Complications.--The most important and by far the most frequent complication of measles is broncho-pneumonia. There may be various conditions affecting the stomach, bowels, throat, ears, bronchi, and the nervous system, which may accompany the disease but are seldom of a serious or important character. Treatment.--Measles runs a certain course and will run that course, no matter what we may or may not do. We cannot stop it, or shorten it, or lessen its severity. We can only hope to make the patient comfortable and to prevent the development of complications. The child should be put in bed and kept comfortably warm but not too warm. The room should be kept at the ordinary temperature of the sick room, 68 deg. to 70 deg. F. It should be darkened but not dark. The food should be fluid and given regularly. The child may be given all the cool,--not cold,--water it wants to drink. The bowels should be kept open daily. If constipation occurs an enema may be given. The eyes must be carefully watched and washed every hour or two during the day with a boracic acid solution. If the cough is distressing, it may be rendered less distressing, though we cannot hope to stop it until the disease has run its course. The restlessness, headache and general discomfort can be much modified by suitable remedies. If the itching is acute, the body can be rubbed with carbolated vaseline. When the rash subsides and the patient is free from fever a daily warm bath should be given in order to facilitate scaling. Should complications arise they should be promptly cared for by the attending physician. SUMMARY:-- 1. Measles is the most prevalent infectious disease of childhood. 2. The danger of measles has been and is underestimated. Because of its prevalency many mothers treat it with less respect than they should, with the result that fatal complications occur, or the future health of the child is permanently injured. 3. Children with measles should be put in bed and kept in bed and treated as directed above. The following rules have been formulated by the Department of Health of New York City, with reference to measles, and embody precautions that should find general observance: 1. All children in the family must be promptly excluded from school attendance. 2. Careful and continued isolation of the patient must be enforced until the case is terminated and fumigation has been ordered by the medical inspector of the Department. 3. All secondary cases must be reported even if the first case is still under surveillance of the Department of Health.