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].