This book of Readings in Psychology, collected by the talented Professor of Psychology of the University of Kansas, presents most of the good points that one might expect to find in such a book, and probably, too, most of the bad ones. It is a collection of some twenty-eight separate essays by different writers on various subjects, grouped under seven heads. Such collections are of doubtful value because probably no two persons would ever make anything like the same assortment. To the reviewer there are three or four papers that seem to him most interesting: The first by Professor Wheeler, on the application of eight organismic laws, is an interesting effort to set down some general laws of action of organisms as a whole; Coghill gives a statement of his work on the early development of behavior in “Amblystoma,” which is of fundamental biological significance, as is also Professor Child's essay in which he undertakes the correlation of his well known concept of gradients