Kapitel in diesem Buch

1. Frontmatter I
2. EXTRACT III
3. OFFICERS V
4. LIST OF MEMBERS VI
5. OBITUARY NOTICE VIII
6. CONTENTS IX
7. ARTICLE I. Description of New Freshwater and Land Shells 1
8. ARTICLE II. Descriptions of New North American Insects, and Observations on some already described 155
9. ARTICLE III. Notice of a Vein of Bituminous Coal, recently explored in the vicinity of the Havana, in the Island of Cuba 191
10. ARTICLE IV. Observations on the Changes of Colour in Birds and Quadrupeds 197
11. ARTICLE V. Determination of the Longitude of several Stations near the Northern Boundary of Ohio, from Transits of the Moon, and Moon-culminating Stars, observed in 1835, by Andrew Talcott, late Capt. U. S. Engineers 241
12. ARTICLE VI. On the Magnetic Dip at several places in the State of Ohio, and on the relative Horizontal Magnetic Intensities of Cincinnati and London 267
13. ARTICLE VII. New Formulae Relative to Comets 275
14. ARTICLE VIII. Account of a Tornado, which, towards the end of August 1838, passed over the suburbs of the City of Providence, in the State of Rhode Island, and afterwards over a part of the Village of Somerset. Also an Extract of a Letter on the same Subject from Zachariah Allen, Esq., of the City of Providence. Communicated 297
15. ARTICLE IX. Contributions to Electricity and Magnetism 303
16. ARTICLE X. Engraving and Description of an Apparatus for the Decomposition and Recomposition of Water, employed in the Laboratory of the Medical Department of the University of Pennsylvania 339
17. ARTICLE XI. Improved Process for obtaining Potassium 341
18. ARTICLE XII. Engraving and Description of a Rotatory Multiplier, or one in which one or more Needles are made to revolve by a Galvanic Current 343
19. ARTICLE XIII. Contributions to the Geology of the Tertiary Formations of Virginia.—Second Series 347
20. ARTICLE XIV. Contributions to the Geology of the Tertiary Formations of Virginia.—Second Series— Continued : Being a Description of several Species of Meiocene and Eocene Shells, not before described 371
21. ARTICLE XV. Report of the Committee on the Solar Eclipse of May 14 and 15, 1836 379
22. ARTICLE XVI. Abstract of Meteorological Tables in the possession of the American Philosophical Society 395
23. Donations to the Library and Cabinet 399
24. ERRATA 429