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Delaunay, Charles-Eugène (1816-1872) astronomer and mathematician Item
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Autograph letter signed to J.C. Adams

Requests information on Gravitational Astronomy. 1. Lunar Theory; Delaunay Theorie du mouvement de la lune Vol.2 p 803. 2. Laplace on stability of solar system.

Airy, Sir George Biddell (1801-1892) Knight, astronomer

Copy of letter to C. Delaunay

See JCA's draft at 16/16/1; Delaunay's French translation at 36/17/2. Letter or extract of letter transcribed for MacAlister's biography.

Adams, John Couch (1819-1892) astronomer

Typed copy of letter to S. Newcomb

Comments on comparison of Hansen and Delaunay's lunar tables. Suggesting co-operative work between British and American Nautical Almanac offices. MS note by Newcomb at end giving permission for confidential sections to be published. See also JCA's draft at 16/49/1). Letter or extract of letter transcribed for MacAlister's biography.

Adams, John Couch (1819-1892) astronomer

Copy of letter to C. Delaunay

See JCA's draft at 16/16/2; Delaunay's French translation at 36/17/3. Letter or extract of letter transcribed for MacAlister's biography.

Adams, John Couch (1819-1892) astronomer

Draft? autograph letter signed to Charles Delaunay

Another copy of 16/20/2. Appreciation of CD's explanation of discrepancy between value of secular acceleration of moon's mean motion, and that derived from ancient eclipses. Likely to be attacked by Pontecoulant.

Adams, John Couch (1819-1892) astronomer

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