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The first volume of a new nine volume treatise, taking the place of the two large volumes of 1923, promises a most interesting presentation of French psychology by forty-four writers, in seven volumes for normal and two volumes for abnormal psychology.
Perrier opens the discussion of the "preliminary concepts" with a new chapter of 50 pages on the structural evolution and phylogeny, and P. Rivet with one on the data of anthropology and ethnology, and Champy contributes one on the problems of growth and the physiology of the ages and sexes. Replacing the more morphologic chapter of Langlois, L. Lapicque now offers the general physiology of the nervous system and the revised and extended discussion of the weight of the brain and intelligence; A. Tournay expands his special physiology of the nervous system, and Henri Wallon deals with the biologic problem of consciousness, with considerable attention to the new data.