Search: Darwin, C. R. in addressee 
Weir, H. W. in author 
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From:
Harrison William Weir
To:
Charles Robert Darwin
Date:
28 Mar 1868
Source of text:
DAR 84.1: 86–7
Summary:

Recognition of colour by animals.

Contributor:
Darwin Correspondence Project
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From:
Harrison William Weir
To:
Charles Robert Darwin
Date:
23 Mar 1869
Source of text:
DAR 86: C10, DAR 84.1: 118
Summary:

Proportion of sexes in pigeons, pigs, and pheasants.

Sexual preferences of females.

Contributor:
Darwin Correspondence Project
From:
Harrison William Weir
To:
Charles Robert Darwin
Date:
7 May 1869
Source of text:
DAR 181: 71
Summary:

Daisies.

A tame rabbit with a litter of 18.

Contributor:
Darwin Correspondence Project
From:
Harrison William Weir
To:
Charles Robert Darwin
Date:
28 Mar 1871
Source of text:
DAR 181: 72
Summary:

Effects of first impregnation on litters from subsequent pregnancies.

Power of selective breeding to produce different varieties.

Contributor:
Darwin Correspondence Project