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Delaunay, Charles-Eugène (1816-1872) astronomer and mathematician Item
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Copy of letter to W. De La Rue

[JCA's comments on De La Rue's speech on awarding Gold Medal of RAS] Acknowledges copy of Hansen's letter sent. Disagrees with H's assertion that he never contested JCA's theory of the secular acceleration of the moon: H caused LeVerrier to attack JCA and Delaunay, and is now adapting his own theory without admitting it might be wrong.

Adams, John Couch (1819-1892) astronomer

Autograph letter signed to Eliza Adams

Encloses one letter of JCA's to LeVerrier, found by his daughter. Contact being made with Delaunay's family. Details of a paper to be included in the Collected Papers. Suggestion for a house which might suit EA.

Cayley, Arthur (1821-1895) mathematician

Copy of letter to W. De La Rue

Comments on De La Rue's speech on awarding Gold Medal of RAS to JCA. Whether a quotation from Herschel should be included. Whether LeVerrier should be mentioned in light of his and Delaunay's part in the controversy over the secular variation of the moon's mean motion. Accuracy of Hansen's and Plana's theories. Encloses copy of Delaunay's letter.

Adams, John Couch (1819-1892) astronomer

Draft autograph letter signed to Charles Delaunay

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

[second draft of 16/14/1] 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

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