From:
Herbert Spencer
To:
Charles Robert Darwin
Date:
8 Feb 1868
Source of text:
DAR 177: 227
Summary:
Thanks CD for copy of Variation.
Discusses Pangenesis and considers CD’s "gemmules" comparable to his own hypothetical "physiological units" ["On alleged ""spontaneous generation"", and on the hypothesis of physiological units", appendix in The principles of biology, vol. 1 (1864)].
Contributor:
Darwin Correspondence Project
