From Asa Gray 1 June 1857
Summary
Comments on species with disjoined ranges; does not feel, despite CD’s expectations, that they tend to belong to small families.
Gives the proportion of U. S. trees in which the sexes are separate [see Natural selection, p. 62].
| Author: | Asa Gray |
| Addressee: | Charles Robert Darwin |
| Date: | 1 June 1857 |
| Classmark: | DAR 8: 47bA |
| Letter no: | DCP-LETT-2098 |
