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Description of New Freshwater and Land Shells

Authors: Isaac Lea

Published in Transactions of the American Philosophical Society, in 1839, in volume 6, pages 1-154

Created: 2026-05-26, modified: 2026-05-26

Descriptions of New North American Insects, and Observations on Some Already Described. By Thomas Say. Continued from Vol. IV., N. S., p. 470

Authors: Thomas Say

Published in Transactions of the American Philosophical Society, in 1839, in volume 6, pages 155-190

Created: 2026-05-26, modified: 2026-05-26

doi:10.2307/1005320

Notice of a Vein of Bituminous Coal, Recently Explored in the Vicinity of the Havana, in the Island of Cuba

Authors: Richard Cowling Taylor | Thomas G Clemson

Published in Transactions of the American Philosophical Society, in 1839, in volume 6, pages 191-196

Created: 2026-05-26, modified: 2026-05-26

doi:10.2307/1005321

Observations on the Changes of Colour in Birds and Quadrupeds

Authors: John Bachman

Published in Transactions of the American Philosophical Society, in 1839, in volume 6, pages 197-239

Created: 2026-05-26, modified: 2026-05-26

doi:10.2307/1005322

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, M. A. P. S, Late Capt. U. S. Engineers

Authors: Andrew Talcott | Sears C Walker

Published in Transactions of the American Philosophical Society, in 1839, in volume 6, pages 241-266

Created: 2026-05-26, modified: 2026-05-26

doi:10.2307/1005323

On the Magnetic Dip at Several Places in the State of Ohio, and on the Relative Horizontal Magnetic Intensities of Cincinnati and London. By John Locke, M. D., Professor of Chemistry and Pharm., Medical College of Ohio. In a Letter to John Vaughan, Esq., Librarian of the Am. Philos. Soc

Authors: John Locke

Published in Transactions of the American Philosophical Society, in 1839, in volume 6, pages 267-273

Created: 2026-05-26, modified: 2026-05-26

doi:10.2307/1005324

New Formulæ Relative to Comets

Authors: E Nulty

Published in Transactions of the American Philosophical Society, in 1839, in volume 6, pages 275-295

Created: 2026-05-26, modified: 2026-05-26

doi:10.2307/1005325

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 by Robert Hare, M. D., Professor of Chemistry in the University of Pennsylvania

Authors: Zachariah Allen | Robert Hare

Published in Transactions of the American Philosophical Society, in 1839, in volume 6, pages 297-301

Created: 2026-05-26, modified: 2026-05-26

doi:10.2307/1005326

Contributions to Electricity and Magnetism. By Joseph Henry, Professor of Natural Philosophy in the College of New Jersey, Princeton. No. III. On Electro-Dynamic Induction

Authors: Joseph Henry

Published in Transactions of the American Philosophical Society, in 1839, in volume 6, pages 303-337

Created: 2026-05-26, modified: 2026-05-26

doi:10.2307/1005327

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

Authors: R Hare

Published in Transactions of the American Philosophical Society, in 1839, in volume 6, pages 339-340

Created: 2026-05-26, modified: 2026-05-26

doi:10.2307/1005328

Improved Process for Obtaining Potassium

Authors: Robert Hare

Published in Transactions of the American Philosophical Society, in 1839, in volume 6, pages 341-342

Created: 2026-05-26, modified: 2026-05-26

doi:10.2307/1005329

Engraving and Description of a Rotatory Multiplier, or One in Which One or More Needles Are Made to Revolve by a Galvanic Current

Authors: R Hare

Published in Transactions of the American Philosophical Society, in 1839, in volume 6, pages 343-345

Created: 2026-05-26, modified: 2026-05-26

doi:10.2307/1005330

Contributions to the Geology of the Tertiary Formations of Virginia. Second Series

Authors: William B Rogers | Henry D Rogers

Published in Transactions of the American Philosophical Society, in 1839, in volume 6, pages 347-370

Created: 2026-05-26, modified: 2026-05-26

doi:10.2307/1005331

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

Authors: William B Rogers | Henry D Rogers

Published in Transactions of the American Philosophical Society, in 1839, in volume 6, pages 371-377

Created: 2026-05-26, modified: 2026-05-26

doi:10.2307/1005332