An exceedingly important contribution to our rather limited fund of accurate information regarding the general health of the country was the publication recently issued by the Metropolitan Life Insurance Company[2] on the mortality statistics of wage earners and their families. This covers a period of six years (1911 to 1916) and represents a study of 635,449 deaths. The cases reported came from every state in the union with the following exceptions: Mississippi, North Dakota, South Dakota, Wyoming, Colorado, Texas, Nevada, Arizona and New Mexico. Canada and many other localities outside of the "Registration Area" of the United States Census Bureau were included. The facts presented in this report are unique in that they render available for the first time a careful and detailed consideration of the diseases which may be looked upon as representative of the industrial population of the country. The various occupations shown in the order of their numerical importance were as follows:—Laborers, teamsters, drivers and chauffeurs, machinists, textile mill operatives, clerks, office assistants, etc. It covers a study of ten million policy holders and nearly fifty-four million years of life in the aggregate. The age groups studied range from one year to seventy-five in ratios not very different from those exhibited in the general population. The death rate for all persons exposed was 11.81 per 1,000 as compared with a rate of over thirteen per 1,000 (white) of the general population of the registration area during the same period of time. The death rate per 100,000 from 1911 to 1916 of some of the more important general diseases was as follows: Typhoid fever 16.8 Diphtheria and croup 24.3 Scarlet fever 8.6 Acute articular rheumatism 6.3 Diabetes 14.4 Cancer and other malignant tumors 70.0 Bronchopneumonia 30.2 Diarrhea and enteritis (over two years old) 13.9 Cirrhosis of the liver 15.0 Puerperal septicemia 8.1 Accidents of all forms 75.1 Ill-defined diseases 10.1 Measles 8.9 Influenza 15.0 Tuberculosis (all forms) 205.1 Tuberculosis (pulmonary) 173.9 Alcoholism 4.7 Diseases of the arteries, including atheroma, aneurysm, etc. 17.0 Pneumonia (lobar and undefined) 77.5 Intestinal obstruction 5.9 Bright's disease 96.8 Suicide 12.2 Homicide 7.0