Different Forms of Tuberculosis. The terrible disease tuberculosis is the most serious and deadly enemy which the human body has to face. It kills every year, in the United States, over a hundred and fifty thousand men, women, and children--_more lives than were lost in battle in the four years of our Civil War_. It is caused by a tiny germ--the _tubercle bacillus_--so called because it forms little mustard-seed-like lumps, or masses, in the lungs, called _tubercles_, or "little tubers." For some reason it attacks most frequently and does its greatest damage in the lungs, where it is called _consumption_; but it may penetrate and attack any tissue or part of the body. Tuberculosis of the glands, or "kernels," of the neck and skin, is called _scrofula_; tuberculosis of the hip is _hip-joint disease_; and tuberculosis of the knee, _white swelling_. "Spinal disease" and "hunch-back" are, nine times out of ten, tuberculosis of the backbone. Tuberculosis of the bowels often causes fatal wasting away, with diarrhea, in babies and young children; and tuberculosis of the brain (called _tubercular meningitis_) causes fatal convulsions in infancy. [Illustration: CONSUMPTION IN CHICAGO Four hundred and seventy-seven cases in one month--February, 1909.] Tuberculosis of the Lungs--How to Keep it from Spreading. Tuberculosis of the lungs is the most dangerous of all forms, both because the lungs appear to have less power of resistance against the tubercle bacillus, and also because from the lung, the bacilli can readily be coughed up and blown into the air again, or spit onto the floor, to be breathed into the lungs of other people, and thus give them the disease. Two-thirds of all who die of tuberculosis die of the pulmonary, or lung, form of the disease, popularly called consumption. The first thing then to be done to put a stop to this frightful waste of human life every year is to _stop the circulation of the bacillus from one person to another_. This can be done partially and gradually by seeing that every consumptive holds a handkerchief, or cloth, before his mouth whenever he coughs; that he uses a paper napkin, pasteboard box, flask, or other receptacle whenever he spits; and that these things in which the sputum is caught are promptly burned, boiled, or otherwise sterilized by heat. The only sure and certain way, however, of stopping its spread is by placing the consumptive where he is in no danger of infecting any one else. And as it fortunately so happens that such a place--that is to say, a properly regulated sanatorium, or camp--is the place which will give him his best chance of recovery, at least five times as good as if he were left in his own home, this is the plan which is almost certain to be adopted in the future. Its only real drawback is the expense.