John Ewing notebooks on astronomy and physics, 1784-1796.

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Ewing, John, 1732-1802. John Ewing notebooks on astronomy and physics, 1784-1796.

John Ewing notebooks on astronomy and physics, 1784-1796.

http://www.worldcat.org/oclc/122620904

Folder 1 contains Ewing's notebook of astronomical tables for 1784 and astronomical observations from July 17-September 5, 1784 including "a comparison of the correspondent observations made at Wilmington [De.] and ye S. West corner of Pennsylvania," regarding a boundary dispute. One leaf laid in indentifies the observers as Ewing, Ellicott, Hutchins, and Madison. Total of 4 leaves laid in. Folder 2 contains Ewing's notebook of astronomical tables for 1790; the final third of the notebook contains a copy of "de la Caile's catalogue of ... Decl[ensions] of Stars, for 1788, of 405 Stars." Three leaves laid in include a notarized certificate identifying Hugh Maffet [or Maffit], born in Philadelphia and baptized in Rev. Ewing's church, signed by Robert Maffet, Hugh's father, and John Ewing, pastor, 13 September 1796 (with a description of his complexion, hair coloring, and scars); document signed by John Ewing regarding payment of his dividends from Insurance Company of North America, August 1796; and an envelope or wrapper dated 1845, addressed to Prof. Reed and Prof. Frazer (both at U. Pennsylvania), with the "compliments of [I.] M. Pettit" (donor?). Folder 3 contains Ewing's notebook, pages numbered 9-42, with questions and answers, on, for example, Equable Motion, Projectiles, Specific Gravity, and Hydrostatics. With 8 unnumbered pages (4 leaves, loose) of lecture notes on "The Descent of Bodies" and on Mechanics. With 4 pages (2 leaves, loose) of lecture notes on "Central Forces."

3 items (3 v. plus 7 leaves)

University of Pennsylvania Libraries, Van Pelt Library