Front Matter

The only official reprint authorized by The Royal Society of London Printed in U.S.A. PHILOSOPHICAL TRANSACTIONS, GIVING SOME ACCOUNT OF THE Present Undertakings, Studies, and Labours, OF THE INGENIOUS, IN MANY Considerable Parts of the WORLD. VOL. LII. PART I. For the Year 1761. LONDON: Printed for L. Davis and C. Reymers, Printers to the Royal Society, against Gray's-Inn Gate, in Holbourn. M.DCC.LXII. ADVERTISEMENT. The Committee appointed by the Royal Society to direct the publication of the Philosophical Transactions, take this opportunity to acquaint the public, that it fully appears, as well from the council-books and journals of the Society, as from repeated declarations, which have been made in several former Transactions, that the printing of them was always, from time to time, the single act of the respective Secretaries, till the Forty-seventh Volume. And this information was thought the more necessary, not only as it has been the common opinion, that they were published by the authority, and under the direction, of the Society itself; but also, because several authors, both at home and abroad, have in their writings called them the Transactions of the Royal Society. Whereas in truth the Society, as a body, never did interest themselves any further in their publication, than by occasionally recommending the revival of them to some of their secretaries, when, from the particular circumstances of their affairs, the Transactions had happened for any length of time to be intermitted. And this seems principally to have been done with a view to satisfy the public, that their usual meetings were then continued for the improvement of knowledge, and benefit of mankind, the great ends of their first institution by the Royal Charters, and which they have ever since steadily pursued. But the Society being of late years greatly enlarged, and their communications more numerous, it was thought adviseable, that a Committee of their Members should be appointed to reconsider the papers read before them, and select out of them such, as they should judge most proper for publication in the future Transactions; which was accordingly done upon the 26 of March 1752. And the grounds of their choice are, and will continue to be, the importance or singularity of the subjects, or the advantageous manner of treating them; without pretending to answer for the certainty of the facts, or propriety of the reasonings, contained in the several papers so published, which must still rest on the credit or judgment of their respective authors. It is likewise necessary on this occasion to remark, that it is an established rule of the Society, to which they will always adhere, never to give their opinion, as a body, upon any subject, either of nature or art, that comes before them. And therefore the thanks, which are frequently proposed from the chair, to be given to the authors of such papers, as are read at their accustomed meetings, or to the persons, through whose hands they receive them, are to be considered in no other light, than as a matter of civility, in return for the respect shewn to the Society by those communications. The like also is to be said with regard to the several projects, inventions, and curiosities of various kinds, which are often exhibited to the Society; the authors whereof, or those who exhibit them, frequently take the liberty to report, and even to certify in the public newspapers, that they have met with the highest applause and approbation. And therefore it is hoped, that no regard will hereafter be paid to such reports, and public notices; which in some instances have been too lightly credited, to the dishonour of the Society. CONTENTS