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From:
Charles Robert Darwin
To:
Charles Lyell, 1st baronet
Date:
22 May [1872]
Source of text:
American Philosophical Society (Mss.B.D25.416)
Summary:

Comments on migration as a factor in evolution. Suggests pamphlet by August Weismann on the subject [Über den Einfluss der Isolierung (1872)].

Contributor:
Darwin Correspondence Project
From:
Briton Riviere
To:
Charles Robert Darwin
Date:
22 May 1872
Source of text:
DAR 176: 178
Summary:

Will try again to draw the expression of a pleased dog.

Contributor:
Darwin Correspondence Project
Text Online
From:
Alfred Russel Wallace
To:
B. Charles Brough
Date:
22 May 1872
Source of text:
Brough, B. C. (1873). The non-convexity of water. A reply to Mr. Wallace. The Zetetic: A Monthly Journal of Cosmographical Science : 1 (7): 56-57 [p. 57]
Summary:

No summary available.

Contributor:
Alfred Russel Wallace Correspondence Project
From:
Charles Robert Darwin
To:
Unidentified
Date:
22 May 1872
Source of text:
DAR 221.5: 10
Summary:

Agrees to contribute £10 towards a new road in the area of Beckenham, although he doubts whether the road will be of much use to him.

Contributor:
Darwin Correspondence Project