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Darwin, C. R. in correspondent 
Doubleday, Henry in correspondent 
1850-1859::1857::01 in date 
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From:
Charles Robert Darwin
To:
Henry Doubleday
Date:
8 Jan [1857]
Source of text:
Dr Heather Whitney (private collection)
Summary:

Thanks for a kind note, and asks not to answer until better.

Contributor:
Darwin Correspondence Project
From:
Henry Doubleday
To:
Charles Robert Darwin
Date:
26 Jan 1857
Source of text:
DAR 162: 235
Summary:

Sends specimens of Tortrix, which illustrate the extraordinary variation of markings in two or three species. In every family of Lepidoptera there seem to be species extremely prone to vary and in some localities they vary more than in others.

Contributor:
Darwin Correspondence Project