TO PART I. VOL. LII. I. An Account of the Use of Furze in fencing the Banks of Rivers: In a Letter to the Reverend Stephen Hales, D.D. F.R.S. from the Reverend Mr. David Wark. p. 1 II. An Account of a remarkable Halo: In a Letter to the Reverend William Stukeley, M.D. F.R.S. from Thomas Barker, Esq; p. 3 III. An Account of a Meteor seen in New England, and of a Whirlwind felt in that Country: In a Letter to the Rev. Tho. Birch, D.D. Secretary to the Royal Society, from Mr. John Winthrop, Professor of Philosophy at Cambridge in New England. p. 6 IV. A Letter from the Reverend Nevil Maskelyne, A.M. Fellow of Trinity College, in the University of Cambridge, and F.R.S. to the Reverend Dr. Birch, Secretary to the Royal Society; containing a Theorem of the Aberration of the Rays of Light refracted through a Lens, on account of the Imperfection of the Spherical Figure. p. 17 V. Extract of a Letter from the Abbé De la Caille, of the Royal Academy of Sciences at Paris, and F.R.S. to William Watson, M.D. F.R.S. recommending to the Reverend Mr. Nevil Maskelyne, F.R.S. to make make at St. Helena a Series of Observations for discovering the Parallax of the Moon. VI. A Letter from the Rev. Nevil Maskelyne, M. A. F. R. S. to William Watson, M. D. F. R. S. p. 26 VII. A Dissertation upon a Samnite Denarius, never before published: In a Letter to the Rev. Thomas Birch, D. D. Secretary to the Royal Society, from the Rev. John Swinton, B. D. of Christ-Church, Oxon, F. R. S. p. 28 VIII. An Account of an Eruption of Mount Vesuvius: In a Letter to Philip Carteret Webb, Esq; F. R. S. from Sir Francis Haskins Eyles Stiles, Bart. F. R. S. p. 39 IX. Another Account of the same Eruption of Mount Vesuvius: In a Letter to Daniel Wray, Esq; F. R. S. from Sir Francis Haskins Eyles Stiles, Bart. F. R. S. p. 41 X. Extract of a Letter from Mr. Robert Mackinlay, to the Right Honourable the Earl of Morton, F. R. S. dated at Rome, the 9th January 1761, concerning the late Eruption of Mount Vesuvius, and the Discovery of an antient Statue of Venus at Rome. p. 44 XI. A Letter to the Rev. Dr. William Brakenridge, Rector of St. Michael Bassishaw, London, and F. R. S. concerning the Term and Period of Human Life: In which the Inequalities in constructing, and the false Conclusions drawn from Dr. Halley's Breslau Table are fully proved; the supposed extraordinary Healthfulness of that Place is particularly examined, and confuted; and its real State equalled by divers Places in England; the Imperfection of all the Tables formed upon 1000 Lives is shewn; and a Method proposed CONTENTS. proposed to obtain one much better: By T. W. A. M. p. 46 XII. Experiments on checking the too luxuriant Growth of Fruit-Trees, tending to dispose them to produce Fruit: In a Letter to Mr. Peter Collinson, F. R. S. from Keane Fitzgerald, Esq; F. R. S. p. 71 XIII. An Account of the Urtica Marina: In a Letter to Mr. Peter Collinson, F. R. S. from Joseph Gaertner, M. D. p. 75 XIV. A Catalogue of the Fifty Plants from Chelsea Garden, presented to the Royal Society by the worshipful Company of Apothecaries, for the Year 1760, pursuant to the Direction of Sir Hans Sloane, Bart. Med. Reg. & Soc. Reg. nuper Praes; by John Wilmer, M. D. clariss. Societatis Pharmaceut. Lond. Soc. Hort. Chelsean. Praefectus & Praelector Botanic. p. 85 XV. An Account of the Cicuta, recommended by Dr. Storke; by William Watson, M. D. F. R. S. p. 89 XVI. An Account of an Anthelion observed near Oxford: In a Letter to the Rev. Tho. Birch, D. D. Secretary to the Royal Society, from the Rev. John Swinton, B. D. of Christ-Church, Oxon. F. R. S. p. 94 XVII. An Account of a Production of Nature at Dunbar in Scotland, like that of the Giants-Causeway