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DCP-LETT-5900

From:
William Henty
To:
Charles Robert Darwin
Date:
20 Feb 1868
Source of text:
DAR 166: 181, 183
Summary:

Has read CD’s inquiry about proportional numbers of males and females born to domestic animals [see 5863] and outlines his theory regarding the factors determining the sex of offspring.

Contributor:
Darwin Correspondence Project

DCP-LETT-5901

From:
John Lubbock, 4th baronet and 1st Baron Avebury
To:
Charles Robert Darwin
Date:
20 Feb 1868
Source of text:
DAR 170: 63
Summary:

Found [Variation] full of interest. Has not yet made up his mind about Pangenesis; wants to hear what can be said against it.

Contributor:
Darwin Correspondence Project

DCP-LETT-5902

From:
Roland Trimen
To:
Charles Robert Darwin
Date:
20 Feb 1868
Source of text:
DAR 85: B59–60a
Summary:

Proportion of sexes in butterflies; discussion of subject at meeting of Entomological Society, London.

Attraction of males by female Lasiocampa quercus. [see Descent 1: 311–12.]

Contributor:
Darwin Correspondence Project
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DCP-LETT-5904

From:
John William Douglas
To:
Charles Robert Darwin
Date:
20 Feb 1868
Source of text:
DAR 81: 87
Summary:

Notes on sexual differences in British Hemiptera.

Contributor:
Darwin Correspondence Project
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DCP-LETT-5903

From:
Henry Tibbats Stainton
To:
Charles Robert Darwin
Date:
20 Feb 1868
Source of text:
DAR 86: A6–7
Summary:

Sends a preliminary reply to CD’s query [5890]. Ten males to one female among captured micro-Lepidoptera. Six females to four or five males in those he has bred. HTS is aware this is diametrically opposed to information from [Alexander] Wallace and Bates, but the true proportion of sexes can only be ascertained by breeding.

Contributor:
Darwin Correspondence Project
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