From Francis Darwin [after 16 June 1879]
Summary
Reports on roots and climbing plants experiments he is performing in Sachs’ laboratory. Orchids with air roots have come. Goebel says proshelic better than helic.
| Author: | Francis Darwin |
| Addressee: | Charles Robert Darwin |
| Date: | [after 16 June 1879] |
| Classmark: | DAR 274.1: 53 |
| Letter no: | DCP-LETT-12111F |
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 |
From Francis Darwin [before 26 June 1879]
Summary
Discusses results of geotropism experiment. Has started some heliotropic caustic experiments on mustard roots. Has trouble making marks.
| Author: | Francis Darwin |
| Addressee: | Charles Robert Darwin |
| Date: | [before 26 June 1879] |
| Classmark: | DAR 274.1: 55 |
| Letter no: | DCP-LETT-12126F |
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 |
From Francis Darwin [22 June 1878]
Summary
Describes his talk with Julius von Sachs about canary-grass.
| Author: | Francis Darwin |
| Addressee: | Charles Robert Darwin |
| Date: | [22 June 1878] |
| Classmark: | DAR 274.1: 51 |
| Letter no: | DCP-LETT-12131F |
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 |
From Francis Darwin 4 July 1879
Summary
Heliotropism nomenclature. Apheliotropic mustard roots grow more quickly in dark. Measures growth with microscope as S. H. Vines did in mould. Studying air roots.
FD’s and Stahl’s negative opinion of Sachs.
| Author: | Francis Darwin |
| Addressee: | Charles Robert Darwin |
| Date: | 4 July 1879 |
| Classmark: | DAR 209.3: 334 |
| Letter no: | DCP-LETT-12134 |
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 |
From Francis Darwin 9 July 1879
Summary
Pressure paralyses the streaming of protoplasm in the hairs of Tradescantia.
| Author: | Francis Darwin |
| Addressee: | Charles Robert Darwin |
| Date: | 9 July 1879 |
| Classmark: | DAR 162: 61 |
| Letter no: | DCP-LETT-12142 |
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 |
From Francis Darwin [before 31 July 1879]
Summary
Discusses Müller-Thurgau’s work on heliotropism. Will start on Thursday for Heidelberg and Strassburg.
| Author: | Francis Darwin |
| Addressee: | Charles Robert Darwin |
| Date: | [before 31 July 1879] |
| Classmark: | DAR 274.1: 56 |
| Letter no: | DCP-LETT-12177F |
To Francis Darwin [2 August 1879]
Summary
Tells arrangements for their journey to Coniston.
| Author: | Charles Robert Darwin |
| Addressee: | Francis Darwin |
| Date: | [2 Aug 1879] |
| Classmark: | DAR 211: 63 |
| Letter no: | DCP-LETT-12179 |
From Francis Darwin [6 July 1879]
Summary
Describes bean experiments. Will tell Emma Darwin to tell Elizabeth Darwin that he has written to the Riffel.
| Author: | Francis Darwin |
| Addressee: | Charles Robert Darwin |
| Date: | [6 July 1879] |
| Classmark: | DAR 274.1: 61 |
| Letter no: | DCP-LETT-12296F |
From Francis Darwin [before 15 December 1880]
Summary
Will stay until London until after the Linnean Society meeting unless CD wants anything. Asks to send abstracts of papers. Has made short abstracts of papers for Nature.
| Author: | Francis Darwin |
| Addressee: | Charles Robert Darwin |
| Date: | [before 15 Dec 1880] |
| Classmark: | DAR 274.1: 62 |
| Letter no: | DCP-LETT-12379F |
From Francis Darwin [25–7 May 1880]
Summary
Hopes CD got telegram about Convolvulus. Is measuring plants every four hours. Will go to Brittany by boat from Southampton on Monday night.
| Author: | Francis Darwin |
| Addressee: | Charles Robert Darwin |
| Date: | [25–7 May 1880] |
| Classmark: | DAR 274.1: 65 |
| Letter no: | DCP-LETT-12616F |
To Francis Darwin [before 1 August 1880]
Summary
Are there old furrowed fields on hillsides in N. Wales, if so can FD look for earthworm activity?
| Author: | Charles Robert Darwin |
| Addressee: | Francis Darwin |
| Date: | [before 1 Aug 1880] |
| Classmark: | DAR 211: 64 |
| Letter no: | DCP-LETT-12645 |
| letter | (239) |
| Darwin, C. R. | (141) |
| Darwin, Francis | (102) |
| Darwin, Amy | (1) |
| Darwin, Elizabeth | (1) |
| Darwin, G. H. | (1) |
| Darwin, Francis | (137) |
| Darwin, C. R. | (98) |
| Darwin, Elizabeth | (7) |
| Darwin, G. H. | (7) |
| Darwin, H. E. | (7) |
| Darwin, C. R. | (239) |
| Darwin, Francis | |
| Darwin, Elizabeth | (8) |
| Darwin, G. H. | (8) |
| Darwin, H. E. | (8) |
| Darwin, Horace | (8) |
| Darwin, Leonard | (8) |
| Darwin, W. E. | (8) |
| Litchfield, H. E. | (8) |
| Darwin, Sara | (2) |
| Romanes, G. J. | (2) |
| Sedgwick, Sara | (2) |
| Thiselton-Dyer, W. T. | (2) |
| Darwin, Amy | (1) |
| Ruck, Amy | (1) |
