Tuberculosis mortality has decreased continuously since the beginning of the century; the rate for 1941 was < 1/4 that in 1900. The decrease has been relatively greater for [female][female] than for [male][male] and for whites than for nonwhites. Tuberculosis was 1st in numerical importance as a cause of death at the beginning of the century and 7th in 1940. Nearly 1/2 of all tuberculosis deaths occur at ages 20-44. From early adulthood to age 35, tuberculosis is the leading cause of death; is one of the first 3 causes of death at ages 15-49. For ages 20-34, 1 out of every 6 deaths among whites and 1 out of every 3 deaths among nonwhites is due to tuberculosis. Mortality from tuberculosis was 40% higher among [male][male] than [female][female] and 31/2 times as high among nonwhites as whites. Death rates from tuberculosis (all forms) are higher in the older age groups than in the younger. Among children and young adults, the rates are much higher for [female][female] but in older groups, rates are higher for ''[male][male]. Among whites the rates increase with age, but among nonwhites highest rates occur during most productive periods. In 1900,> 11% of all deaths were due to tuberculosis; in 1940 this was only 4.3. Every age group shared the reduction of the mortality reduction, but not to the same degree. Tuberculosis mortality has fallen at a more accelerated rate than mortality from all causes. Charts and tables accompany this very illuminating report.