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DCP-LETT-11881

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

DCP-LETT-11900

From:
Hugo de Vries
To:
Charles Robert Darwin
Date:
24 Feb 1879
Source of text:
DAR 209.3: 336
Summary:

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.

Contributor:
Darwin Correspondence Project
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