To Henry Doubleday [before 5 February 1857]
Summary
Have all varieties been bred from the same set of eggs so that there can be no doubt they are all the same species?
| Author: | Charles Robert Darwin |
| Addressee: | Henry Doubleday |
| Date: | [before 5 Feb 1857] |
| Classmark: | American Philosophical Society (Mss.B.D25.) |
| Letter no: | DCP-LETT-2032 |
To Henry Doubleday 8 January [1857]
Summary
Thanks for a kind note, and asks not to answer until better.
| Author: | Charles Robert Darwin |
| Addressee: | Henry Doubleday |
| Date: | 8 Jan [1857] |
| Classmark: | Dr Heather Whitney (private collection) |
| Letter no: | DCP-LETT-2037F |
From Henry Doubleday 26 January 1857
Summary
Sends specimens of Tortrix, which illustrate the extraordinary variation of markings in two or three species. In every family of Lepidoptera there seem to be species extremely prone to vary and in some localities they vary more than in others.
| Author: | Henry Doubleday |
| Addressee: | Charles Robert Darwin |
| Date: | 26 Jan 1857 |
| Classmark: | DAR 162: 235 |
| Letter no: | DCP-LETT-2044 |
From Henry Doubleday 5 February 1857
Summary
The variations of Peronea caused A. H. Haworth and J. F. Stephens to create 30 or 40 species based on colour and markings. HD was first to be convinced these would be reduced to two.
Discusses species that closely resemble one another;
cites species that differ in variation in different localities;
in some double-brooded species the broods differ markedly in size and colour.
Encloses his list of varieties of Peronea.
| Author: | Henry Doubleday |
| Addressee: | Charles Robert Darwin |
| Date: | 5 Feb 1857 |
| Classmark: | DAR 162: 236 |
| Letter no: | DCP-LETT-2047 |
| letter | (4) |
| Darwin, C. R. | (2) |
| Doubleday, Henry | (2) |
| Darwin, C. R. | (2) |
| Doubleday, Henry | (2) |
