Thanks CD for a copy of Insectivorous plants.
Describes experiment on Drosera carried out with his pupils.
Describes reception of the book at the University of Zurich.
Comments on Nägeli’s concept of a "morphological species".
Expresses belief in importance of natural selection.
Mentions his forthcoming publication ["Ulothrix zonata", Jahrb. f. wiss. Bot. 10 (1876): 417–550].