Dividing the material into the major chapters on pathology, diagnosis, prognosis, management, epidemiology and prevention, the authors have done a perfect job in simplification of the subject and in its presentation. The chapters are splendidly illuminated with charts, microscopic and macroscopic illustrations, diagrams, tables, reproductions of x-ray plates, everything, in short, that is necessary for thorough visualization of the subject. Many references are made to the American medical literature and, thanks to the influence of the International Union Against Tuberculosis, the nomenclature is ours. It is regrettable that the influence of the union and of scientific internationalization in general is hindered by disturbed world conditions, by wars and rumors of war, which canceled the meeting at Lisbon two years ago and the meeting in Berlin this year. Each chapter in the book is excellently supplemented by subject summary, by references, by additional bibliography and, in the case of the chapter