From:
Charles Robert Darwin
To:
Otto Staudinger
Date:
6 May [1868]
Source of text:
DAR 147: 491
Summary:
Asks about the ratio of male to female Lepidoptera.
Contributor:
Darwin Correspondence Project
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Asks about the ratio of male to female Lepidoptera.
Thanks for information on sex ratios of Lepidoptera.
Agrees that entomologists have best means of proving derivation of species.