Louis Agassiz’s ill health means AG will not get an answer to CD’s query from him. Suggests CD ask Agassiz’s son, Alexander.

Has no details about the origin of the cat-like behaviour of his dog.

Forwards part of a note [by Mrs L. Agassiz] asking AG to tell CD that Agassiz has never been able to secure one of the fishes sitting on eggs.

In P.S., AG adds, "Agassiz evidently regrets having abused you in former times."

The "man-essay" [Descent] is "very interesting but very difficult".

Cat-like behaviour in dogs.

Thanks for information from Louis Agassiz;

wishes he could feel he deserves what Alexander Agassiz says of him.

Statement of sales of U. S. edition of Origin.

Reports case of apparent incipient dimorphism. Observations on variations in flower structure, especially style length, within species of Polemoniaceae.

Believes AG’s cases of incipient dimorphism are due to mere variability. Has found examples in Nolana and Amsinckia; believes such variation is the basis for the development of dimorphism. Was unaware of variations in Phlox.

Sensitivity of Drosera and Dionaea.