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From Herbert Spencer   8 February 1868

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)].

Author:  Herbert Spencer
Addressee:  Charles Robert Darwin
Date:  8 Feb 1868
Classmark:  DAR 177: 227
Letter no:  DCP-LETT-5851
Document type
letter (1)
Author
Addressee
Correspondent
Darwin, C. R.[X]
Spencer, Herbert[X]
Date
letter