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Wallace, A. R. in correspondent 
1870-1879::1877::09 in date 
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From:
Alfred Russel Wallace
To:
Charles Robert Darwin
Date:
3 Sept 1877
Source of text:
DAR 106: B136–7
Summary:

Sexual selection, he thinks, must be left to others to settle. "Conscious" will be substituted for "voluntary" selection. Sound- and scent-producing organs attributed to "natural", not "conscious", selection.

Contributor:
Darwin Correspondence Project
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From:
Charles Robert Darwin
To:
Alfred Russel Wallace
Date:
5 Sept [1877]
Source of text:
The British Library (Add MS 46434)
Summary:

Further discussion of evidence for sexual selection. Prefers "conscious" to "voluntary" action. Distinguishes features that serve as charms and those that serve as challenges.

Contributor:
Darwin Correspondence Project