This little book is now in its fifth edition since its original publication in 1898. During that period it has been gradually enlarged and become progressively more ambitious, until in the present edition it sets forth to be a practical psychology and psychiatry for use in training schools for attendants and nurses and in medical classes, and as a ready reference for the practitioner. The classification which has been followed is that of the National Committee for Mental Hygiene, but the case material which has been introduced as illustrative is the material of the author presented in his own particular way so that the book presents all of the unique characteristics of individual authorship rather than those of a digest and compilation of existing literature. It is well and interestingly written and cannot fail to serve its purpose well. We predict further new editions and speed it on its way with our best wishes.

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