Describes his experiments investigating the geotropic responses of radicles.
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The Charles Darwin Collection
The Darwin Correspondence Project is publishing letters written by and to the naturalist Charles Darwin (1809–1882). Complete transcripts of letters are being made available through the Project’s website (www.darwinproject.ac.uk) after publication in the ongoing print edition of The Correspondence of Charles Darwin (Cambridge University Press 1985–). Metadata and summaries of all known letters (c. 15,000) appear in Ɛpsilon, and the full texts of available letters can also be searched, with links to the full texts.
Describes his experiments investigating the geotropic responses of radicles.
Does not feel he knows enough of FBW to offer his opinion as a testimonial.
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.
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.
Comments in jocular vein on GHD’s "Darwin discoveries" about their ancestors.
Emma says CD needs a change and rest.
Movement of radicles.
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.
Believes that the response of root tips to being "blinded" with foil is much more interesting than response to cauterisation.
Wishes to call on THF to discuss the situation with regard to Horace Darwin [who wishes to marry THF’s daughter, Emma Cecilia (Ida)].
Sir Robert Christison says Dr Darwin not the first to recommend alcohol for fever.
Thanks JP for his kindness, but unfortunately the [unspecified] case is of no use to him.
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.
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.
Stresses importance of ensuring that cauterisation of radicles does not, through injury, prevent movement. Plans an experiment to test for "apheliotropism" in certain radicles.
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.
Francis wants a copy of a book on "Shakespeare’s merry tales" to present to a friend in Würzburg.
Inquires concerning a possibility of searching old deeds about the Darwin family history.
CD has corrected the first proofs [of Erasmus Darwin] and so returns RD’s books. CD is disappointed with his work and fears RD will be also.
CD thinks nothing had better be done about the deeds at present.
Henrietta thinks Erasmus Darwin almost too dull to publish.
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.