We now have available for statistical study 527 cases of myomas and other benign lesions causing uterine hemorrhages which have been treated by irradiation in the gynecologic department of the university hospital. In various publications, we have defined from time to time the indications for and contraindications to this treatment; and we have carefully followed a set of rules which clinical experience has taught us are essential safeguards. The patient who falls into the hands of a radiologist who is not a surgeon, or the surgeon who does not employ this valuable remedy as part of his armamentarium, is indeed riding on perilous waters; for neither irradiation nor surgery can be employed exclusively if the best interests of the patient are to be served. Radium in the treatment of uterine hemorrhage of benign origin is chiefly applicable to patients in the fourth and fifth decades of life; but with proper