For everyone who works in a mental hospital, psychiatrists, nurses, psychologists, administrators, and auxiliaries, this book contains a wealth of information on the manifold aspects of life in these large communities of whose importance society is only just beginning to become aware. A book like this augurs well for the results of the reforms of psychiatric hospitals so urgently required. Dr. Linn's approach is catholic, and he attempts to deal with all types of treatment and problems arising in psychiatric hospital practice. It is this very comprehensiveness rather than preoccupation with details which makes this book so useful and stimulating.