning an Antient Date found at Widge-Hall in Hertfordshire. II. Remarks upon an Antient Date, found at Widge-Hall near Buntingford in Hertfordshire, on an Oaken Plank; now preserved in the Museum of the Royal Society, London. By John Ward, Rhet. Pr. Gresh. and F.R.S. III. Some Considerations on the Antiquity and Use of the Indian Characters or Figures. By Mr. John Cope. IV. Remarks upon an Antient Date, over a Gate-way, near the Cathedral, at Worcester. By John Ward, Rhet. Prof. Gresh. and F. R. S. The CONTENTS. V. A Letter from Mr. Colin Mac Laurin, Math. Prof. Edinburg. F. R. S. to John Machin, Astr. Prof. Gresh. & Secr. R. S. concerning the Description of Curve Lines. Communicated to the Royal Society on December 21, 1732. VI. A Letter from Stephen Gray, F. R. S. to Dr. Mortimer, Secr. R. S. containing some Experiments relating to Electricity. VII. An Account of the Births and Burials with the Number of the Inhabitants at Stoke-Damerell in the County of Devon. Communicated by the Reverend Mr. Barrow. VIII. An Extraordinary Case of the Foramen Ovale of the Heart being found open in an Adult. Communicated by Claudius Amyand, Esq; Serjeant Surgeon to his Majesty, and F. R. S. N. B. The Papers hinted at by Mr. Mac Laurin p. 143. are printed in a Treatise entitled, Exercitatio Geometrica de Descriptione Curvarum: Authore Gulielmo Braikenridge. Londini, 1733. 4to. LONDON: Printed by W. Innys and R. Manby, Printers to the Royal Society, at the West End of St. Paul's. MDCCXXXVI. PHILOSOPHICAL TRANSACTIONS For the Months of January, Febr. and March, 1736. The CONTENTS. I. A Catalogue of the Fifty Plants from Chelsea Garden, presented to the Royal Society by the Company of Apothecaries, for the Year 1734, pursuant to the Direction of Sir Hans Sloane, Bart. Med. Reg. Præs. Col. Reg. Med. & Soc. Reg. By Isaac Rand, Apothecary, F. R. S. Hort. Chel. Præs. ac Praec. Botan. II. The apparent Times of the Immersions and Emersions of Jupiter's Satellites, which will happen in the Year 1737. Computed to the Meridian of the Royal Observatory at Greenwich, by James Hodgson, F. R. S. and Master of the Royal Mathematical School in Christ-Hospital, London. III. The apparent Times of such of the Immersions and Emersions of Jupiter's Satellites, as are visible at London in the Year 1737. By James Hodgson, F. R. S. IV. A Proposition relating to the Combination of Transparent Lens's with Reflecting Planes. By J. Hadley, Esq; V. Pr. R. S. Communicated to the Royal Society, January 9, 1734. The CONTENTS. V. An Account of a large Bony Substance found in the Womb, which was shewn to the Royal Society, May the 17th, 1733, by Edward Hody, M.D. F.R.S. VI. Some Experiments concerning the Impregnation of the Seeds of Plants, by James Logan, Esq; Communicated in a Letter from him to Mr. Peter Collinson, F.R.S. VII. Some Observations of Eclipses of Jupiter's Satellites, made by Geo. Lynn, Esq; at Southwick, near Oundle in Northamptonshire; Communicated in a Letter to James Jurin, M.D. F.R.S. and Fellow of the Royal College of Physicians, London. VIII. A Letter from Mr. Tho. Jones to James Jurin, M.D. F.R.S. and Fellow of the Royal College of Physicians, concerning the High Tide in the River Thames, on Feb. 16, 1735-6. IX. Affactus Cutaneus singularis, ab Abrahamo Vatero, Anatomes & Botanices in Academia Wittembergensi Professore publico, R.S.S. Regali Societati communicatus. X. Experiments concerning the Vibrations of Pendulums. By the late W. Derham, D.D. F.R.S. and Canon of Windsor. XI. The Construction and Use of Spherical Maps, or such as are delineated upon Portions of a Spherical Surface. By Mr. John Collon, M.A. F.R.S. PHILOSOPHICAL TRANSACTIONS. For the Months of April, May, and June, 1736. The CONTENTS. I. A Copy of an Ancient Chirograph, or Conveyance of Part of a Sepulchre, cut in Marble, lately brought from Rome, and now in the Possession of Sir Hans Sloane, Bart. Pr. R. S. With