From J. J. Weir 27 June 1870
Summary
On behaviour of birds when frightened and when threatening.
Purple Cytisus grafted onto yellow stock produces some yellow flowers.
Mutations in rabbits.
Cites case of variegated leaf form of one plant apparently spreading to a neighbour.
| Author: | John Jenner Weir |
| Addressee: | Charles Robert Darwin |
| Date: | 27 June 1870 |
| Classmark: | DAR 181: 82 |
| Letter no: | DCP-LETT-7247 |
