Infant Mortality. Death rate by races, registration area, city and county. Death rates, 1725 Â 1860. Mortality of freedmen 1865-1872. Tendency of death rates. Causes of deaths. Conclusions. Deaths by diseases Consumption. Pneumonia. Heart disease and dropsy. Diarrheal diseases. Diseases of nervous system. Suicide. Alcoholism. Age and death. Infant Mortality. Improvements in infant mor tality. Changes in rates by age periods. 81 Effect of environment. Normal death rates.