From:
William Thierry (William) Preyer
To:
Charles Robert Darwin
Date:
[before 17 Feb 1870]
Source of text:
DAR 261.11: 21 (EH 88206073)
Summary:
Notes the differences in haemoglobin between species; this proves, to WP, that natural selection does not act only on morphological development.
Remarks on the differences and similarities in the effects of prussic acid on different groups of animals.
Questions CD on his early education and influences.
Contributor:
Darwin Correspondence Project