Hist." and in the "Bulletin of the Harvard Museum of Comp.

Zoology.") LETTER 255.

A.HYATT TO CHARLES DARWIN.

Cannstadt bei Stuttgart, December 8th, 1872.
The quickness and earnestness of your reply to my letter gives me the greatest encouragement, and I am much delighted at the unexpected interest which your questions and comments display.

What you say about Prof.Cope's style has been often before said to me, and I have remarked in his writings an unsatisfactory treatment of our common theory.