Tuberculous teachers ought to be excluded from schoolrooms not merely because they may spread tuberculosis, but because they cannot do justice to school work without sacrifices that society ought not to accept. A tuberculous teacher ought to be generous enough to permit public hospitals to restore her strength or enterprising enough to join tuberculosis classes. It is selfish to demand independence at the price which is paid by schools that employ tuberculous teachers. [Illustration: FIGHTING BONE TUBERCULOSIS WITH SALT WATER AND SALT AIR] Predisposition to tuberculosis should be understood by every child before he is accepted as an industrial soldier. Many trades now dangerous would be made safe if workers knew the risk they run, and if society forbade such trades needlessly to exhaust their employees. A perfectly sound man is predisposed to tuberculosis if he elects to work in stale, dust-laden air. Ill-ventilated rooms, cramped positions, lack of exercise in the open air, prepare lungs to give a cordial reception to tubercle bacilli. Rooms as well as persons become infected. Fortunately, opportunities to work are so varied in most localities that workers predisposed to tuberculosis may be sure of a livelihood in an occupation suited to their vitality. Destruction of germs in the air, in carpets, on walls, on streets, is quite as important as destruction of germs in lungs. Why should not tenants and workers require health certificates stating that neither house nor working place is infected with tubercle bacilli? Some cities now compel the disinfection of premises occupied by tuberculous persons _after_ their removal. Landlords, employers, tenants, and employees can easily be taught to see the advantage of disinfecting premises occupied by tuberculous cases _before_ detection. [Illustration: FIGHTING FEATHER DUSTERS IS ONE OBJECT OF SEA-AIR HOSPITALS FOR BONE TUBERCULOSIS] Dry cleaning, feather dusters, dust-laden air, will disappear from schoolrooms within twenty-four hours after school-teachers declare that they shall disappear. We have no right to expect street cleaners, tenement and shop janitors, or overworked mothers to be more careful than school-teachers. Last year I said to a janitress, "Don't you realize that you may get consumption if you use that feather duster?" Her reply caused us to realize our carelessness: "I don't want any more than I've got now." Shall we some day have compulsory examination and instruction of all cleaners, starting with school cleaners? [Illustration: FIGHTING TUBERCULOSIS IN OPEN TENTS]