Has heard from Huxley that CD has been ill.
Progress on his book [Generelle Morphologie (1866)] has been slow.
Has been named "ordentlicher Professor". Has 150 listeners in his lectures on CD’s theory.
Thanks CD for copy [of "Climbing plants"].
Sends his book [Beiträge zur Naturgeschichte der Hydromedusen, 1. Heft: Die Familie der Rüsselquallen (Geryonidae) (1865)] and two articles.
Calls attention to a new rhizopod from Nice.