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From:
Sir John Herschel
To:
William Empson
Date:
[27 July 1850]
Source of text:
TxU:H/L-0146; Reel 1054
Summary:

[A. J.] Ellis was correct; JH used earlier version of proof by [C. F.] Gauss in Theoria Motus Corporum Coelestium [1809] and was not aware of newer proof. But Ellis's objection to JH's proof applies only to properties of space.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Empson
Date:
27 July [1859]
Source of text:
RS:HS 7.75
Summary:

Thanks for sending the note of A. J. Ellis. Comments on this and his own apparent mistake. Pleased to hear that the invalid is progressing. Their potato crop has an attack of the blight.

Contributor:
John Herschel Project
Document type
Transcription available