Search: Vries, Hugo de in author 
Darwin, C. R. in correspondent 
1870-1879 in date 
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Showing 17 of 7 items

From:
Hugo de Vries
To:
Charles Robert Darwin
Date:
7 Nov 1875
Source of text:
DAR 180: 19
Summary:

Thanks for 2d edition of Climbing plants and for CD’s recognition of HdeV’s two essays on the subject [Climbing plants, pp. v–vi, 9 n., 22, 160]. Cause of spiral growth of tendrils.

Contributor:
Darwin Correspondence Project
From:
Hugo de Vries
To:
Charles Robert Darwin
Date:
17 Nov 1875
Source of text:
DAR 180: 20
Summary:

Hopes to continue study of climbing plants next summer and to observe facts mentioned in CD’s letter.

Contributor:
Darwin Correspondence Project
From:
Hugo de Vries
To:
Charles Robert Darwin
Date:
17 Aug 1878
Source of text:
DAR 180: 21
Summary:

Contraction of plant roots.

Contributor:
Darwin Correspondence Project
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
From:
Hugo de Vries
To:
Charles Robert Darwin
Date:
7 Aug 1879
Source of text:
DAR 180: 22
Summary:

Experiments to determine mechanism of tendril curvature; importance of variations in cell turgidity. Contraction in roots caused by increased turgor.

Contributor:
Darwin Correspondence Project
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
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