Eight different elements of industrial efficiency are concerned with the individual's health habits,--the industrial worker, his industrial product, his employer, his employer's profit, his trade or profession, its product, his nation, national product. Obviously few men have so little to do that they have time to think out in detail how this act or that indulgence will affect each of these eight factors of industrial efficiency. Once convinced, however, that all of these elements are either helped or injured by the individual's method of living, each one of us has a strong reason for imposing habits of health upon all industries, upon employees and operatives, upon all who are a part of industrial efficiency. When these eight relations are seen, parents and teachers have particularly strong reasons for inculcating habits of health in their children. That industrial inefficiency results from chronic habits of unhealthy living is generally recognized. The alcoholic furnishes the most vivid illustration. The penalties suffered by him and his family are grave enough, but because he has not full possession of his faculties he is unpunctual, wastes material, disobeys instructions, endangers others' lives, decreases the product of his trade and of his employer, lessens the profits of both, depresses wages, increases insurance and business risks. Because no one can foresee when the "drop too much" will be taken, industry finds it important to know that the habit of drinking alcoholics moderately has not been acquired by train dispatcher, engineer, switchman, chauffeur. Because the habit of drinking moderately is apt, among lower incomes, to go hand in hand with other habits injurious to business and fatal to integrity, positions of trust in industry seek men and women who have the habit of declining drink.