in Ireland; by the Right Reverend Richard Lord Bishop of Ossory, F. R. S. p. 98 XVIII. An Account of a remarkable Meteor seen at Oxford: In a Letter to the Rev. Thomas Birch, D. D. Secretary to the Royal Society, from the Rev. John Swinton, B. D. of Christ-Church, Oxon. F. R. S. p. 99 XIX. CONTENTS. XIX. An Account of some Productions of Nature in Scotland, resembling the Giants-Causeway in Ireland: In a Letter to the Right Reverend Richard Lord Bishop of Ossory, F. R. S. from Emanuel Mendez da Costa, F. R. S. p. 103 XX. Elements of new Tables of the Motions of Jupiter's Satellites: In a Letter to the Rev. Charles Mason, Mason, D. D. Woodwardian Professor in the University of Cambridge, and F. R. S. from Mr. Richard Dunthorne. p. 105 XXI. Dissertatio de Zoophytis, quam Regiae Societatis Scientiarum Angliæ legendam et judicandam praebet Job Baster, Med. Doctor. Acad. Caes. Reg. Soc. Anglic. et Holland. Socius. p. 108 XXII. An Account of an uncommon Phenomenon in Dorsetshire: In a Letter from John Stephens, M.A. to Emanuel Mendez da Costa, F. R. S. p. 119 XXIII. Additional Observations upon some Plates of white Glass found at Herculaneum: In a Letter to Charles Morton, M.D. R.S.S. By J. Nixon, A.M. and F. R. S. p. 123 XXIV. A Description of the Cephus: In a Letter from D. Lysons, M.D. to Robert More, Esq; F.R.S. p. 135 XXV. An Extract of the Register of the Parish of Holy Cross in Salop, from Michaelmas 1750 to Michaelmas 1760: Communicated by Robert More, Esq; F. R. S. p. 140 XXVI. An Account of the Earthquake at Lisbon, 31st March 1761: In a Letter from thence, dated the 2d April 1761, to Joseph Salvador, Esq; F. R. S. p. 141 XXVII. CONTENTS. XXVII. Another Account of the same Earthquake: In a Letter from Mr. Molloy, dated there April 3, 1761, to Keane Fitzgerald, Esq; F. R. S. p. 142 XXVIII. A further Account of the Case of William Carey, whose Muscles began to be ossified: In a Letter to the Right Hon. the Lord Cadogan, F. R. S. from the Rev. William Henry, D. D. F. R. S. p. 143 XXIX. A Description of a new Thermometer and Barometer: In a Letter to the Right Hon. George Earl of Macclesfield, President of the Royal Society, from Keane Fitzgerald, Esq; F. R. S. p. 146 XXX. An Account of the Earthquake felt in the Island of Madeira, March 31, 1761; by Thomas Heberden, M. D. F. R. S. Communicated by William Heberden, M. D. F. R. S. p. 155 XXXI. An Account of a Treatise in Latin, presented to the Royal Society, intituled, De admirando frigore artificiali, quo mercurius est congelatus, dissertatio, &c. à J. A. Braunio, Academiæ Scientiarum Membro, &c. by William Watson, M. D. R. S. S. p. 156 XXXII. Observations on the Transit of Venus over the Sun, on the 6th of June 1761: In a Letter to the Right Hon. George Earl of Macclesfield, President of the Royal Society, from the Rev. Nathanael Bliss, M. A. Savilian Professor of Geometry in the University of Oxford, and F. R. S. p. 173 XXXIII. An Account of the Transit of Venus over the Sun, on Saturday Morning, 6th June 1761, at Savile-House, about 8' of Time West of St. Paul's, London. p. 178 XXXIV. Observations on the Transit of Venus, June 6th, 1761, made at Spital-Square; the Longitude CONTENTS. of which is 4° 11' West of the Royal Observatory at Greenwich, and the Latitude 51° 31' 15'' North; by John Canton, M. A. and F. R. S. p. 182 XXXV. Some Observations of the Planet Venus, on the Disk of the Sun, June 6th, 1761; with a preceding Account of the Method taken for verifying the Time of that Phenomenon; and certain Reasons for an Atmosphere about Venus: By Samuel Dunn. p. 184 XXXVI. An Account of the Observations made on the Transit of Venus, June 6, 1761, in the Island of St. Helena: In a Letter to