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Challis, James (1803-1882) astronomer and physicist
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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

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 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

Draft autograph letter signed to James Simms

Not clear to whom addressed: presumed Simms from content (see correspondence re this telescope in 1868-). Requires a case for meteoroscope. Gives specification for object glass for proposed meridian telescope for CO, after consultation with Challis, and further equipment. Requires new quotation.

Adams, John Couch (1819-1892) astronomer

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