Thanks for ESM’s address ["What American zoologists have done for evolution", Proc. Am. Assoc. Adv. Sci. 25 (1876)].

J. A. Allen’s work is important as apparently showing change through direct action of [external] conditions.

CD has given up trying to understand E. D. Cope and Alpheus Hyatt on acceleration and retardation.

Lectured on Darwinism in Cincinnati, Minneapolis, Buffalo, and to 3500 people in New York City.

Despite close friendship with Cope and Hyatt and many explanations by the latter, he cannot understand their views.

Thanks CD for appreciation of his papers.