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From:
Otto Staudinger
To:
Charles Robert Darwin
Date:
15 May 1868
Source of text:
DAR 82: A103-6
Summary:

Has often thought CD would find vast material for his ideas in study of entomology and Lepidoptera. His price-list of specimens proves only that collectors of Lepidoptera catch more males than females, not that there are more. He accounts for this by the less active habits of the females. [See Descent 1: 312.]

Contributor:
Darwin Correspondence Project
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From:
John Harward
To:
Charles Robert Darwin
Date:
15 May 1868
Source of text:
DAR 166: 119
Summary:

On false claims that female cattle can be produced at will.

Contributor:
Darwin Correspondence Project