This is a full text-book of neurasthenia, where the subject is treated at length from every point of view, aetiology, symptomatology, and treatment. It contains an interesting historical review of the subject, and is indeed mainly a compilation from other writers. The author's attitude is a catholic one on most points. He regards neurasthenia as having a mixed origin, and is willing to concede aetiological significance to almost all factors that have ever been suggested, from pyorrhoea to mental conflict, and therapeutic value to a similarly extensive list of measures, from dieting and administration of inorganic phosphates to psycho-analysis. Following most modern writers he excludes from the conception of neurasthenia, not only psychoneurotic symptoms such as obsessions and phobias, but also the anxiety states, so that his definition of the disease would cover much the same ground as that given by a psycho-analyst.