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DCP-LETT-654

From:
Charles Robert Darwin
To:
William Darwin Fox
Date:
[9 Dec 1842]
Source of text:
Christ’s College Library, Cambridge (MS 53 Fox 64)
Summary:

CD likes Down House, describes countryside.

Tells of Edward Charlesworth fracas at Geological Society.

Is at work on Volcanic islands.

Contributor:
Darwin Correspondence Project

Herschel1160

From:
Sir John Herschel
To:
Robert Hunt
Date:
[1842-12-9 or later]
Source of text:
RS:HS 25.14.15
Summary:

Is anxious for some means to be developed to get a measurable quantity [preferably by weight] from the action of a beam of light on a surface. JH has been experimenting in photography with 'flouric' compounds.

Contributor:
John Herschel Project
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