It would seem superfluous to stress the importance of psychic factors in the causation of enuresis in children. The significance of these factors has been realized for many years and has been emphasized by all who have studied the subject. Only recently this aspect was fully considered by Anderson,1 who reviewed the literature in an exhaustive and admirable manner. The object of the present paper is not to call attention to the psychic factor, but rather to show that this factor is capable of experimental study; in other words, that it can to a large extent be controlled and regulated at will. As far as we are aware, no study of this kind has been reported. It seemed that if a technic of this nature could be established, it would render possible an accurate study of this disturbing disorder and, incidentally, an appraisal of the many pharmacologic and therapeutic