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Darwin, C. R. in author 
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From:
Charles Robert Darwin
To:
Unidentified
Date:
[1872 or later?]
Source of text:
The British Library (Surrogate RP 8051)
Summary:

Queries about the pitch of children’s crying.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Unidentified
Date:
8 Jan [1872]
Source of text:
American Philosophical Society (Mss.B.D25.405)
Summary:

Declines to join movement; has not sufficiently considered subject.

Contributor:
Darwin Correspondence Project