The first edition of this work was published in 1923. This, the second edition, is considerably enlarged, has much new material distributed throughout, and is illustrated. The reviewer is very glad to see an excellent picture of the late Dr. Fernald, whose name will always be associated with the early efforts at understanding and helping the feebleminded in this country. Particular attention should be called to the additions to the chapter on the Changing Concepts of Heredity, to the sanity of the discussion of the question of Sterilization, and to the new chapters on Defective Delinquents and on the Newer Aspects of Behavior. The very excellent historical matter naturally remains much the same, but with the change in the other portions of the book, specifically those mentioned, Dr. Davies' book still maintains its place as the most important text on the subject of the feebleminded which we have in this country.

White