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Doubleday, Henry in correspondent 
1860-1869::1868::03 in date 
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DCP-LETT-5966A

From:
Charles Robert Darwin
To:
Henry Doubleday
Date:
1 Mar [1868]
Source of text:
George W. Platzman (private collection)
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.]

Contributor:
Darwin Correspondence Project

DCP-LETT-6027

From:
Charles Robert Darwin
To:
Henry Doubleday
Date:
20 Mar [1868]
Source of text:
American Philosophical Society (Mss.B.D25.)
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?

Contributor:
Darwin Correspondence Project

DCP-LETT-5997

From:
Henry Doubleday
To:
Charles Robert Darwin
Date:
8 Mar 1868
Source of text:
DAR 85: B47–8
Summary:

Proportion of sexes in Lepidoptera.

Sexual preference.

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

Contributor:
Darwin Correspondence Project
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DCP-LETT-6064

From:
Henry Doubleday
To:
Charles Robert Darwin
Date:
28 Mar 1868
Source of text:
DAR 82: A11–12, DAR 86: A94
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].

Contributor:
Darwin Correspondence Project
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