The author of this book on the use of roentgen rays in the diagnosis of disease of the thorax presents his material in four parts. Part I, entitled "General Considerations," deals with the principles underlying the various technics used in roentgenologic examination of the lungs and with the anatomy of the thorax from the roentgenologic standpoint. An excellent discussion of the value and method of performing the roentgenoscopic examination is included.
The subject of Part II is "General Roentgen Pathology." This excellent section deals with such topics as congestion, atelectasis, emphysema, infiltration, consolidation, and cavitation in much the same manner as a teacher of pathology who expounds such basic general subjects as inflammation, degenerative changes, and formation of tumors.
Part III, "Regional Roentgen Pathology," deals with the roentgenologic manifestations of specific diseases. In this section, for example, are discussions of pneumonia, tuberculosis, sarcoidosis, and pulmonary neoplasm. Disease processes involving the