From:
John Hellins
To:
Charles Robert Darwin
Date:
16 Dec 1868
Source of text:
DAR 85: B76–7, B84
Summary:
Results of his breeding have not borne out his opinion that females are more numerous in Lepidoptera [see Descent 1: 313]. Still convinced he is right, suggests only way to settle question is by controlled breeding of large numbers of each species.
Contributor:
Darwin Correspondence Project
