From:
Charles Robert Darwin
To:
Roland Trimen
Date:
14 Apr [1868]
Source of text:
Royal Entomological Society (Trimen papers, box 21: 68)
Summary:
Has tried using dealers’ price-lists as a guide to sex ratios in Lepidoptera; finds numerous cases in which the sexes bring different prices and in virtually all of them the males are cheaper. This seems to confirm the impression of the field collectors.
Wishes RT good luck with natural history in S. Africa.
Contributor:
Darwin Correspondence Project