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De La Rue, Warren (1815-1889) chemist and astronomer
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Pressed copy of autograph letter signed to W. De La Rue

In French. Sent with De La Rue to JCA 2 Feb.1866 16/11/3. Comments on De La Rue's speech on awarding Gold Medal of RAS to JCA. On the history of the secular variation of the moon's mean motion. PAH never contested JCA's ideas on the secular equations of the moon. On the accuracy of tables of the moon or planets.

Hansen, Peter Andreas (1795-1874) astronomer

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

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

Copy of letter to W. De La Rue

Incomplete. [JCA's comments on De La Rue's speech on awarding Gold Medal of RAS] Theory of moon: where work of Plana and Damoiseau is incorrect and how it might be improved. Errors of Hansen's ditto. Plana's original reception of JCA's theory of the moon.

Adams, John Couch (1819-1892) astronomer

Autograph letter signed to J.C. Adams

Airy received letter from De La Rue with JCA's comments on Hansen's investigation of Secular Acceleration of Moon's Mean Motion. Discusses error of Hansen's.

Stone, Edward James (1831-1897) astronomer

Autograph letter signed to J.C. Adams

W.De La Rue: information for award [medal from Royal Society] Kew O. magnetic observations. Encloses letter Airy to Gassiot. (13/23/3)

Sabine, Sir Edward (1788-1883) Knight, army officer and physicist

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