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From:
Darwin, Emma
To:
Darwin, W. E.
Date:
[c. 13 April 1862]
Source of text:
DAR 219.1: 53
Summary:

No summary available.

Contributor:
Darwin Family Letters
From:
Sir John Herschel
To:
George Biddell Airy
Date:
[13 April 1862]
Source of text:
RGO 6.200.18
Summary:

Responds carefully to the question of observational, and reduction, dates [see GA's 1862-4-12].

Contributor:
John Herschel Project