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From:
Unidentified
To:
Sir John Herschel
Date:
[1861 to 1864]
Source of text:
TxU:H/L-0761; Reel 1089
Summary:

Letter of introduction for William Walker, who wants to show Walker's nearly finished engraving, Distinguished Men of Science Living 1807-8, to JH.

Contributor:
John Herschel Project
From:
Unidentified
To:
Charles Robert Darwin
Date:
29 Apr 1864
Source of text:
DAR 174: 1
Summary:

On rereading the Origin, offers a criticism on two grounds: 1. Blending inheritance; 2. The tendency of species to elude competing species. Also competition within species eliminates the weak and thus preserves the species.

Contributor:
Darwin Correspondence Project
From:
Unidentified
To:
Charles Robert Darwin
Date:
6 Apr 1868
Source of text:
DAR 159: 139
Summary:

Gives details of some points that occurred to him while reading Variation, including observations on horses, cattle, silkworms, and hereditary baldness and disease.

Contributor:
Darwin Correspondence Project
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