Readers of the Second Edition of this book will require from the reviewer nothing more than an outline of the chapters which have been added.

In the chapter on Masturbation stress is laid on the harmful effects of the psychic conflicts associated with the habit, and the author states in reply to the well-known quack literature that 'masturbation does not exert a harmful influence on the physical health of normal persons' (p. 154). But it should be controlled, especially in the latent period when it may injure the capacity to sublimate on higher aims (p. 155). The relation to the castration complex is dealt with at some length.

The 'Studies in Paraphrenia' are a valuable addition to the book, though the case histories are regrettably sketchy and unconvincing, from the analytical