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