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Marshall, William in correspondent 
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From:
Charles Robert Darwin
To:
William Adolf Ludwig (William) Marshall
Date:
29 May 1875
Source of text:
American Philosophical Society (Mss.B.D25.469)
Summary:

Comments on WM’s paper about ostrich feathers.

Contributor:
Darwin Correspondence Project
From:
William Adolf Ludwig (William) Marshall
To:
Charles Robert Darwin
Date:
2 June 1875
Source of text:
DAR 171: 48
Summary:

Discusses feather as case of evolutionary atavism.

Will soon publish on siliceous sponges

and the skin of caterpillars.

Contributor:
Darwin Correspondence Project
From:
William Adolf Ludwig (William) Marshall
To:
Charles Robert Darwin
Date:
21 Aug 1875
Source of text:
DAR 171: 49
Summary:

Doubts ostrich descended from reptiles. Its ancestors true birds. Of course, all birds descended from reptiles. Compares foetus of birds to that of reptiles.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
William Marshall
Date:
9 Apr [1860]
Source of text:
DAR 146: 336
Summary:

Asks for information about Anacharis.

Contributor:
Darwin Correspondence Project
From:
William Marshall
To:
Charles Robert Darwin
Date:
12 June 1864
Source of text:
DAR 109: A88–9
Summary:

Informs CD of two distinct forms of Plantago lanceolata.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
William Adolf Ludwig (William) Marshall
Date:
6 June [1872]
Source of text:
Smithsonian Libraries and Archives (Dibner Library of the History of Science and Technology MSS 405 A. Gift of the Burndy Library)
Summary:

Thanks WALM for having sent interesting publications, especially the one on relation of structure of man to lower animals,

and just a few days since, on protuberances on bird skulls. WALM’s facts on the latter subject have an important bearing on the acquisition of sexual characters. CD is pleased that the influence of sexual selection is admitted.

Contributor:
Darwin Correspondence Project
From:
William Adolf Ludwig (William) Marshall
To:
Charles Robert Darwin
Date:
15 Oct 1872
Source of text:
DAR 171: 47
Summary:

WM converted to belief in evolution by experience of museum work.

Describes protective coloration of coots’ eggs.

Contributor:
Darwin Correspondence Project