some Observations upon it by Roger Gale, Esq; V. P. & Tr. R. S. II. Mr. Stephen Gray, F. R. S. his last Letter to Granville Wheler, Esq; F. R. S. concerning the Revolutions which small pendulous Bodies will, by Electricity, make round larger ones from West to East as the Planets do round the Sun. III. Extract of a Letter from Mr. Jof. Nic. De l'Isle, F. R. S. to John Machin, Secr. R. S. & Pr. Astr. Gresh. Dated Petersburg, 5 Feb. 1733, containing several Literary Communications concerning the Construction of a Quick-silver Thermometer, and his Observations on the Eclipses of Jupiter's Satellites, Annis 1731 and 1732. Translated from the French by Phil. Henry Zollman, F. R. S. IV. Experimenta de Perforatione Thoracis, ejusque in Respiratione Effectibus, facta per Guilielmum Houstonum, M. D. & quondam R. S. S. cum Lugduni Batavorum commemoretur. Ann. 1728 & 1729. Regali Societati communicata per Philippum Millerum, R. S. S. V. Obser- PHILOSOPHICAL TRANSACTIONS. For the Months of July, August, and Septemb.1736. The CONTENTS. I. A Catoptric Microscope. By Robert Barker, M.D. F.R.S. II. An Account of the Standard Measures preserved in the Capitol at Rome. By Martin Folkes, Esq; V.P.R.S. III. Observationes nonnullæ notatu non indignæ, Anno 1734. Ab Johanne Frid. Weidler, R.S.S. &c. Vitembergæ faææ. IV. Observations made of the Latitude, Variation of the Magnetic Needle, and Weather, by Capt. Christopher Middleton, in a Voyage from London to Hudson’s-Bay, Anno 1735. V. An Experiment to shew that some Damps in Mines may be occasioned only by the burning of Candles under Ground, without the Addition of any noxious Vapour, even when the Bottom of the Pit has a Communication with the outward Air, unless the outward Air be forcibly driven in at the said Communication or Pipe. By the Revd. J.T. Desaguliers, LLD. F.R.S. VI. A Chemical Experiment by Mr. John Maud, serving to illustrate the Phœnomenon of the inflammable Air shewn to the Royal Society by Sir James Lowther, Bart. as described in Philof. Transact. Numb. 429. VII. A The CONTENTS. VII. A Letter from Mr. Henry Forth to the late Rev'd William Derham, D.D. Canon of Windsor, and F.R.S. concerning the Storm, Jan. 8th, 1735. VIII. An Account of the Bones of Animals being changed to a Red Colour by Aliment only. By John Belchier, Surgeon, F.R.S. IX. An Observation of a white Liquor resembling Milk, which appeared instead of Serum separated from the Blood after it had stood some time. By Alexander Stuart, M.D. Physician in Ordinary to her Majesty, F.R.S. and of the College of Physicians, London. X. An Account of what was observed upon opening the Corpse of a Person who had taken several Ounces of crude Mercury internally; and of a Plumb-Stone lodg'd in the Coats of the Rectum. Communicated in a Letter from the late Dr. Madden, Physician at Dublin, to Sir Hans Sloane, Bart. Pr. R.S. XI. Observatio Eclipseos Telluris Romæ habita in Ædibus Eminentissimi Cardinalis DE-VIA, v. Non. i.e. d. 3. Maii N.S. Apr. 22. V.S. MDCCXXXIV. per Didacum de Revillas Abbat. Hieronym. R.S.S. & Andream Celsium, R.S.S. Astron. Profess. Upsal. & R.S. Suec. Secr. PHILOSOPHICAL TRANSACTIONS For the Month of October, 1736. The CONTENTS. I. The Description and Manner of using an Instrument for measuring the Degrees of the Expansion of Metals by Heat. By Mr. John Ellicott. II. A further Account of the Bones of Animals being made Red by Aliment only. By John Belchier, F. R. S. III. The Immersions and Emersions of the four Satellites of Jupiter, for the Year 1738. computed to the Meridian of the Royal Observatory at Greenwich, by James Hodgson, F. R. S. and Master of the Royal Mathematical School at Christ's Hospital, London. IV. The apparent Times of such of the Immersions and Emersions of Jupiter's Satellites, as are visible at London, in the Year 1738. By the Same. V. Part of a Letter from William Burton, M.D. at Windsor, to