Search: Darwin, C. R. in correspondent 
1880-1889::1881::04::16 in date 
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From:
Charles Robert Darwin
To:
George John Romanes
Date:
16 Apr 1881
Source of text:
American Philosophical Society (Mss.B.D25.587)
Summary:

Discusses concept of intelligence in his Earthworms manuscript.

Remarks on GJR’s work on echinoderms.

Comments on Wilhelm Roux [Der Kampf der Theile im Organismus (1881)].

Discusses animal instincts, citing Fabre’s description of sand-wasps.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
John Lubbock, 4th baronet and 1st Baron Avebury
Date:
16 Apr [1881?]
Source of text:
The British Library (Add MS 49645: 97-8)
Summary:

Suggests that the pappus of Compositae, when lying on ground, may absorb water which may function in seed germination.

Contributor:
Darwin Correspondence Project
From:
Ernst L. Zeuschner
To:
Charles Robert Darwin
Date:
16 Apr 1881
Source of text:
DAR 184: 8
Summary:

Sends pamphlet showing that magnetism is the fundamental element by which all is created and maintained.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Alexander Stephen Wilson
Date:
16 Apr 1881
Source of text:
DAR 148: 372
Summary:

Obliged for extract from Gardeners’ Chronicle about Russian wheat. "It is a capital instance of one var. gradually beating out another."

Cannot remember where he put G. Henslow’s note [on the cotyledon of grass embryos].

Contributor:
Darwin Correspondence Project
From:
Alexander Agassiz
To:
Charles Robert Darwin
Date:
16 Apr 1881
Source of text:
G. R. Agassiz ed. 1913 , pp. 281–2
Summary:

Is mapping coral distribution on the Tortugas reef. His observations on the Florida peninsula suggest that it was built up from the debris of animal remains and was not elevated.

Contributor:
Darwin Correspondence Project