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From:
John Dean Caton
To:
Charles Robert Darwin
Date:
17 Nov 1870
Source of text:
DAR 83: 172–4
Summary:

Observations on winter colour of coats of male and female elk,

spots on deer,

and tuft of hair on breasts of wild female turkeys.

Contributor:
Darwin Correspondence Project
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From:
Charles Robert Darwin
To:
William Ogle
Date:
17 Nov [1870]
Source of text:
DAR 261.5: 4 (EH 88205902)
Summary:

Thanks WO for information on platysma, which he did not know could be brought into voluntary action. Is coming to believe it has nothing to do with expression.

On the relation between white colouring and susceptibility to poisonous plants, CD suggests WO send his paper to J. Wyman and propose he investigate whether white as well as black pigs will eat paint-root.

Contributor:
Darwin Correspondence Project