This is an encyclopedia on tuberculosis written for lay officials as well as for physicians. The first part is a dictionary of 271 pages, with definitions and descriptions of terms and technics peculiar to surgical, medical and laboratory procedures used in this special field. A large number of proprietary products that have been advocated for the treatment of tuberculosis are listed, with their trade names and formulas. In addition, the dictionary includes the names of a great many persons who have made major as well as minor contributions to the literature on tuberculosis, and a brief, pertinent bibliography is included. Most of the entries, which vary in length from one sentence to several paragraphs, are cross indexed. For example, under "pneumothorax" one is referred to other entries, which include the names of those who are credited with first using the term. An appendix lists various journals and textbooks on tuberculosis.