From:
Charles Robert Darwin
To:
Francis Darwin
Date:
5 [June 1878]
Source of text:
DAR 211: 22
Summary:
Sends letter and seeds from [F. J. Cohn].
Is working too hard.
Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Francis Darwin
Date:
18 June [1878]
Source of text:
DAR 211: 27
Summary:
Has been observing the movements of leaves and cotyledons; sleep movements are exaggerated circumnutation. Reports some odd observations on movement in Oxalis species.
Contributor:
Darwin Correspondence Project
From:
Francis Darwin
To:
Charles Robert Darwin
Date:
[22 June 1878]
Source of text:
DAR 274.1: 51
Summary:
Describes his talk with Julius von Sachs about canary-grass.
Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Francis Darwin
Date:
[c. 23 June 1878]
Source of text:
DAR 211: 28
Summary:
Can send FD twisted branches of some climbing plants if he wishes.
Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Francis Darwin
Date:
26 June [1878]
Source of text:
DAR 211: 29–30
Summary:
Asks questions related to movement in plants. The cotyledons of Oxalis offer a promising field for study.
Wonders why Julius von Sachs thinks bloom is a protection against insects.
Encloses notes on the cotyledons of Oxalis species.
Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Francis Darwin
Date:
29 [June 1878]
Source of text:
DAR 211: 31
Summary:
Will dispatch the best twisted stems he can find.
Considers the role of the pulvinus in leaf movement.
Contributor:
Darwin Correspondence Project
From:
Francis Darwin
To:
Charles Robert Darwin
Date:
[29 June] 1878
Source of text:
DAR 209.14: 181
Summary:
Sleep of Porlieria hygrometrica seems independent of light.
Will have lots of time for oats. W. F. P. Pfeffer’s point is that there is no growth in sleepers with joints. A. F. Batalin says there is a slight growth.
[Dated Saturday 28th by FD.]
Contributor:
Darwin Correspondence Project
