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From Edwin Brown 14 February 1863
Summary
Sends copy of his second paper on mutability of race forms ["On the mutability of species", Proceedings of the Northern Entomological Society, 22 December 1862, pp.4–26].
On tactics of his opponents.
He and Bates have divided up Carabidae and Vanessa for studying relationship of forms.
| Author: | Edwin Brown |
| Addressee: | Charles Robert Darwin |
| Date: | 14 Feb 1863 |
| Classmark: | DAR 160: 325 |
| Letter no: | DCP-LETT-3983 |
