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DCP-LETT-12213

From:
Hugo de Vries
To:
Charles Robert Darwin
Date:
2 Sept 1879
Source of text:
DAR 180: 23
Summary:

Force of turgor is true cause of movement in plants. HdeV hopes to identify the substance which increases the cell’s water-absorbing power.

Contributor:
Darwin Correspondence Project

DCP-LETT-12219F

From:
Charles Robert Darwin
To:
Hugo de Vries
Date:
6 Sept 1879
Source of text:
Artis Library (De Vries 7)
Summary:

Perhaps movement from side to side in plants is caused by the contraction of one side, rather than the expansion of the other.

Sends seeds of Lychnis Githago: he observed the hypocotyledenous stem, not the root, contracting.

Contributor:
Darwin Correspondence Project

DCP-LETT-12223

From:
Hugo de Vries
To:
Charles Robert Darwin
Date:
10 Sept 1879
Source of text:
DAR 180: 24
Summary:

Movement of tentacles of Drosera.

Contributor:
Darwin Correspondence Project
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