To find oneself cited sympathetically along with one's colleagues—notably Roger Masters, Glen Schubert, and Fred Willhoite—in an intellectual history by a Pulitzer Prize-winning historian is pleasant discovery. But it also constitutes something of a conflict of interest in pronouncing a judgment upon the work—it could, after all, turn out to be a disappointing dud. So it is doubly a pleasure, even allowing for an inevitable bias, to report that Carl Degler's In Search of Human Nature is a masterly account of the influence of Darwinism upon American social thought. (I was a bit troubled, though, by one or two omissions; there was no mention, for example, of Ellsworth Huntington among early Darwinis ts.)