Natural History of Tuberculosis in the Human Body* *From the School of Public Health and the Department of Internal Medicine, the Medical and Graduate Schools, University of Minnesota.** **Prepared with the aid of the H. Longstreet Taylor Tuberculosis Research Fund, provided by the Minnesota Tuberculosis and Health Association, the J. Arthur Myers Research Fund of the University of Minnesota, a gift by Dr. A. A. Leonidoff and funds honoring Edith Corson Gould, Kaye Swedien, and Marguerite Myers Whaley.