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HENRY, Joseph (1797-1878). Contributions to Electricity and Magnetism. No. III.-On Electro-Dynamic Induction . Extract from: The Transactions of the American Philosophical Society . Vol. 6. Philadelphia: Printed by James Kay Jun. and Brother, 1839.
HENRY, Joseph (1797-1878). Contributions to Electricity and Magnetism. No. III.-On Electro-Dynamic Induction . Extract from: The Transactions of the American Philosophical Society . Vol. 6. Philadelphia: Printed by James Kay Jun. and Brother, 1839. 4 o (277 x 225 mm). Illustrations in text. (Some minor spotting.) Modern paper wrappers; quarter morocco box. Provenance : Reverend Professor Hitchcock (presentation inscription from the author on the title-page). FIRST EDITION, offprint issue, of the third part of Henry's Contributions . PRESENTATION COPY, inscribed to Reverend Professor Hitchcock on the title-page: "To the Rev. Professor Hitchcock with the respects of the author." Henry, a professor of natural philosophy at Princeton University and later the first secretary of the Smithsonian Institution, devoted a large part of his scientific research to studying the relationships between electricity, magnetism, light, and heat. One important contribution to this research was the discovery, independently of Michael Faraday, who working at the same time in England, that magnetic fields generate electricity. This copy could possibly inscribed to Edward Hitchcock (1793-1864), a Unitarian minister and professor of natural theology and geology at Amherst College. Both Hitchcock and Henry were founding members of the American Association for the Advancement of Science.