Academy of Natural Sciences of Philadelphia
Found in 3 Collections and/or Records:
The majority of correspondence included is business correspondence related to Fisher's mathematics and his book, "Dial of the Seasons, or a Portraiture of Nature," on Fisher's theory of the effect of "the angles of incidence of the meridian sunlight." There are also a small number of letters of personal correspondence, generally letters of introduction for friends or family traveling to Philadelphia or New York.
The collection consists almost entirely of autograph letters, signed, mostly addressed to Reuben Haines, 1793-1834, about one-third addressed to him personally, the other two-thirds addressed to him as Corresponding Secretary of the Academy of Natural Sciences of Philadelphia. The writers of the latter were scientists, scholars, and statesmen from all over the world, including John James Audubon, 1785-1851, Thomas Jefferson, 1743-1826, Rembrandt Peale, 1778-1860, and many others.