The members of the faculty of Yale, Harvard and Princeton have cooperated to present the story of evolution from the various points of view included in their special subjects. The facts are accurately presented and handsomely illustrated. The authors speak with the facility that comes of frequent presentation. Sections of particular interest to the physician are those on the evolution of the nervous system, of intelligence and of culture, and on the relationships of climate to changes in civilization. As is typical of every publication issued by the Yale University Press, this book is a pleasure to read, to hold and to have.