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From:
Darwin, Emma
To:
Darwin, Ida
Date:
[6 September 1881]
Source of text:
DAR 258: 632
Summary:

No summary available.

Contributor:
Darwin Family Letters
From:
Johann Friedrich Theodor (Fritz) Müller
To:
Charles Robert Darwin
Date:
6, 7 and 9 Sept 1881
Source of text:
DAR 171: 287
Summary:

Discusses some of his observations on the sleep movement in plants. Has been studying the leaflets of Crotalaria; has discovered they move to face the setting sun.

Contributor:
Darwin Correspondence Project