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 |
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 |
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 |
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 |
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 |
letter | (8) |
Darwin, C. R. | (4) |
Darwin, Francis | (4) |
Darwin, C. R. | (4) |
Darwin, Francis | (4) |