Medical examination of employees is becoming the practice in the industries of our country. This has been found necessary by business men, first, to conserve the health and welfare of the individual, and second, to promote efficiency. Safety first methods and principles are becoming matters of first importance in the life of our country. Shop sanitation and proper working conditions are requisites in a first class business organization. There are 20,000,000 schoolchildren in the United States. These boys and girls spend 11,415 years in the schoolrooms of the land every school day. This means a total every school year of 2,283,000 years. School attendance is compulsory. Any business responsible for the expenditure of this amount of time would find it necessary to apply efficiency tests to be sure that working conditions were satisfactory. Anyone who has visited schoolrooms and is aware of the enormous amount of time required from the
