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
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.