ARTICLE VIII. Observations to determine the Magnetic Dip at Baltimore, Philadelphia, New York, West Point, Providence, Springfield and Albany. By A. D. Bache, Professor of Natural Philosophy and Chemistry, and Edward H. Courtenay,* Professor of Mathematics, m the University of Pennsylvania. Read November 7th, 1834.

Kapitel in diesem Buch

1. Frontmatter I
2. EXTRACT FROM THE LAWS OF THE SOCIETY RELATING TO THE TRANSACTIONS VII
3. OFFICERS OF THE AMERICAN PHILOSOPHICAL SOCIETY FOR THE YEAR 1837. IX
4. LIST OF MEMBERS OF THE AMERICAN PHILOSOPHICAL SOCIETY XI
5. OBITUARY NOTICE XIII
6. CONTENTS XV
7. ARTICLE I. On the Diurnal Variation of the Horizontal Needle. By Alexander Dallas Bache, Professor of Natural Philosophy and Chemistry in the University of Pennsylvania 1
8. ARTICLE II. Observations on tht Naiades; and Descriptions of New Species of that, and other Families. By Isaac Lea. Read before the American Philosophical Society March 16, 1832. 21
9. ARTICLE III. On the Visceral Anatomy of the Python (Cuvier), described by Daudin as the Boa Reticulata. By J. P. Hopkinson, M.D. and J. Pancoast, M.D. Read before the American Philosophical Society November 2, 1832. 117
10. ARTICLE IV. On the Longitude of the Hall of the American Philosophical Society, deduced from an Occultation of Aldebaran observed by S. C. Walker January 5th 1830. Read before the American Philosophical Society October 18th 1833. 131
11. ARTICLE V. On the Crystals developed in Vermiculite by Heat. By Andres Del Rio, Professor of Mineralogy in the Mexican School of Mines. Read before the American Philosophical Society November 1st, 1833. 133
12. ARTICLE VI. Collections towards a Flora of the Territory of Arkansas. By Thomas Nuttall. Read before the American Philosophical Society April 4, 1834. 135
13. ARTICLE VII. A Remarkable Arrangement of Numbers, constituting a Magic Cyclovolute. By E. Nulty, Philadelphia. Read before the American Philosophical Society, June 9,1th, 1834. 201
14. ARTICLE VIII. Observations to determine the Magnetic Dip at Baltimore, Philadelphia, New York, West Point, Providence, Springfield and Albany. By A. D. Bache, Professor of Natural Philosophy and Chemistry, and Edward H. Courtenay,* Professor of Mathematics, m the University of Pennsylvania. Read November 7th, 1834. 205
15. ARTICLE IX. Contributions to Electricity and Magnetism. By Joseph Henry, Professor of Natural Philosophy in the College of New Jersey, Princeton, late of the Albany Academy. 211
16. ARTICLE X. Contributions to Electricity and Magnetism. By Joseph Henry, Professor of Natural Philosophy in the College of New Jersey, Princeton, late of the Albany Academy. 215
17. ARTICLE XI. Collection of Observations on the Solar Eclipse of November 30th, 1834, made at Philadelphia, Haverford, West-Hills, Baltimore, the University of Virginia, Norfolk, Cincinnati and Nashville. Reported March 6th, 1835. 225
18. ARTICLE XII. De Lingua Othomitorum Dissertatio; Auctore Emmanuele Naxera, Mexicano, Academise, Litterarise Zacateccirum Socio. Communicated to the American Philosophical Society, 6th March 1835. 241
19. ARTICLE XIII. Practical Rule for Calculating, from the Elements in the Nautical Almanac, the Circumstances of an Eclipse of the Sun, for a Particular Place. By John Gummere, Teacher of Natural Philosophy and Mathematics in the Friends' School at Haverford, Pennsylvania. Mead March 6th, 1S35. 289
20. ARTICLE XIV. Contributions to the Geology of the Tertiary Formations of Virginia. By William B. Rogers, Professor of Natural Philosophy in the University of Virginia, and Henry D. Rogers, Professor of Geology in the University of Pennsylvania. Read May 5th, 1835. 311
21. ARTICLE XV. On the Difference of Longitude of several places in the United States, as determined by observations of the Solar Eclipse of November 30th, 1834. By Edward H. Courtenay, Professor of Mathematics in the University of Pennsylvania. Read October 16th, 1835. 335
22. ARTICLE XVI. Observations on Sulphurous Ether, and Sulphate of Etherine (the true Sulphurous Ether). By R. Hare, M. D., Professor of Chemistry in the University of Pennsylvania. 339
23. ARTICLE XVII. Of the Reaction of the Essential Oils with Sulphurous Acid, as evolved in union with Ether in the process of Etherification, or otherwise. By R. Hare, M. D., fyc., fyc., fyc. 347
24. ARTICLE XVIII. Of Sassarubrin, a Resin evolved by Sulphuric Acid from Oil of Sassafras, which is remarkable for its efficacy in Reddening that Acid in its concentrated state. By R. Hare, M. D., 4*c., fyc., fyc 353
25. ARTICLE XIX . Process for Nitric Ether, or Sweet Spirits of Nitre, by means of an approved Apparatus. By R. Hare, M. D., fyc., fyc., fyc. 355
26. ARTICLE XX. Description of an Electrical Machine, with a Plate four feet in diameter, so constructed as to be above the Operator: also of a Battery Discharger employed therewith: and some Observations on the Causes of the Diversity in the Length of the Sparks erroneously distinguished by the terms Positive and Negative. By R. Hare, M. D., fyc., Sec., Sfc. 359
27. ARTICLE XXI. On the Causes of the Tornado, or Water Spout. By R. Hare, M. DSfc., Sfc., Sfc. 369
28. ARTICLE XXII. Description of an Mr Pump of a new construction, which acts either as an Air Pump, or a Condenser, or as both ; enabling the operator to exhaust, to condense, to transfer a Gas from one cavity to another, or to pass it through a Liquid. By R. Hare, M. D., 4'c., fyc., fyc. 379
29. ARTICLE XXIII. Of an Improved Barometer Gage Eudiometer. By R. Hare, M. D., fyc., fyc., Sfc. 387
30. ARTICLE XXIV. On the Cause of the Collapse of a Reservoir while apparently subjected within to great Pressure from a Head of Water. By R. Hare, M. D., fyc., fyc., Sfc. 393
31. ARTICLE XXV. Sundry Improvements in Apparatus, or Manipulation. By R. Hare, M. D., Sfc., Sfc.j S 397
32. ARTICLE XXVI. Notes and Diagrams, illustrative of the Directions of the Forces acting at and near the surface of the Earth, in different parts of the Brunswick Tornado of June 19 th 1835. By A. D. Bache, Professor of Natural Philosophy and Chemistry in the University of Pennsylvania ; one of the Secretaries of the American Philosophical Society. Read April Zd 1836. 407
33. ARTICLE XXVII. Deductions from Observations made, and Facts collected on the path of the Brunswick Spout of June 19/A, 183 5. By James P. Espy, Member of the American Philosophical Society. Bead April 15th, 1836 419
34. A R T I C L E XXVIII. On the Relative Horizontal Intensities of Terrestrial Magnetism at several Places in the United States, with the Investigation of Corrections for Temperature, and Comparisons of the Methods of Oscillation in Full and in Rarefied Air. By A. D. Baehe, Professor of Natural Philosophy and Chemistry, and Edward H. Courtenay, Professor of Mathematics, in the University of Pennsylvania. Read May 6/A, 1836. 425
35. DONATIONS Received by the American Philosophical Society, since the Publication of Vol. IV.—New Series. 457