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Hansen, Peter Andreas (1795-1874) astronomer
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Autograph letter signed to J.C. Adams

Motion of the moon. Quotes letter from Hansen on formulae he used. Requests further information on effects of one planet on motion of another.

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

Copy of letter to W.H.M. Christie

Knobel's Table of comparisons of Greenwich Observations and Hansen's tables. Letter or extract of letter transcribed for quotation in MacAlister's biography. Possible that this particular item is JCA's own file copy.

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

In French. Seeks opinion of Memoire sur les Satellites de Jupiter. Sends two papers from Memories de l'Academie de Belgique on the movement of stars in the solar system. Furthering work on Hansen on the relative movement of three bodies. Satellites of Jupiter has been awarded a Damoiseau prize by the Academie des Sciences.

Souillart, C (fl 1878-1893)

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 P. Hansen

Neptune. Transcript from Airy's correspondence files in RGO Archives, copied for D.MacAlister 1893-1894.

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

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