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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

From Henry Doubleday   3 May 1860

Summary

Has read Origin with pleasure.

Has performed many experiments which confirm his opinion that primrose, oxlip, and cowslip are three distinct species.

Author:  Henry Doubleday
Addressee:  Charles Robert Darwin
Date:  3 May 1860
Classmark:  DAR 162.2: 237
Letter no:  DCP-LETT-2781

From Henry Doubleday   16 May 1860

Summary

Answers CD’s questions about his experiments with primroses, cowslips, and oxlips. HD is aware experiments must often be repeated many times. Has never met with the oxlip except where primrose and cowslip grow together.

Author:  Henry Doubleday
Addressee:  Charles Robert Darwin
Date:  16 May 1860
Classmark:  DAR 162.2: 238
Letter no:  DCP-LETT-2804

From Henry Doubleday   8 March 1868

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Summary

Proportion of sexes in Lepidoptera.

Sexual preference.

Role of coloration [see Descent 1: 311–12].

Author:  Henry Doubleday
Addressee:  Charles Robert Darwin
Date:  8 Mar 1868
Classmark:  DAR 85: B47–8
Letter no:  DCP-LETT-5997

From Henry Doubleday   28 March 1868

Summary

On the proportion of sexes in moths; Lepidoptera females command higher prices; quotes Staudinger’s catalogue [see Descent 1: 311–12].

Ticking of Anobium tessellatum [see Descent 1: 385].

Author:  Henry Doubleday
Addressee:  Charles Robert Darwin
Date:  28 Mar 1868
Classmark:  DAR 82: A11–12, DAR 86: A94
Letter no:  DCP-LETT-6064

From Henry Doubleday   3 April 1868

Summary

Otto Staudinger’s catalogue shows prices of female Lepidoptera to be higher than those of males.

Author:  Henry Doubleday
Addressee:  Charles Robert Darwin
Date:  3 Apr 1868
Classmark:  DAR 81: 78, DAR 82: A8
Letter no:  DCP-LETT-6087

From Henry Doubleday   22 April 1868

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Summary

On proportion of sexes;

coloration of sexes in Lepidoptera.

Sexual attraction of female Saturnia carpini.

Author:  Henry Doubleday
Addressee:  Charles Robert Darwin
Date:  22 Apr 1868
Classmark:  DAR 82: A9–10
Letter no:  DCP-LETT-6139
Document type
letter (8)
Author
Addressee
Darwin, C. R.[X]
Correspondent
Darwin, C. R.[X]
Doubleday, Henry[X]
Date
1857 (2)
1860 (2)
1868 (4)
letter