Chapters in this book

1. Frontmatter I
2. CONTENTS OF VOLUME IV XLI
3. I. EXPERIMENTS and obfervations relating to the Analyfis of Atmofpherical air, by the Rev. Dr. J. Prieftle 1
4. II. Farther Experiments relating to the Generation of Air from Water, by Rev. Dr. J. Prieftley 11
5. III. To determine the true Place of a Planet, in an Elliptical Orbit, direuly from the mean Anomaly, by Converging Series, by David Rittenhoufe, L. L. D . Prefident A. P. S. 21
6. IV. On the Improvement of Time-keepers, by David Rittenhoufe, L.L. D. Prefident of the Socie 26
7. V. On the Expanfion of Wood by Heat, in a Letter from Davjd Rittenhoufe, L. L. D. Prefident of the Society 29
8. V I. A Letter from Mr. Andrew Ellicott, to Robert Patterfon ; in T-wo Parts 32
9. VII. Of the Aberration cf the Stars, Nutation of the Earth's Axis, and Semi-annual Equation, by Andrew Ellicott 51
10. VIII. A Letter from Mr. Andrew Ellicott, to Mr. Robert Patterfon. A Method of Calculating the Eccentric Anomaly of the Plan 67
11. IX. Method of raifug the common . Logarithm of any Number immediately, by David Rittenhoufe, Prefident of the Society 69
12. X. Experiments on Evaporation, by C. Wiftar, M. D 72
13. I. A Memoir concerning the Fafcinating Faculty •which has been afcibed to the Rattle-Snake, and other American Serpents• By Benjamin Smith Barton, M. D. 74
14. XII. Some account of an American Species of Dipus, or Jerboa. By, Benjamin Smith Barton, M. D. 114
15. XIII. A Letter from Mr. John Heckewelder, to Dr. Barton, giving fome account of the remarkable inJlinS of a bird called the Nine-Killer 124
16. XIV. An Enquiry into the caufes of the Infalubrity of flat and Marfhy Situations ; and directions for preventing or correBing the Effects thereof, by William Currie 127
17. XV. Defeription of a Machine for faving Per fins from the upper Stories of a Houfe on fire, by Nicholas Collin, D. D. the Inventor; tuitb a 'Drawing from the Model 143
18. XVI. A Difquifition on wool-hearing Animals, by Dr. James Anderfon, of North Britain, in a letter dated 6th December 1794 149
19. XVII. Later Communication by the Author on this Subject, 'with a Sample taken from the Fleece of a Sheep brought from Jamaica to England 153
20. XVIII. An eafy and accurate Method of adjufting the Glajes of Hadlef s Quadrant, on Land for the Back-Obfervation, by Robert Patterfon, in a Letter to Dr. David Rittenhoufe, Prefident of the Society 154
21. XIX. An Effay (ending to improve intelligible Signals, and to difcover an Univerfal Language. From an anonymous Correfpondent in France, (probably the Inventor of the Telegraph) tranflated from the French, 162
22. XX. Memoir on the Subjeä of a new Plant, growing in Pennfylvania, particularly in the Vicinity of Philadelphia, ly Mr.. Beauvois, 173
23. XXI. A Letter from Colonel Winthrop Sargent, to Dr. Benjamin Smith Barton, accompanying Drawings and fome Account of certain Articles, which -were taken out of an ancient Tumulus, or Grave, in the Weßern-Country 177
24. XXII. A Drawing of fome Utenfils, or Ornaments, taken from an old Indian Grave, at Cincinnati, County of Hamilton, and Territory of the United-States, North-weft of the River Ohio, Auguft 30th 1794. By Colonel Winthrop Sargent. Communicated by Benjamin Smith Barton, M. D. 179
25. XXIII. Obfervations and Conjetures concerning certain Articles which were taken out of an ancient Tumulus, or Grave, at Cincinnati, in the County of Hamilton, and Territory of the United-States, North-Weß of the River Ohio : in a letter from Benjamin Smith Barton, M. D. to the Reverend Joseph Prietley, L. L. D. F. R. S. &c. 181
26. XXIV. Barometrical Meafurement of the Blue-Ridge, Warm-Spring, and Allegbany Mountains, in Virginia, taken in the Summer of the year 1791, 216
27. XXV. Mifcellaneous Obfervations relative to the Weßern Parts of Andrew Ellicott 224
28. XXVI. Obfervations made on the Old French Landing at Prefqu' Ifle, to determinate the Latitude of Thown of Erie. In from Andew Ellicott, to Robert Paterfon, Secretary of the Society 231
29. XXVII. V Hints relative ta the Stimulant Effects of Camphor upon Vegetables. By Benjamin Smith Barton , M. IX 232
30. XXVIII. Supplementum Indie is Flora Lancaftrienfis. Autore HENRICO MUHIENBERG. Communicated by Dr. BARTON 235
31. XXX. A Memoir on the Difcovery of certain "Bones of a zuadrufed of the Clawed Kind in the Weftern Parts of Virginia., By THOMAS JEFFERSON, Efq. 246
32. XXXL A Letter from Mr. JOHN HECKEWELDER to BENJAMIN SMITH BARTON, M. D. containing an Account of an Animal called the Big Naked Bear. 260
