From:
Charles Robert Darwin
To:
Hugo de Vries
Date:
13 Feb 1879
Source of text:
Artis Library (De Vries 5)
Summary:
Discusses heliotropism in plant cotyledons. Asks for information.
Contributor:
Darwin Correspondence Project
Showing 1–2 of 2 items
Discusses heliotropism in plant cotyledons. Asks for information.
Did not wish to imply that some leaves are insensitive to light, only that he could not measure their sensitivity. Contraction of roots seems common.