local laws against prostitution and liquor-selling were rigidly enforced. The results exceeded all expectations. In a year and a half about 130 red-light districts were closed at the instigation of these officers working in the name of the Law Enforcement Division. Street-walking and the connivance of lodging-house and hotel-keepers, taxicab drivers, and others was kept down. Trained women social workers, experts in the management of reformatories and detention houses, and civilian investigators co-operated with the military authorities in the work. Seven hundred and fifty cities and towns were investigated and a thorough clean-up was made in 453. As a result of this work, _it is estimated that to-day not more than five openly recognized red-light districts remain in the whole United States_. It has repeatedly been asserted that military life is conducive to immorality and that the army reeks with venereal diseases. This charge is effectually disposed of by the statement that of a total of approximately 225,000 cases of venereal disease found to exist in the army, 200,000 were contracted before enlistment. [Illustration: FIELD-HOSPITAL.] [Illustration: AN INFECTIOUS WARD.] [Illustration: CLEAR, FILTERED, DISINFECTED WATER. Complete water-purification plant and laboratory on truck, known as the “steri-lab.”] [Illustration: WATER STATION ON THE WESTERN FRONT. The hose of a “steri-lab” can be seen in the foreground.] The Division of Surgery is subdivided into sections of General Surgery, Orthopedic Surgery, Head Surgery, and Genito-Urinary Surgery. In each of the forty-five army hospitals in the United States a surgical service is maintained, the chief surgeon and his assistants having practically the same freedom of judgment in deciding upon the kind of treatment that is to be pursued that they would exercise in civilian institutions. To some extent, however, the matter of treatment is governed by the rules laid down in the Army Medical Manual and the regulations established by the Surgeon-General’s Office. Thus, each month a duplicate of the record of every operation performed, a list of the patients who have died and the reasons for their deaths, and a list of the supplies used by the surgical service must be sent to Washington. In addition, the hospital must report upon the number of patients received from overseas and the character of their injuries, and the number of cases of peripheral nerve, empyema, fractures, osteomyelitis, etc., which are in the hospital, together with the classification of the stage of the disease, that is, whether it is improving, whether it is stationary, or whether it will require operation. In this way the Division of Surgery is enabled to maintain a supervision over the operation of each hospital without interfering with its actual workings. In other words, the surgical service is permitted to exercise its own judgment untrammelled and without interference, but it