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To Francis Darwin   [1878?]

Summary

Forwards an unspecified work for FD to read.

Author:  Charles Robert Darwin
Addressee:  Francis Darwin
Date:  [1878?]
Classmark:  DAR 211: 21
Letter no:  DCP-LETT-11302

To Francis Darwin   5 [June 1878]

Summary

Sends letter and seeds from [F. J. Cohn].

Is working too hard.

Author:  Charles Robert Darwin
Addressee:  Francis Darwin
Date:  5 [June 1878]
Classmark:  DAR 211: 22
Letter no:  DCP-LETT-11303

To Francis Darwin   [11 May 1878]

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.]

Author:  Charles Robert Darwin
Addressee:  Francis Darwin
Date:  [11 May 1878]
Classmark:  DAR 211: 23
Letter no:  DCP-LETT-11504

To Francis Darwin   15 [July 1878]

Summary

A report has arrived for FD which CD will forward.

Author:  Charles Robert Darwin
Addressee:  Francis Darwin
Date:  15 [July 1878]
Classmark:  DAR 211: 24
Letter no:  DCP-LETT-11511

To Francis Darwin   [13–26 May 1878]

Summary

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

Author:  Charles Robert Darwin
Addressee:  Francis Darwin
Date:  [13–26 May 1878]
Classmark:  DAR 211: 26
Letter no:  DCP-LETT-11538

To Francis Darwin   18 June [1878]

Summary

Has been observing the movements of leaves and cotyledons; sleep movements are exaggerated circumnutation. Reports some odd observations on movement in Oxalis species.

Author:  Charles Robert Darwin
Addressee:  Francis Darwin
Date:  18 June [1878]
Classmark:  DAR 211: 27
Letter no:  DCP-LETT-11559

To Francis Darwin   [c. 23 June 1878]

Summary

Can send FD twisted branches of some climbing plants if he wishes.

Author:  Charles Robert Darwin
Addressee:  Francis Darwin
Date:  [c. 23 June 1878]
Classmark:  DAR 211: 28
Letter no:  DCP-LETT-11564

To Francis Darwin   26 June [1878]

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.

Author:  Charles Robert Darwin
Addressee:  Francis Darwin
Date:  26 June [1878]
Classmark:  DAR 211: 29–30
Letter no:  DCP-LETT-11570

To Francis Darwin   29 [June 1878]

Summary

Will dispatch the best twisted stems he can find.

Considers the role of the pulvinus in leaf movement.

Author:  Charles Robert Darwin
Addressee:  Francis Darwin
Date:  29 [June 1878]
Classmark:  DAR 211: 31
Letter no:  DCP-LETT-11577

To Francis Darwin   [before 17 July 1878]

Summary

Thanks for list of sleepers.

Thinks it would be a good idea to give writing machine to Carl Semper.

Author:  Charles Robert Darwin
Addressee:  Francis Darwin
Date:  [July 1878]
Classmark:  DAR 211: 36
Letter no:  DCP-LETT-11579

To Francis Darwin   2 July [1878]

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.

Author:  Charles Robert Darwin
Addressee:  Francis Darwin
Date:  2 July [1878]
Classmark:  DAR 211: 32
Letter no:  DCP-LETT-11586

To Francis Darwin   6 [July 1878]

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.

Author:  Charles Robert Darwin
Addressee:  Francis Darwin
Date:  6 [July 1878]
Classmark:  DAR 211: 33
Letter no:  DCP-LETT-11593

To Francis Darwin   7 [July 1878]

Summary

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

Thalia flowers have interesting mechanism to ensure cross-fertilisation.

Author:  Charles Robert Darwin
Addressee:  Francis Darwin
Date:  7 [July 1878]
Classmark:  DAR 211: 34
Letter no:  DCP-LETT-11595

To Francis Darwin   14 July [1878]

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.

Author:  Charles Robert Darwin
Addressee:  Francis Darwin
Date:  14 July [1878]
Classmark:  DAR 211: 35, 36, 39
Letter no:  DCP-LETT-11608

To Francis Darwin   17 July [1878]

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.

Author:  Charles Robert Darwin
Addressee:  Francis Darwin
Date:  17 July [1878]
Classmark:  DAR 211: 37
Letter no:  DCP-LETT-11615

To Francis Darwin   20 [July 1878]

Summary

Has offered Carl Semper the writing machine.

Speculates on the mechanism of movement in plants and their reception of and response to stimuli.

Author:  Charles Robert Darwin
Addressee:  Francis Darwin
Date:  20 [July 1878]
Classmark:  DAR 211: 38
Letter no:  DCP-LETT-11620

To Francis Darwin   [20? July 1878]

Summary

Horace Darwin suggests FD water the Porlieria copiously to see whether it will keep awake all day.

[Possibly P.S. to 11620.]

Author:  Charles Robert Darwin
Addressee:  Francis Darwin
Date:  [20? July 1878]
Classmark:  DAR 211: 39
Letter no:  DCP-LETT-11621

To Francis Darwin   25 July [1878]

Summary

Is forwarding the writing machine to Carl Semper.

Is glad FD has taken up his old friends, the twiners.

Hopes to get heliotropic aerial roots from J. D. Hooker. Asks FD to find out whether any moulds or roots are apheliotropic. Is puzzled by heliotropism in subterranean roots.

Author:  Charles Robert Darwin
Addressee:  Francis Darwin
Date:  25 July [1878]
Classmark:  DAR 211: 40
Letter no:  DCP-LETT-11631

To Francis Darwin   30 July [1878]

Summary

Comments on function of bloom.

Describes the effect of water shortage on sleep movements in Porlieria.

Author:  Charles Robert Darwin
Addressee:  Francis Darwin
Date:  30 July [1878]
Classmark:  DAR 211: 41
Letter no:  DCP-LETT-11635

To Francis Darwin   3 August [1878]

Summary

Is pleased FD’s climbing work goes well.

Thanks him for information on heliotropism.

Discusses sleep movements

and his observations on the sensitivity of radicle tips.

Author:  Charles Robert Darwin
Addressee:  Francis Darwin
Date:  3 Aug [1878]
Classmark:  DAR 211: 42
Letter no:  DCP-LETT-11639
Document type
Author
Darwin, C. R.disabled_by_default
Addressee
Correspondent
Date
1878disabled_by_default
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