To J. D. Hooker 5 June [1857]
Summary
Royal Society medals.
Correlation of variability and abnormal development is G. R. Waterhouse’s law. Relation of this law to polymorphism.
Colouring and marks of ancestral horse deduced from facts observed in pigeons.
| Author: | Charles Robert Darwin |
| Addressee: | Joseph Dalton Hooker |
| Date: | 5 June [1857] |
| Classmark: | DAR 114: 201 |
| Letter no: | DCP-LETT-2102 |
