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Challis, James (1803-1882) astronomer and physicist Item
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Copy of paper to James Challis

"Suggestions for the examination of a portion of the heavens in search of the external planet which is presumed to exist and to produce disturbances in the motion of Uranus". [Neptune].

Transcript of RGO Archives 7/247 fol.1-4, copied for D.MacAlister 1893-1894.

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

Autograph copy of letter signed to J. Challis

Acknowledges copy of paper from Philosophical Magazine. Apologises for not making his criticisms clearer before. Sets them out. Regrets any offence caused; will put criticisms into writing for the Phil. Mag., as requested.

Adams, John Couch (1819-1892) astronomer

Copy of letter to James Challis

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

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

Copy of letter to James Challis

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

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

Copy of letter to J.W. Lubbock

Gresham Professorship. Challis's poor mathematics in latest paper. Letter or extract of letter transcribed for MacAlister's biography.

Adams, John Couch (1819-1892) astronomer

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