Thanks FD for his three publications.

CD is pleased that FD has discussed Pangenesis, although he does not favour the hypothesis. Will seek English publisher.

Cautions FD about fluid in labellum of Coryanthes.

T. H. Farrer is enthusiastic about FD’s papers.

Believes humming-birds fertilise many American flowers.

Mentions his reply to FD’s criticisms ["Pangenesis: Mr Darwin’s reply to Professor Delpino", Sci. Opin. 2 (1869): 426; Collected papers 2: 158–60].

Suggests that FD study fertilisation of Gramineae.

Thanks FD for seeds of Canna.

Still thinks it would be worth FD’s while looking at the fertilisation of Lotus; does not think Frank Darwin has exaggerated the novelty of the contrivance.

Will send FD’s work [Studi sopra un lignaggio anemofilo delle composte (1871)] to Nature for review.

CD’s health has been poor all summer – he doubts that he will ever "have the strength to publish on Variability under a state of Nature".

Hopes to publish on cross- and self-fertilisation next summer.

Encloses his photo and asks for FD’s.

Asks whether, in Italy, varieties of Lathyrus odoratus, Pisum sativum, and Phaseolus multiflorus must be grown separately to come true.

Discusses role of insects in crossing varieties of Lathyrus odoratus and other species.

Comments on Hermann Müller [Die Befruchtung der Blumen (1873)],

and Anton Kerner ["Die Schutzmittel des Pollens", Ber. Naturwiss. Med. Ver. Innsbruck, 3 (1873): 100–68].

Admires FD’s work on anemophilous plants.

Thanks FD for the volumes of Revista Botanica [1874–5].