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Darwin, Francis in addressee 
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From:
Charles Robert Darwin
To:
Francis Darwin
Date:
[1878?]
Source of text:
DAR 211: 21
Summary:

Forwards an unspecified work for FD to read.

Contributor:
Darwin Correspondence Project
From:
Anton Stecker
To:
Francis Darwin
Date:
12 Mar 1878
Source of text:
DAR 177: 250
Summary:

Will publish Origin first

and then Descent.

AS is looking for a job in a zoological museum or accompanying an expedition.

Contributor:
Darwin Correspondence Project
From:
John Innes Rogers
To:
Francis Darwin
Date:
25 Mar 1878
Source of text:
DAR 176: 196
Summary:

Suggests movements of sensitive plants may protect against insects.

Contributor:
Darwin Correspondence Project
From:
John Innes Rogers
To:
Francis Darwin
Date:
29 Mar 1878
Source of text:
DAR 176: 197
Summary:

JIR’s "theory" of sensitive plants published in an anonymous letter he sent to the Field 2½ years ago. Mechanisms for protection against insects in sensitive plants.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Francis Darwin
Date:
[11 May 1878]
Source of text:
DAR 211: 23
Summary:

Julius von Sachs will "swear & curse" when he finds out he has missed sensitiveness of root apex. Has been putting his notes together and the case is conclusive. [Dated "Saturday 10th" by CD.]

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Francis Darwin
Date:
[13–26 May 1878]
Source of text:
DAR 211: 26
Summary:

Has had conflicting information on the movement of radicles; wants FD to experiment with them.

Contributor:
Darwin Correspondence Project
Text Online
From:
Martindale, William
To:
Darwin, Francis
Date:
24 May 1878
Source of text:
DAR 171: 57
Summary:

No summary available.

Contributor:
Darwin Family Letters
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:
John Innes Rogers
To:
Francis Darwin
Date:
6 June 1878
Source of text:
DAR 176: 198
Summary:

Suggests sensitive plants that close at night would be protected from nocturnal-feeding snails. JIR’s brother in India says snails occur there in abundance.

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:
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:
Charles Robert Darwin
To:
Francis Darwin
Date:
2 July [1878]
Source of text:
DAR 211: 32
Summary:

Suggests FD call on Carl Semper.

Inquires about Porlieria: Do the leaves shut to check evaporation? Does it appear silver under water?

Explains how he thinks the pulvinus acts; wishes FD would investigate the point.

Contributor:
Darwin Correspondence Project
From:
John Innes Rogers
To:
Francis Darwin
Date:
2 July 1878
Source of text:
DAR 176: 199
Summary:

JIR’s brother writes from India in support of the protective function of plant sensitivity.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Francis Darwin
Date:
6 [July 1878]
Source of text:
DAR 211: 33
Summary:

Has a magnificent bush of Porlieria. There is no vestige of bloom; CD will test for sleep movements. Reports successful experiments on temperature-induced sensitivity of radicles.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Francis Darwin
Date:
7 [July 1878]
Source of text:
DAR 211: 34
Summary:

Describes sleep movements in Porlieria and his experiments on movements of radicles.

Thalia flowers have interesting mechanism to ensure cross-fertilisation.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Francis Darwin
Date:
14 July [1878]
Source of text:
DAR 211: 35, 36, 39
Summary:

Asks for list of families of sleeping plants. Believes sleep is merely modified circumnutation at a particular time of day.

Porlieria has had no water for some time but shows no sign of flagging.

Describes the response of Thalia flowers to touch.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Francis Darwin
Date:
15 [July 1878]
Source of text:
DAR 211: 24
Summary:

A report has arrived for FD which CD will forward.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Francis Darwin
Date:
17 July [1878]
Source of text:
DAR 211: 37
Summary:

Discusses sleep movements of Porlieria.

Has read an abstract of Julius Wiesner on heliotropism and geotropism ["Die heliotropischen Erscheinungen im Pflanzenreiche", Anz. Kais. Akad. Wiss. Wien 15 (1878): 137–40] which seems important but is puzzling.

Gives details of his observations on climbing plants with reference to comments by Julius Sachs.

Contributor:
Darwin Correspondence Project