Search: Trimen, Roland in correspondent 
1860-1869::1868::02 in date 
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From:
Roland Trimen
To:
Charles Robert Darwin
Date:
10 Feb 1868
Source of text:
DAR 178: 186, DAR 84.1: 135b
Summary:

Sends prospectus of forthcoming work by his brother [Henry Trimen] and W. T. Thiselton-Dyer [Flora of Middlesex (1869)]. Hopes CD will subscribe.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Roland Trimen
Date:
12 Feb [1868]
Source of text:
Royal Entomological Society (Trimen papers, box 21: 64)
Summary:

Is interested in the relative numbers of males and females of all animals; wants any instances of males, or females, being in excess.

Contributor:
Darwin Correspondence Project
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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From:
Charles Robert Darwin
To:
Roland Trimen
Date:
21 Feb [1868]
Source of text:
Royal Entomological Society (Trimen papers, box 21: 65)
Summary:

RT’s argument about the Lasiocampa strikes him as very good; asks for any similar cases. Wonders whether male butterflies may serve more than one female.

Contributor:
Darwin Correspondence Project