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From:
Giovanni Damiani
To:
Alfred Russel Wallace
Date:
23 January 1872
Source of text:
British Library, The: BL Add. 46435 ff. 236-237
Summary:

No summary available.

Contributor:
Alfred Russel Wallace Correspondence Project
From:
Charles Robert Darwin
To:
William Erasmus Darwin
Date:
23 Jan [1872]
Source of text:
Natural History Museum, Library and Archives (General Special Collections MSS DAR 34)
Summary:

Discusses earthworm activity observed in old ploughed fields.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Francis Galton
Date:
23 Jan [1872]
Source of text:
UCL Library Services, Special Collections (GALTON/3/2/2/12 Letter 1)
Summary:

His rabbits have lost their patches and are grey.

Has FG seen William Crookes [spiritualist]?

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Raphael Meldola
Date:
23 Jan [1872]
Source of text:
Oxford University Museum of Natural History (Hope Entomological Collections 1350: Hope/Westwood Archive, Darwin folder)
Summary:

Discusses the problems of mimicry as related to natural selection; the general variability of colour as a character; and the conditions necessary for natural selection to fix firmly a character.

Encloses a Fritz Müller letter speculating that organisms respond to certain colours because of the prevalence of those colours in their environment.

Contributor:
Darwin Correspondence Project
From:
Bartholomew James Sulivan
To:
Charles Robert Darwin
Date:
23 Jan 1872
Source of text:
DAR 177: 297
Summary:

Louis Agassiz is going on a voyage to the Falklands, and BJS wonders whether it is worth while telling him of the Gallegos fossil bed so that he can investigate.

Contributor:
Darwin Correspondence Project