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].