From:
John Blackwall
To:
Charles Robert Darwin
Date:
18 Feb 1868
Source of text:
DAR 86: A2–3
Summary:
Proportion of sexes in spiders; coloration.
Contributor:
Darwin Correspondence Project
Showing 1–3 of 3 items
Proportion of sexes in spiders; coloration.
Has put question of proportion of sexes in insects to the Entomological Society. Quotes H. T. Stainton and F. Smith. Cites some cases mentioned by other members.
Is reading Variation; does not quite understand Pangenesis.
Discusses the flowers of, and cross- and self-fertilisation in, certain aquatic plants. Gives cases of dichogamy and perfect self-fertility.