the Right Hon. George Earl of Macclesfield, President to the Royal Society, from the Reverend Nevil Maskelyne, M. A. and F. R. S. p. 196 XXXVII. An Account of the same Transit; by the Rev. Mr. Richard Haydon: In a Letter to Dr. John Bevis, M. D. p. 202 XXXVIII. Observations on the same Transit; and on an Eclipse of the Moon, May 8, 1761; and of the Sun, on the 3d of June 1761: In a Letter to the Rev. Thomas Birch, D. D. Secretary to the Royal Society, from Mr. Peter Wargentin, Secretary to the Royal Academy of Sciences in Sweden, and F. R. S. p. 208 XXXIX. An Account of the Observations made on the same Transit in Sweden: In a Letter from Mr. Peter Wargentin, Secretary to the Royal Academy of Sciences in Sweden, and F. R. S. to Mr. John Ellicot, F. R. S. Translated from the French. p. 213 XL. Observationis Veneris sub Sole visæ, habita Parisiis, die 6° Junii 1761, in palatio Luxemburgii, quas Regiæ Societati Londinensi, venerationis juxta obsequium, offert Hieronymus De la Lande, Acad. Reg. CONTENTS. Reg. Scient. Parisinæ Socius, Regiusque Mathefeos Professor. p. 216 XL I. An Account of the Observations on the same Transit, made in and near Paris: In a Letter from Mr. Benedict Ferner, Professor of Astronomy at Upsal, and F. R. S. to the Rev. Thomas Birch, D. D. Secretary to the Royal Society. Translated from the French. p. 221 XL II. Observations on the same Transit of Venus, made at Constantinople; by his Excellency James Porter, Esq; his Majesty's Ambassador there: In a Letter to George Amyand, Esq; p. 226 XL III. An Account of the Observations made on the same Transit at Upsal in Sweden: In a Letter to Mr. Benjamin Wilson, F. R. S. from Mr. Thor-burn Bergman, of Upsal. p. 227 XL IV. An Account of the Observations made upon the Transit of Venus over the Sun, 6th June 1761, at Cajaneburg in Sweden, by Mons. Planman: Communicated in a Letter from Mr. Peter Wargentin, Secretary to the Royal Academy of Sciences in Sweden, and F. R. S. to Mr. John Ellicott, F. R. S. Translated from the French. p. 231 XL V. A second Letter to the Right Hon. the Earl of Macclesfield, President of the Royal Society, concerning the Transit of Venus over the Sun, on the 6th of June 1761; by the Rev. Nathanael Bliss, M. A. Savilian Professor of Geometry in the University of Oxford, and F. R. S. p. 232 XL VI. Observatio transitus Veneris per discum Solis, facta Matriti die 6° Junii 1761, à P. Antonio Eximenio, &c Soc. Jes. Communicated by Cha. Morton, M. D. Secretary to the Royal Society. p. 251 CONTENTS. XLVII. Extract from a Paper of Mons. De la Lande, of the Royal Academy of Sciences at Paris, to Mr. Gael Morris, of the Transit of Venus, on the 6th June 1761, observed at Tobolsk in Siberia, by M. Chappe. p. 254 XLVIII. Observatio congressus Veneris cum Sole, habita Lugduni Batavorum, die 6° Junii. à Joanne Lulofs, in eadem Academ. Astronom. Mathef. & Philofoph. Profefiore. Communicated by Cha. Morton, M. D. Secretary to the Royal Society. p. 255 XLIX. The Case of a Patient, who voided a large Stone through the Perineaum from the Urethra. Communicated to the Royal Society by Mr. Joseph Warner, Surgeon, of Guy's Hospital, to whom this Memoir was addressed, for that Purpose, by Dr. Frewen, of Rye in Sussex. p. 258 L. An Account of the Case of a Boy, who had the Mal-leus of each Ear, and one of the Incus's, dropt out. Communicated by the Rev. Philip Morant, M. A. Rector of St. Mary's in Colchester. p. 264 LI. Observations concerning the Body of his late Majefty, October 26, 1760; by Frank Nicholls, M. D. F. R. S. Physician to his late Majefty. p. 265 LII. Of the Irregularities in the planetary Motions, caused by the mutual Attraction of the Planets: In a Letter to Charles