From:
Carl Hensgen
To:
Charles Robert Darwin
Date:
23 July 1879
Source of text:
DAR 166: 147
Summary:
CH, a chemist interested in zoology, asks CD’s opinion of research programme described on enclosed memorandum. Programme involves investigation of ability of molluscs to build shells out of other carbon compounds in absence of calcium carbonate.
Contributor:
Darwin Correspondence Project