33. XXXIL Experiments and Obfervations on Land and Sea Air. By ADAM SEYBERT, M. D. 262
34. XXXIII. Tranflation of a Memoir on a new Species of Siren. By M . de BEAUVOIS. 277
35. XXXV. Ohfervations intended to favour a fuppojition that the Black Color (as it is called) of the Negroes is derived from the LEPROSY. By DR. BENJAMIN RUSH. 289
36. XXXVL An Improvement in Boats, for River-Navigation, defcribed in a Letter to Mr. ROBERT PATTERSON, by NICHOLAS KING. 298
37. XXXVII. General Principles and Conflrtiction of a Sub-marine Vejfel, communicated by D. Bufbnell of Connecticut, the inventor, in a letter of Oflober, 1 7 8 7 , to T H O M A S JEFFERSON then Minijler Plenipotentiary of the United States at Paris. 303
38. XXXVIII. 'The defeription of a Mould-board of the leaft refiftence, and of the eafieft and moft certain conflruction, taken from a letter to Sir fohn Sinclair, Prefident of the board of agriculture at London. 313
39. XXXIX. Experiments upon Magnetifm. Communicated in a Letter to T H O M A S JEFFERSON, Prejident of the Philofophical Society, by the Rev. JAMES MADISON , Prejident of William and Mary College. 323
40. XL. Thermometrical Obfervations made at Fort Waßringtm, Commencing June 1790, and Ending April 1791. By Daniel Britt and G. Turner. To which are added, for fame time, the Rife and Fall of the Ohio. Communicated by G . Turne 329
41. XLI . Calculations relating to Griß and Saw Mills, for determining the quantity of Water neceffary io produce the defired effect when the Head and Fall are given in order to afcertain the dimenfions of a new invented Steam Engine, intended to give motion to Water-wheels in places -where there is no Fall, and but a very fmall Stream or Spring. By John Nancarrow. 348
42. XLII. MEMOIR ON AMPHIBIA. 362
43. XLIII. An Appendix to the two Articles in this Volume, (p. by DR. PRIESTLEY , in a Letter to B. S. BARTON, M. D. 382
44. LXIV. An Inquiry Into the comparative effects of the Opium Officinarum, extracted from the Papaver Somniferum or White Poppy of Linnaus ; and of that procured from the Laftuca Sativa, or common cultivated Lettuce of the fame author. By JOHN REDMAN GOXE, M. D. An Honorary Member of the Philadelphia Medical Society ; and a Senior Member of the Chemical Society of Philadelphia. 387
45. LXV. Experiments and obfervations, on the atmofphere of marjbes. By ADAM SEYBERT, M . D. 415
46. LXVI. An account of a Kettle for boiling Inflammable Fluids.—In a letter from THOMAS P. SMITH , to ROBERT PATTERSON. 431
47. LXVII. An Effay on a new Method of treating the Effufion which colletls under the Scull after Fractures of the Head. By J. DEVEZE, Officer of Healthy of the firft clafs, in the French Armies. 433
48. LXVIII. Memoir on ibe Sand-hills of Cape Henry in Virginia. By B. HENRY LATROBE , Engineer. 439
49. LXIX. Supplement to MR. LATROBE'S Memoir. 444
50. LXX. Account of CHRYSTALLIZED BASALTES found in Pennfylvania— By THOMAS P. SMITH. 445
51. LXXI. Obfervations for determining the Latitude and Longitude of the Town of Natchez—By Andrew Ellicot, Efq. Commiffioner on the part of the United States, for running the line of Demarkation between them and the Spaniß) Territory. Communicated to the Society by R. Patterson 447
52. LXXII. An Anfwer to D R . JOSEPH PRIESTLEY'S Considerations on the Dotrine of Pblogiftion, and the Decompofition of Water ; founded upon demonfirative Experiments. By J A M E S WOODHOUSE, M. D. ProfeiTor of Ghemiftry in the Univeriity of Pennfylvania, &c. 452
53. LXXIII. Philological View of fome very ¿indent Words in feveral Languages. By the Rev. NICHOLAS COLLIN, D. D. Rector of the Swedifh Churches in Pennfylvania. 476
54. LXXIV. MEMOIR on the Extraneous Foffils, denominated Mammoth Bones :' principally defigment principally that they are the. remains of more than one fpecies of non-defcript Animal. By GEORGE TURNER, Member of the A. P. S. Honorary and Correfponding Member of the Bath and Weft of England Society, &c. 510
55. LXXV. Defcription of a Speedy Elevator. By the Inventor, NICHOLAS COLLIN, D. D, with two drawings from A model, reprefenting it folded and wound up. 519
56. LXXVI A Defcription of the Bones depofited, by the Prefident, in the Mufeum of the Society and reprefented in the annexed plates. By C. Wis TAR, M. D. Adjunct Profeffor of Anatomy, &c. in the Univerfity of Pennfylvania. 526
57. Directions for placing the plated 532
58. ERRATA IN THIS VOLUME 533
59. CORRIGENDA of Errors unnoticed before 534
60. GENERAL INDEX 535