Deft and intelligently applied technique are certainly required in the correction of these cervical lesions. Treatment should be given thrice weekly (never less than twice for progress) with definitely established mental tests before, to discern the mental level, and at succeeding periods of three months each, noting progress, if any. The Binet-Simon scale or some other available mental test should always be made and record carefully kept of each case for your own benefit as well as the patient’s. After six months, if no appreciable gain is shown treatment is discontinued and the case must be cared for in another manner as beyond your special field of effort. Usually it is apparent by the end of the third month if anything can be done to improve the mentality. The physical advantages, in some cases warrant continued treatment where there is no appreciable mental gain. Institutional care of these types is the only practical means of handling them properly from an osteopathic standpoint, as it requires some one properly equipped to make your tests and keep your record;—it is sufficient for the doctor to do the work demanded. They can thus be classified and progress systematically shown. The higher grades must be taught and though self dependence may never be attained they can in many cases by training be capable of useful pursuits and quite frequently remunerative work. It makes for happiness at least to keep them busy and forestalls the mischief that would otherwise result. Even imbeciles can help in routine work of an institution or home, and idiots may, by training, gain some power of self help and cleanliness. Training depends on the individual capacity for such in each case—his habits, and general character of his propensities. Prevention of their marriage should be positive and for prevention of their propagation this and their sterilization by operation are the only two measures at hand. Sterilization, however, is repugnant to some elements of society and could be abused, hence the segregation of aments would appear to be our only solution at present. The ultimate intention of treating any case is to use any measure tending to stabilize the nervous system. Corrective effort alone is not sufficient but these osteopathic endeavors in conjunction with proper discipline, good food, regular rest and personal hygiene both mental and physical and a scrutinizing restriction tending to any kind of excess is rendering the osteopathic procedure in such cases rapidly indispensable for the treatment of amentia. POST-OPERATIVE TREATMENT By GEORGE A. STILL