From:
Charles Robert Darwin
To:
Agnes Huschke; Agnes Haeckel
Date:
[before 3 Mar 1873]
Source of text:
Ernst-Haeckel-Haus (Bestand A [34831])
Summary:
No summary available.
Contributor:
Darwin Correspondence Project
No summary available.
No summary available.
Although he believes in evolution, TM feels that natural selection is an inadequate cause;
nor is he satisfied with E. D. Cope’s law of acceleration and retardation.
Discusses some of his work relating to nutrition and sex and colour and sex.
Praise for and detailed comments on Expression.
Two cases of coloration in animals – one from sexual selection, the other helping to procure prey [see Descent, 2d ed., pp. 542–3].