Morton, M. D. Secretary to the Royal Society. By Charles Walmsley, F. R. S. and Member of the Royal Academy of Sciences at Berlin, and of the Institute at Bologna. p. 275 LIII. An Account of a Treatife in French, presented to the Royal Society, intituled, "Lettres sur l'Electricité," by the Abbé Nollet, Member of the Royal Academy. CONTENTS. "Academy of Sciences, &c. &c." By William Watson, M.D. R.S.S. p. 336 LIV. The Case of a Man, whose Heart was found enlarged to a very uncommon Size; by Mr. Richard Pulteney: Communicated by W. Watson, M.D. R.S.S. p. 344 LV. An Account of several Experiments in Electricity: In a Letter to Mr. Benjamin Wilson, F.R.S. By Edward Delaval, Esq; F.R.S. p. 353 LVI. An Account of an Encrinus, or Starfish, with a jointed Stem, taken on the Coast of Barbadoes, which explains to what kind of Animal these Fossils belong, called Starstones, Aleriae, and Astropodia, which have been found in many Parts of this Kingdom: In a Letter to Mr. Emanuel Mendez da Costa, F.R.S. By John Ellis, Esq; F.R.S. p. 357 LVII. Remarks on a Passage of the Editor of the Connoissance des Meuvements Celestes pour l'Annee 1762: In a Letter to the Right Hon. George Earl of Macclesfield, President of the Royal Society. By Matthew Raper, Esq; F.R.S. p. 366 LVIII. An Extract of a Letter from Monsieur De la Lande, of the Royal Academy of Sciences at Paris, to Dr. Bevis, dated there March 26, 1762. Translated from the French. p. 369 LIX. Observation of the Transit of Venus over the Sun, June 6, 1761, at the Island of Rodrigues; by Mr. Pingré, of the Royal Academy of Sciences at Paris. Translated from the French, by Matthew Maty, M.D. F.R.S. p. 371 LX. Observations made at the Cape of Good Hope; by Mr. Charles Mason and Mr. Dixon; reduced CONTENTS. to apparent Time by Mr. Mason. With an Appendix. p. 378 LXI. Latitude of the Observatory at the Cape of Good Hope, reduced from the Observations of different Stars; by Mr. Charles Mason. p. 395 LXII. An Account of an Observation of the Transit of Venus over the Sun, on the 6th of June 1761, at Madras; by the Rev. Mr. William Hirst, Chaplain of one of his Majesty's Ships in the East Indies: Contained in a Letter wrote by him to the Right Hon. the Earl of Macclesfield, President of the Royal Society. Dated Fort St. George, 1st July 1761. p. 396 LXIII. An Account of a printed Memoir, in Latin, presented to the Royal Society, intituled, De Veneris ac Solis congressu observatio habita in astronomicâ speculâ Bononiensis Scientiarum Instituti, die 5 Junii 1761. Auctore Eustachio Zanotto, ejusdem Instituti Astronomo, ac Regiae utriusque Londinensis et Berolinensis Academiae Socio. By the Rev. Nathanael Bliss, M.A. Savilian Professor of Geometry, and F.R.S. p. 399 PHILOSOPHICAL TRANSACTIONS, GIVING SOME ACCOUNT OF THE Present Undertakings, Studies, and Labours, OF THE INGENIOUS, IN MANY Considerable Parts of the WORLD. VOL. LII. PART II. For the Year 1762. LONDON: Printed for L. Davis and C. Reymer's, Printers to the Royal Society, against Gray's-Inn Gate, in Holbourn. M.DCC.LXIII. ADVERTISEMENT. The Committee appointed by the Royal Society to direct the publication of the Philosophical Transactions, take this opportunity to acquaint the public, that it fully appears, as well from the council-books and journals of the Society, as from repeated declarations, which have been made in several former Transactions, that the printing of them was always, from time to time, the single act of the respective Secretaries, till the Forty-seventh Volume. And this information was thought the more necessary, not only as it has been the common opinion, that they were published by the authority, and under the direction, of the Society itself; but