CD responds [to 9667] with description of his own effort to study Aldrovanda and his observations on the structure of Dionaea.

His admiration for FJC’s earlier studies of the Venus’s fly-trap.

He urges FJC to proceed promptly with publication of his memoir on Aldrovanda [Beiträge zur Biologie der Pflanzen 1, Heft 3 (1875): 71–92].

Asks whether he might copy two of FJC’s drawings of Aldrovanda. He would like to have a proof of the plate for two woodcuts to be used in his forthcoming book [Insectivorous plants].

CD’s publisher is sending FJC an early copy of Insectivorous plants, in which he hopes that FJC’s admirable papers are acknowledged with the respect that they deserve.

Responds to FJC’s criticism regarding "aggregation" as it occurs in protoplasm [see 10131].

Further discussion of the process of aggregation in response to [10137].

Thanks FJC for paper by Alexander Fraustadt ["Vegetative Organe von Dionaea", Ell. Beitr. Biol. Pfl. 2 (1877): 27–64].

Mentions paper by A. W. Bennett ["Glands of carnivorous plants", Mon. Microsc. J. 15 (1876): 1–5].

Invites him to visit Down.

Comments on paper by Francis Darwin ["Glandular hairs of the common teasel", Q. J. Microsc. Sci. 17 (1877): 169–74, 245–72].

Asks permission to publish comments by FJC regarding paper by Francis Darwin [see 11073].

Comments on discovery of micro-organisms in disease.

Describes experiments carried out by Francis Darwin on filaments of Dipsacus.

Comments on achenia of Pumilio argyrolepis.

Thanks FJC for presentation copy [of Die Pflanze (1882)].