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DCP-LETT-479

From:
Charles Robert Darwin
To:
Charles Babbage
Date:
19 [Feb 1839 - Aug 1842]
Source of text:
The British Library (Add MS 37191: 299)
Summary:

Asks to be allowed to bring his sister to CB’s party "that she may see the World".

Contributor:
Darwin Correspondence Project

Herschel1333

From:
William Henry Fox Talbot
To:
Sir John Herschel
Date:
[19 February 1839]
Source of text:
RS:HS 17.284
Summary:

Describes mediocre results obtained using ferrocyanate of potash for fixing image. Mentions some other methods, including his favorite, common salt. Asks JH to keep these secret.

Contributor:
John Herschel Project
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