also, because several authors, both at home and abroad, have in their writings called them the Transactions of the Royal Society. Whereas in truth the Society, as a body, never did interest themselves any further in their publication, than by occasionally recommending the revival of them to some of their secretaries, when, from the particular circumstances of their affairs, the Transactions had happened for any length of time to be intermitted. And this seems principally to have been done with a view to satisfy the public, that their usual meetings were then continued for the improvement of knowledge, and benefit of mankind, the great ends of their first institution by the Royal Charters, and which they have ever since steadily pursued. But the Society being of late years greatly enlarged, and their communications more numerous, it was thought advisable, that a Committee of their Members should be appointed to reconsider the papers read before them, and select out of them such, as they ADVERTISEMENT. Should judge most proper for publication in the future Transactions; which was accordingly done upon the 26 of March 1752. And the grounds of their choice are, and will continue to be, the importance or singularity of the subjects, or the advantageous manner of treating them; without pretending to answer for the certainty of the facts, or propriety of the reasonings, contained in the several papers so published, which must still rest on the credit or judgment of their respective authors. It is likewise necessary on this occasion to remark, that it is an established rule of the Society, to which they will always adhere, never to give their opinion, as a body, upon any subject, either of nature or art, that comes before them. And therefore the thanks, which are frequently proposed from the chair, to be given to the authors of such papers, as are read at their accustomed meetings, or to the persons, through whose hands they receive them, are to be considered in no other light, than as a matter of civility, in return for the respect shewn to the Society by those communications. The like also is to be said with regard to the several projects, inventions, and curiosities of various kinds, which are often exhibited to the Society; the authors whereof, or those who exhibit them, frequently take the liberty to report, and even to certify in the public newspapers, that they have met with the highest applause and approbation. And therefore it is hoped, that no regard will hereafter be paid to such reports, and public notices; which in some instances have been too lightly credited, to the dishonour of the Society. CON- CONTENTS TO PART I. VOL. LII. LXIV. Extract of a Letter of Mr. John Wood, from Calcutta, to J. Perry, Esq; of Hampstead. Communicated by the Rev. W. Stukeley, M. D. p. 415 LXV. Some Account of the extraordinary Agitation of the Waters in Mount's-bay, and other Places, on the 31st of March 1761: In a Letter to the Rev. Dr. Charles Lyttelton, Dean of Exeter, from the Reverend William Borlase, M. A. F. R. S. p. 118 LXVI. Observations on a Clock of Mr. John Shelton, made at St. Helena: In a Letter to the Right Honourable Lord Charles Cavendish, Vice-President of the Royal Society, from the Reverend Nevil Maskelyne, M. A. F. R. S. p. 434 LXVII. Observations upon some Gems similar to the Tourmalin; by Mr. Benjamin Wilson, F. R. S. p. 443 LXVIII. Observations on the Tides in the Straits of Gibraltar; by Henry More, Esq; p. 447 LXIX. An Account of the case of a young Man stupified by the Smoke of Sea-coal; by Dr. Frewen of Sussex. p. 454 LXX. A Letter from Benjamin Franklin, L. L. D. and F. R. S. to the Reverend Thomas Birch, D. D. and Secretary to the