To Francis Darwin 3 June [1879]
Summary
Asks whether canary grass and oats have chlorophyll in their cotyledons.
Has been working hard at circumnutation of leaves to see whether sleep movements are exaggerated circumnutation.
Author: | Charles Robert Darwin |
Addressee: | Francis Darwin |
Date: | 3 June [1879] |
Classmark: | DAR 211: 25 |
Letter no: | DCP-LETT-11541 |
To Francis Darwin [4 February – 8 March 1879]
Summary
Requests some seeds.
Believes the leaves of Phyllanthus sleep like those of Cassia.
Author: | Charles Robert Darwin |
Addressee: | Francis Darwin |
Date: | [4 Feb – 8 Mar 1879] |
Classmark: | DAR 211: 49 |
Letter no: | DCP-LETT-11815 |
To Francis Darwin? [1879–80?]
Summary
Discusses A. B. Frank’s views [Beiträge zur Pflanzenphysiologie (1868)] on how plants position themselves; differences and similarities compared with their own conclusions.
Author: | Charles Robert Darwin |
Addressee: | Francis Darwin |
Date: | [1879–80?] |
Classmark: | DAR LIB 2003/2004 (in box with A. B. Frank, Beiträge zur Pflanzenphysiologie, 1868, and Die natürliche wagerechte Richtung von Pflanzentheilen, 1870) |
Letter no: | DCP-LETT-11816 |
To Francis Darwin [before 25 February 1879]
Summary
CD cannot find his pincers and other tools for microscopical dissection. Does FD know where he should look?
Hopes FD will feel better after "so complete a change" [trip to North Africa].
Sends his love to George.
Bernard gets more charming every day.
CD has been put on a committee for a memorial fund for W. K. Clifford.
Author: | Charles Robert Darwin |
Addressee: | Francis Darwin |
Date: | [before 25 Feb 1879] |
Classmark: | DAR 271.4: 12 |
Letter no: | DCP-LETT-11883A |
To Francis Darwin 21 February [1879]
Summary
Is increasing FD’s allowance.
Has begun his chapter on sleep of plants [for Movement in plants].
Author: | Charles Robert Darwin |
Addressee: | Francis Darwin |
Date: | 21 Feb [1879] |
Classmark: | DAR 211: 50 |
Letter no: | DCP-LETT-11899 |
To Francis Darwin [before 29 May 1879]
Summary
Try to find and read [a German] account of the fir-trees affected by some fungus which produces upright shoots. CD wants to know whether the case is same as what he has observed in the silver fir. Includes diagram.
Author: | Charles Robert Darwin |
Addressee: | Francis Darwin |
Date: | [before 29 May 1879] |
Classmark: | DAR 271.4: 13 |
Letter no: | DCP-LETT-12074B |
To Francis Darwin [2 June 1879 or earlier]
Summary
Wants FD to find out what sort of man Ernst Krause is.
Author: | Charles Robert Darwin |
Addressee: | Francis Darwin |
Date: | [2 June 1879 or earlier] |
Classmark: | DAR 211: 51 |
Letter no: | DCP-LETT-12076 |
To Francis Darwin 2 June [1879]
Summary
Thanks for FD’s letter describing microscopic work under experienced supervision.
Is glad to hear of C. E. Stahl’s objection to treating plants as mere machines.
Pleased that J. von Sachs has yielded on growth.
Perhaps Stahl will recognise whether the case of the silver fir is the same as that referred to in the German account [see 12074b].
CD has finished the first draft of his essay on Erasmus Darwin’s life and is "heartily sick of the job".
Author: | Charles Robert Darwin |
Addressee: | Francis Darwin |
Date: | 2 June [1879] |
Classmark: | DAR 271.4: 15 |
Letter no: | DCP-LETT-12078A |
To Francis Darwin [before 5 June 1879]
Summary
Believes that he will prove that the tip of radicle is the brain as far as geotropism is concerned.
Author: | Charles Robert Darwin |
Addressee: | Francis Darwin |
Date: | [before 5 June 1879] |
Classmark: | DAR 211: 53 |
Letter no: | DCP-LETT-12084 |
To Francis Darwin 6 and 7 June [1879]
Summary
Describes his experiments investigating the geotropic responses of radicles.
Author: | Charles Robert Darwin |
Addressee: | Francis Darwin |
Date: | 6 and 7 June 1879 |
Classmark: | DAR 211: 54 |
Letter no: | DCP-LETT-12091 |
To Francis Darwin 16 June [1879]
Summary
Has given his reasons for believing that twisting of stem is related to circumnutation in Climbing plants.
Tells results of experiments on movement of cotyledons and radicles.
