The author is the well known professor of internal medicine and director of the Second Medical Clinic of the University of Berlin. The volume is a collection and summary of his clinical work and that of a group of co-workers published in various journals, textbooks and proceedings of scientific meetings over a period of more than twenty years. He states that the points of view and conclusions may be regarded as representative of a school of modern German medicine. The first six chapters deal with the gastro-intestinal, pancreatic and biliary systems. These are followed by a chapter each on inflammation and allergy, obesity and malnutrition and hyperthyroidism and the thyrotic constitution. Four chapters are devoted to disturbances and diseases of the vascular system. Chapter 14 contains a discussion of the visceral nervous system, and is followed by a chapter called "Diagnostic Reformation"; the latter will be discussed in more detail