Royal Society. p. 456 LXXI. CONTENTS. LXXI. A Letter from John Canton, M.A. and F.R.S. to Benjamin Franklin, LL.D. and F.R.S. containing some Remarks on Mr. Delaval's Electrical Experiments. p. 457 LXXII. An Attempt to assign the cause, why the Sun and Moon appear to the naked Eye larger when they are near the Horizon. With an Account of several Phænomena, relative to this Subject. By Mr. Samuel Dunn. p. 462 LXXIII. Extract of a Letter from Mr. John Bartram, of Philadelphia, to Benjamin Franklin, LL.D. F.R.S. relating to a remarkable Aurora Borealis. p. 474 LXXIV. Observations on noxious Animals in England; By the Rev. Richard Forster, M.A. Rector of Shefford in Bucks. p. 475 LXXV. Extract of a Letter to the Reverend Thomas Birch, D.D. Secretary to the Royal Society, from Mr. Abraham Mason, of Barbadoes, relating to an extraordinary Agitation of the Sea there, 31st of March 1761, and an epidemical Disorder in that Island. p. 477 LXXVI. Observations on Auroræ Boreales in Sweden: In a Letter to Mr. Benjamin Wilson, F.R.S. from Mr. Thorbern Bergman of Upsal. p. 479 LXXVII. An Account of the double Refractions in Crystals; by Father John Beccaria, Professor of Experimental Philosophy at Turin. p. 486 LXXVIII. A Catalogue of the Fifty Plants from Chelsea Garden, presented to the Royal Society by the Worshipful Company of Apothecaries, for the Year 1761, pursuant to the Direction of Sir Hans Sloane Baronet, Med. Reg. and Soc. Reg. nuper Praef.; by John Wilmer, CONTENTS. LXXIX. An Account of a Work, intituled, Jacobi Christani Schaeffer icones et descriptio Fungorum quorundam singularium et memorabilium; simul Fungorum Bavariae icones nativis coloribus expressae editioni jam paratae propediem evulgandae, denunciantur; by Mr. William Hudson, F. R. S. p. 491 LXXX. An Account of a remarkable Agitation of the Sea, July 28, 1761, and of two Thunder-Storms in Cornwall: In a Letter to the Rev. Thomas Birch, D. D. Secretary to the Royal Society, from the Rev. William Borlase, M. A. F. R. S. p. 495 LXXXI. Extract of a Letter from John Huxham, M. D. F. R. S. to William Watson, M. D. F. R. S. dated at Plymouth, February 5, 1762, relating to two remarkable Cases in Surgery. p. 507 LXXXII. An Account of the Success of Monsr. Daviel's Method of Extracting Cataracts: In a Letter to James Parsons, M. D. F. R. S. from Andrew Cantwell, M. D. p. 515 LXXXIII. Extract of a Letter from Charlton Wolaston, M. D. F. R. S. to William Heberden, M. D. F. R. S. dated Bury St. Edmund's, April 13, 1762, relating to the Case of Mortification of Limbs in a Family at Wattisham in Suffolk. p. 523 LXXXIV. Extract of a Letter from the Reverend James Bones, M. A. Minister of Wattisham, near Stowmarket in Suffolk, to George Baker, D. D. F. R. S. relating to the Case of Mortification of Limbs in a Family there. p. 526 CONTENTS. LXXXV. Extract of a second Letter from the Rev. Mr. Bones, to Dr. Baker. p. 529 LXXXVI. Observations for proving the Going of Mr. Ellicott's Clock at St. Helena; by Mr. Charles Mason. p. 534 LXXXVII. An Account of Mr. Mason's Paper, concerning the Going of Mr. Ellicott's Clock, at St. Helena; by James Short, M. A. F. R. S. p. 540 LXXXVIII. An Account of the Eclipse of the Moon, on the 8th of May 1762, in the Morning, observed by Mr. Short, in Surrey-Street, London. p. 542 LXXXIX. Observations on the same Eclipse; by Dr. Bevis. p. 543 XC. An Account of a remarkable Monument found near Ashford in Derbyshire: In a Letter from the Reverend Mr. Evatt, of Ashford, to Mr. Whitehurst, of Derby. Communicated by Benjamin Franklin, L. L. D. F. R. S. p. 544 XCI. Descriptio Fontis Hieronis in Metallifodinis Chemnicensibus in Hungaria, anno 1756 extructi; Auctore —— Wolfe, M. D. Communicated