Is getting aerial heliotropic roots from Kew.
Author: | Charles Robert Darwin |
Addressee: | Francis Darwin |
Date: | 16 June [1879] |
Classmark: | DAR 211: 55 |
Letter no: | DCP-LETT-12111 |
To Francis Darwin 24 June [1879]
Summary
Movement in plants: Philodendron and Dendrobium.
Will go to London on Thursday to receive Baly Medal. Laura Forster has offered them her house in London.
Author: | Charles Robert Darwin |
Addressee: | Francis Darwin |
Date: | 24 June [1879] |
Classmark: | DAR 271.4: 14 |
Letter no: | DCP-LETT-12117A |
To Francis Darwin [after 24 June 1879]
Summary
Movement of radicles.
Author: | Charles Robert Darwin |
Addressee: | Francis Darwin |
Date: | [after 24 June 1879] |
Classmark: | DAR 211: 57 |
Letter no: | DCP-LETT-12121 |
To Francis Darwin 25 June [1879]
Summary
Suggests experiments to test the response of radicles to light. Considers an alternative term for heliotropism.
Will be curious to have FD’s spiral theory about circumnutation explained to him.
Author: | Charles Robert Darwin |
Addressee: | Francis Darwin |
Date: | 25 June [1879] |
Classmark: | DAR 211: 56 |
Letter no: | DCP-LETT-12122 |
To Francis Darwin [26 June 1879]
Summary
Believes that the response of root tips to being "blinded" with foil is much more interesting than response to cauterisation.
Author: | Charles Robert Darwin |
Addressee: | Francis Darwin |
Date: | [26 June 1879] |
Classmark: | DAR 211: 58 |
Letter no: | DCP-LETT-12124 |
To Francis Darwin 28 June [1879]
Summary
Discusses the movements of radicles. His observations show that sensitivity to touch resides in the root tip and he believes that sensitivity to gravity governing geotropic responses is also in the root tip. Would much like to convert Julius von Sachs to his ideas on radicle movement.
Author: | Charles Robert Darwin |
Addressee: | Francis Darwin |
Date: | 28 June [1879] |
Classmark: | DAR 211: 59 |
Letter no: | DCP-LETT-12128 |
To Francis Darwin 2 July [1879]
Summary
FD’s experiment shows that caustic does not interfere with the bending of radicles. Believes that the apex is a kind of brain for certain movements, being specialised to receive certain irritations.
Author: | Charles Robert Darwin |
Addressee: | Francis Darwin |
Date: | 2 July [1879] |
Classmark: | DAR 211: 61 |
Letter no: | DCP-LETT-12132 |
To Francis Darwin 2 July [1879]
Summary
Stresses importance of ensuring that cauterisation of radicles does not, through injury, prevent movement. Plans an experiment to test for "apheliotropism" in certain radicles.
Author: | Charles Robert Darwin |
Addressee: | Francis Darwin |
Date: | 2 July [1879] |
Classmark: | DAR 211: 60 |
Letter no: | DCP-LETT-12133 |
To Francis Darwin 4 July [1879]
Summary
CD gives suggestions concerning FD’s experiments on the radicles of roots. Asks him to find out whether J. von Sachs tried beans. Should also try other gramineous plants.
Bernard looking forward to his father’s return.
Author: | Charles Robert Darwin |
Addressee: | Francis Darwin |
Date: | 4 July [1879] |
Classmark: | DAR 271.4: 16 |
Letter no: | DCP-LETT-12134A |
To Francis Darwin 12 July [1879]
Summary
Notes observations on sensitivity and movement of radicles.
Has finished chapter [of Movement in plants] on sleeping plants and is now looking over heliotropism notes.
Is perplexed by Erasmus Darwin; Erasmus [A. Darwin] likes it, but Henrietta thinks it much too long.
Author: | Charles Robert Darwin |
Addressee: | Francis Darwin |
Date: | 12 July [1879] |
Classmark: | DAR 211: 62 |
Letter no: | DCP-LETT-12152 |
letter | (22) |
Darwin, C. R. | (22) |
Darwin, Francis | |
Darwin, Elizabeth | (1) |
Darwin, G. H. | (1) |
Darwin, H. E. | (1) |
Darwin, Horace | (1) |
Darwin, Leonard | (1) |
Darwin, W. E. | (1) |
Litchfield, H. E. | (1) |
Darwin, C. R. | |
Darwin, Francis | (22) |
Darwin, Elizabeth | (1) |
Darwin, G. H. | (1) |
Darwin, H. E. | (1) |
Darwin, Horace | (1) |
Darwin, Leonard | (1) |
Darwin, W. E. | (1) |
Litchfield, H. E. | (1) |