From J. D. Hooker [11 April 1857]
Summary
JDH cites W. H. Harvey’s observations on Fucus and David Don’s on Juncus as examples of variations that are independent of climate. There are many such cases. Gives his working scheme for categorising variation.
| Author: | Joseph Dalton Hooker |
| Addressee: | Charles Robert Darwin |
| Date: | [11 Apr 1857] |
| Classmark: | DAR 104: 198–201 |
| Letter no: | DCP-LETT-2074 |
