St John‘s College Personal Collections

Draft? autograph letter signed to Charles Delaunay

Adams/Box 16/18/2
Item
4 July 1860

Letter of introduction for Pierce. Plana convinced of JCA's and CD's expression of the secular acceleration of moon's mean motion. Hansen and LeVerrier might yet be convinced.

Adams, John Couch (1819-1892) astronomer

Draft? autograph letter signed to Charles Delaunay

Adams/Box 16/20/3
Item
20 Dec. 1865

Part of Papers of John Couch Adams

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

Draft? autograph letter signed to Charles Delaunay

Adams/Box 16/22/1
Item
5 Mar. 1870

Part of Papers of John Couch Adams

Congratulations on CD's appointment as Director of the Imperial Observatory. JCA's gratification at awarding medal of RAS to CD.

Adams, John Couch (1819-1892) astronomer

Draft autograph letter signed to Charles Delaunay

Adams/Box 16/14/1
Item
24 Mar. 1857

Part of Papers of John Couch Adams

Another draft for same letter at 16/14/2. See 36/16/1 for French translation, of same letter. Acknowledgement of offer of corresponding membership of [French] Academy of Sciences. Sends offprints of published papers. Description of work forthcoming. Defence of work on lunar theory against Plana.

Adams, John Couch (1819-1892) astronomer

Draft? autograph letter signed to Charles Delaunay

Adams/Box 16/16/2
Item
22 Apr. 1859

Part of Papers of John Couch Adams

See 36/17/3 for French translation. CD's letter verified JCA's coefficients in expression of secular acceleration of moon's mean motion. JCA has discovered error and corrected it, in his own work.

Adams, John Couch (1819-1892) astronomer

Draft? autograph letter signed to Charles Delaunay

Adams/Box 16/17/3
Item
6 June 1860

Part of Papers of John Couch Adams

See 36/18/2 for French translation. Sends copies of reply to Pontecoulant, Plana etc: one for CD personally, one for the French Academy of Sciences.

Adams, John Couch (1819-1892) astronomer

Draft? autograph letter signed to Charles Delaunay

Adams/Box 16/19/1
Item
21 Mar. 1861

Part of Papers of John Couch Adams

Acknowledgement of copies sent by CD of investigation into Hansen's long inequalities and corrections of LeVerrier's Annales, and CD's volume on the Theory of the Moon. Praise of CD's method.

Adams, John Couch (1819-1892) astronomer

Draft? autograph letter signed to Charles Delaunay

Adams/Box 16/19/2
Item
1 Apr. 1862

Part of Papers of John Couch Adams

See 16/19/3 for another copy. Authorisation for CD to publish JCA's expression of coefficient of principal term of the latitude [of the moon?]. Adds equation for principal inequality of the true latitude, and comparisons with Plana and Pontecoulant's results.

Adams, John Couch (1819-1892) astronomer

Draft? autograph letter signed to Charles Delaunay

Adams/Box 16/19/4
Item
9 Aug. 1862

Part of Papers of John Couch Adams

Invitation for CD to come to meeting of British Association in Cambridge, Oct 1862, and to stay at the Observatory. Hopes also to be entertaining Airy.

Adams, John Couch (1819-1892) astronomer

Draft? autograph letter signed to Charles Delaunay

Adams/Box 16/21/1
Item
23 Mar. 1867

Part of Papers of John Couch Adams

Sends elements of November Meteors from Observation, for communication to French Academy of Sciences. Comparison with other observations.

Adams, John Couch (1819-1892) astronomer

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