C. Mortimer, R. S. Secr. concerning the Viper-catchers, and their Remedy for the Bite of a Viper. VI. A Narration of the Experiments made June 1, 1734. before several Members of the Royal Society, and others, on a Man, who suffer'd himself to The CONTENTS. to be bit by a Viper, or common Adder; and on other Animals likewise bitten by the same, and other Vipers. Drawn up by C. Mortimer, M.D. Secr. R.S. With some Remarks on the Cure of the Bite of a mad Dog. VII. A brief Account by Mr. John Eames, F.R.S. of a Work entitled, The Method of Fluxions and Infinite Series, with its Application to the Geometry of Curve Lines, by the Inventor Sir Isaac Newton, Kt. &c. Translated from the Author's Latin Original not yet made publick. To which is subjoin'd a perpetual Comment upon the whole, &c. by John Colson, M.A. and F.R.S. VIII. Of an Inguinal Rupture, with a Pin in the Appendix Coeci, incrustèd with Stone; and some Observations on Wounds in the Guts; by Claudius Amyand, Esq; Serjeant Surgeon to His MAJESTY, and F.R.S. IX. Hermanni Boerhaave, A.L.M. Philosop. & Med. Doct. Medicinæ in Universitate Leidensi Profess. Colleg. Chirurgic. Praef. Reg. Soc. Lond. necnon Reg. Scient. Acad. Parisiens. Soc. de Mercurio Experimenta. Pars II. X. Eclipseis Lunæ partialis die secundo Octobris, Styl. nov. Anno MDCCXXXV. Vitembergæ Saxonum observata à Jo. Frider. Weidlero, R.S.S. Printed for T. Woodward, at the Half-Moon, between the Two Temple-Gates in Fleetstreet; and C. Davis, the Corner of Pater-noster-row, next Warwick-lane. M.DCC.XXXVIII. PHILOSOPHICAL TRANSACTIONS For the Months of November and December, 1736. The CONTENTS. I. An Account of a Shock of an Earthquake felt in Sussex on the 25th of October, Anno 1734. communicated to the Royal Society by his Grace Charles Duke of Richmond and Lenox, &c. F. R. S. And of another in Northamptonshire, in October, Anno 1731. by the Rev. Mr. Wasse. II. Hermanni Boerhaave, A. L. M. Philosoph. & Med. Doct. Medicinæ in Universitate Leidensi Profess. Colleg. Chirurgic. Praef. Reg. Soc. Lond. necnon Reg. Scient. Acad. Parisienf. Socii, de Mercurio Experimenta. III. A Letter to the Rev. John Theoph. Desaguliers, LL.D. F. R. S. from Mr. Martin Triewald, F. R. S. Captain of Mechanicks, and Military Architect to his Swedish Majesty, concerning an Improvement of the Diving Bell. IV. A Letter from Samuel Dale, M. L. to Sir Hans Sloane, Bart. President of the Royal Society, containing the Descriptions of the Moose-Deer of New-England, and a sort of Stag in Virginia; with some Remarks relating to Mr. Ray's Description of the flying Squirrel of America. V. An Attempt to explain the Phænomenon of the horizontal Moon appearing bigger, than when elevated The CONTENTS. vated many Degrees above the Horizon: Supported by an Experiment. By the Rev. J. T. Desaguliers, LL.D. F.R.S. Communicated Jan. 30, 1734-5. VI. An Explication of the Experiment made in May 1735, as a farther Confirmation of what was said in a Paper given in January 30, 1734-5. to account for the Appearance of the horizontal Moon seeming larger than when higher. By the Same. VII. A Letter from Joseph Atwell, D.D. F.R.S. and Principal of Exeter College, Oxford, to Dr. Mortimer, R.S. Secr. containing some Observations, on a Man and Woman bit by Vipers. VIII. An Account of some Electrical Experiments intended to be communicated to the Royal Society by Mr. Stephen Gray, F.R.S. taken from his Mouth by Cromwell Mortimer, M.D. R.S. Secr. on Feb. 14, 1735-6. being the Day before he died. IX. Some Thoughts concerning the Sun and Moon, when near the Horizon appearing larger, than when nearer the Zenith; being Part of a Letter from James Logan, Esq.; to Sir Hans Sloane, Bart. President of the Royal Society, &c. Printed for T. Woodward, at the Half-Moon, between the Two Temple-Gates in Fleetstreet; and C. Davis, the Corner of Pater-noster-row, next Warwick-lane; PRINTERS to the ROYAL SOCIETY. M.DCC.XXXVIII.