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From:
Sir John Herschel
To:
George Biddell Airy
Date:
[9 January 1843]
Source of text:
RGO 6.462.37
Summary:

Needs a good artisan to construct the framework of a solar spectrum photographic apparatus.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
George Biddell Airy
Date:
[19 January 1843]
Source of text:
RGO 6.368.660
Summary:

Intends to accept offer [see GA's 1843-1-18]; JH questions the correctness of P. S. Laplace's theory of capillary action.

Contributor:
John Herschel Project