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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
Document type
letter (4)
Correspondent
Darwin, C. R.[X]
Doubleday, Henry[X]
Date
1857
01 (2)
02 (2)
letter