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Babbage, Charles (1791-1871) mathematician
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Copy of letter to S. Newcomb

Details of forthcoming sale of Babbage's mathematical books. Death of Delaunay. Letter or extract of letter transcribed for MacAlister's biography.

Adams, John Couch (1819-1892) astronomer

Autograph letter signed to J.C. Adams

Acknowledges the abstract sent [of paper on Neptune?] Requests further paper on Neptune to keep JCA's name before the world; suggests on the effect of the hypothesis of double periodic time. Intends to publish letter of comment on Babbage's letter to The Times of a month ago.

Sheepshanks, Richard (1794-1855) astronomer