 The author wishes to acknowledge the valuable comments on this article by David Depew, M.J.S. Hodge, Robert Richards, and Xiaoxing Jin. Additional comments were made by Michael Ruse, Edward Zalta, M. Katherine Tillman, and the anonymous reviewers for the Stanford Encyclopedia of Philosophy. I am particularly indebted to my student, Mr. Xiaoxing Jin, for information contained in his substantial doctoral work and subsequent research on the reception of Darwinism into China. Responsibility for all interpretations is my own.