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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
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

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

To Henry Doubleday   1 March [1868]

Summary

Has been interested in copy of HD’s letter to H. T. Stainton on numerical proportions of the sexes of insects. Do they vary during different years?

Does he have opinions about the courtships of butterflies?

Will send a copy of his paper on Primula when it is published. [See 5997.]

Author:  Charles Robert Darwin
Addressee:  Henry Doubleday
Date:  1 Mar [1868]
Classmark:  George W. Platzman (private collection)
Letter no:  DCP-LETT-5966A

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

To Henry Doubleday   20 March [1868]

Summary

CD asks about HD’s observation of sexual call of Coleoptera.

Also comments on statements by collectors that they breed more females than males from caterpillars. CD had thought this might be accounted for by the collection of largest and finest caterpillars, but Alexander Wallace says the collectors take large and small equally. Does HD agree with Wallace?

Author:  Charles Robert Darwin
Addressee:  Henry Doubleday
Date:  20 Mar [1868]
Classmark:  American Philosophical Society (Getz 6027)
Letter no:  DCP-LETT-6027

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

To Henry Doubleday   15 April [1868]

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Summary

Submits lists of insects [missing] for correspondent to check whether brightly coloured. Wants to determine whether there is any relation between bright colouring, whether in both sexes or one alone, and an unequal number of males and females.

Author:  Charles Robert Darwin
Addressee:  Henry Doubleday
Date:  15 Apr [1868]
Classmark:  DAR 82: 121-2
Letter no:  DCP-LETT-6123

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 (13)
Correspondent
Date
1857 (4)
1860 (2)
1868 (7)
letter