by Mr. Baker, F. R. S. p. 547 XCII. An Account of a remarkable Marine Production: In a Letter to the Reverend Thomas Birch, D. D. Secretary to the Royal Society, from Alexander Russell, M. D. Physician to St. Thomas's Hospital, and F. R. S. p. 554 XCIII. A Letter from the Rev. Nevil Maskelyne, M. A. F. R. S. to the Rev. Thomas Birch, D. D. Secretary to the Royal Society, containing the results of observations of the distance of Moon from the Sun and fixed stars, made in a voyage from England to the Island of St. Helena, in order to determine the Longitude CONTENTS. gitude of the Ship, from time to time; together with the whole Process of Computation used on this Occasion. XCIV. Certain Reasons for a Lunar Atmosphere; by Mr. Samuel Dunn. p. 578 XCV. An Account of the Comet seen at Paris, in June 1762: In an Extract of a Letter, dated at Paris July 30, 1762, from Mons. De la Lande, of the Royal Academy of Sciences at Paris, to Charles Morton, M. D. Secretary to the Royal Society. p. 581 XCVI. Minutes of the Observation of the Transit of Venus over the Sun, the 6th of June 1761, taken at Calcutta in Bengal, Latitude 22° 30', Longitude East from London nearly 92°. Communicated from the Court of Directors of the East India Com- pany, by Charles Morton M. D. F. R. S. p. 582 XCVII. A further Account of the Case of the Family at Wattisham, in Suffolk, whose Limbs mortified: In a Letter from Charlton Wollaston, M. D. F. R. S. and Physician to Guy's Hospital, to Thomas Birch, D. D. Secretary to the Royal Society. p. 584 XCVIII. Observations on the Tides in the Island of St. Helena: in a Letter from the Rev. Nevil Maskelyne, A. M. F. R. S. to Thomas Birch, D. D. Secretary to the Royal Society. p. 586 XCIX. Extract of a Letter from M. de la Lande, of the Royal Academy of Sciences at Paris, to the Rev. Mr. Nevil Maskelyne, F. R. S. dated Paris, Nov. 18, 1762. p. 607 C. The Observations of the internal Contact of Venus with the Sun's Limb, in the late Transit, made in different CONTENTS. different Places of Europe, compared with the Time of the Contact observed at the Cape of Good Hope, and the Parallax of the Sun from thence determined. By James Short, A. M. F. R. S. p. 611 CI. Some Suggestions concerning the preventing the Mischiefs, which happen to Ships and their Masters by Lightning; being the Substance of a Letter to the late Right Honourable George Lord Anson, first Lord of the Admiralty, and F. R. S. by William Watson, M. D. F. R. S. p. 629 CII. An Account of the Case of the late Rev. James Bradley, D. D. Astronomer Royal: in a Letter to the Right Honourable George Earl of Macclesfield, President of R. S. from Daniel Lysons, M. D. p. 635 CIII. Experiments to prove that Water is not incompressible; by John Canton, M. A. and F. R. S. p. 640 CIV. An Account of the Eclipse of the Sun, October 16, 1762, in a Letter from Mr. Samuel Dunn, to Mr. James Short, M. A. and F. R. S. p. 644 CV. Extract of a Letter from W. Watson, M. D. F. R. S. to John Huxham, M. D. F. R. S. containing some Remarks upon the Catarrhal Disorder, which was very frequent at London and in its Neighbourhood in May 1762, and upon the Dysentery, which prevailed the following Autumn. p. 646 CVI. Viro inclyto ac de Republica Literaria meritissimo D. C. Morton, Med. Doct. Societati Regiae Scientiarum Londinensi ob Aëtis S. P. D. Ioannes Lulofs. p. 650 CVII. An CONTENTS. CVII. An Account of the Gardenia: In a Letter to Philip Carteret Webb, Esq; F. R. S. from Daniel C. Solander, M. D. p. 654 CVIII. An Account of the Male and Female Cochineal Insects, that breed on the Cactus Opuntia, or Indian Fig, in South Carolina and Georgia. In a Letter from John Ellis, Esq; to Peter Wych, Esq; p. 661