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From:
Charles Robert Darwin
To:
Thomas Henry Huxley
Date:
20 Mar [1860]
Source of text:
Imperial College of Science, Technology and Medicine Archives (Huxley 5: 160)
Summary:

Invites THH to join Hooker at Down on 5 April.

Contributor:
Darwin Correspondence Project
From:
Thomas Goodchild
To:
Sir John Herschel
Date:
[20 March 1860]
Source of text:
RS:HS 9.102
Summary:

Sending a descriptive pamphlet of an optical invention of his own for simple experiments with color.

Contributor:
John Herschel Project