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Darwin, C. R. in addressee 
1870-1879::1872::02 in date 
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From:
Charles Nordhoff
To:
Charles Robert Darwin
Date:
27 Feb 1872
Source of text:
DAR 172: 72
Summary:

Reports the case of a cockerel raised in isolation from other cocks which repeatedly attempted, but failed, to crow properly.

Also discusses behaviour in horses; one male will "look after" 20–25 females.

Contributor:
Darwin Correspondence Project
From:
William Erasmus Darwin
To:
Charles Robert Darwin
Date:
[29 Feb 1872]
Source of text:
DAR 162: 102
Summary:

Amount of clay present in certain chalk samples.

Contributor:
Darwin Correspondence Project
From:
Thomas Campbell Eyton
To:
Charles Robert Darwin
Date:
29 Feb [1872]
Source of text:
DAR 163: 43
Summary:

Disagrees with the "Darwinian theory"; does not see evidence enough to support it. Will send CD any notes he makes for or against.

Contributor:
Darwin Correspondence Project
From:
Charles Lyell, 1st baronet
To:
Charles Robert Darwin
Date:
29 Feb 1872
Source of text:
The University of Edinburgh Centre for Research Collections (Lyell collection Coll-203/B9)
Summary:

Has been looking for something about crop rotation in Origin and Variation.

Contributor:
Darwin Correspondence Project