To James Dwight Dana 21 December [1856]
Summary
Thanks for sending paper on geological development (Dana 1856). Discusses infertility of species. Discusses first part of Asa Gray’s paper (A. Gray 1856–7). Thanks for note on the Cave Rat. Discusses a new species of fossil cirripede, in the genus Chthamalus. Explains his interest in pigeon breeding.
| Author: | Charles Robert Darwin |
| Addressee: | James Dwight Dana |
| Date: | 21 Dec [1856] |
| Classmark: | Catherine Barnes (dealer) (2003) |
| Letter no: | DCP-LETT-2020F |
