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DCP-LETT-11

From:
Erasmus Alvey Darwin
To:
Charles Robert Darwin
Date:
[24 Jan 1825]
Source of text:
DAR 204: 9
Summary:

Asks CD to do an experiment for him.

Has found a curious stone in his fire.

Price’s iron in tea measured 13 per cent.

Contributor:
Darwin Correspondence Project

Herschel2994

From:
Sir John Herschel
To:
Wilhelm Struve
Date:
[24 January 1825]
Source of text:
RS:HS 17.106a (C: RS:HS 20.196)
Summary:

Asks WS for account of the performance of his new [Josef] Fraunhofer telescope. Corroborates WS's double star motion data, except for 70 Ophiuchi, where JH and [James] South find no motion. Asks for observational targets and urges care in WS's observational technique. Mentions WS's intention to undertake celestial zone with [F. W.] Bessel. Describes [Henry] Kater's 'floating collimator.'

Contributor:
John Herschel Project
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