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.

CD will attend to ELK’s suggestions, but there is plenty of time, because Dallas translates slowly and Murray will not publish the book before November.

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.

Asks for directions on how to behave at ceremony conferring the Baly Medal.

Discusses Fritz Müller’s paper on the mutual protection of certain mimics ["Ituna and Thyridita", Trans. R. Entomol. Soc. Lond. (1879): xx–xxviii]. [Thyridia!?]

Thanks for plants

and case of sleeping Crotalaria.

"Bloom" for the present has "gone to the dogs".

Shares RM’s misgivings about Fritz Müller’s mutually protecting mimics. Would expect bird’s response to distasteful caterpillars to be instinctive. Believes J. J. Weir or Thomas Belt may have investigated the point.

Thanks for a copy of Theorie der Gärung.

Thinks there is no particular interest in the abnormality in question.

Also CD has looked at several flowers and believes WDC may be mistaken in believing there is a rudimentary anther cell.

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.

Sends results of his researches on the Darwin family at the Record Office.

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.

Comments in jocular vein on GHD’s "Darwin discoveries" about their ancestors.

Emma says CD needs a change and rest.

Thanks her for loan of her house [Abinger Hammer].

Discusses results of geotropism experiment. Has started some heliotropic caustic experiments on mustard roots. Has trouble making marks.

Has tried in vain to find out about the influence of Erasmus Darwin on the administration of stimulants in fever.

Believes that the response of root tips to being "blinded" with foil is much more interesting than response to cauterisation.

Sir Robert Christison says Dr Darwin not the first to recommend alcohol for fever.

Wishes to call on THF to discuss the situation with regard to Horace Darwin [who wishes to marry THF’s daughter, Emma Cecilia (Ida)].