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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

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

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 (Mss.B.D25.)
Letter no:  DCP-LETT-6027

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
Document type
letter (5)
Author
Darwin, C. R.[X]
Addressee
Correspondent
Darwin, C. R.[X]
Doubleday, Henry[X]
Date
1857 (2)
1868 (3)
letter