The author has reported his results covering 315 cases at the twenty-second Deutsche Gynäkologenkongress and at the third Internationale Radiologenkongress, both held in 1931. He divides his material into three parts, which includes temporary roentgen sterilization and permanent exovulation. He discusses the fundamental principles, gives his technic, and incorporates useful tables of dosage. A third part is added, which he devotes to a consideration of a combination of ovarian and splenic irradiation. He concludes from his experience that temporary sterilization is a valuable procedure but the subjective symptoms are marked in about 10 per cent of the cases. He advises the technic of Seitz-Wintz for centralization over the ovaries, and believes in the four-field exposure. The inflammatory adnexal diseases require a heavier dose than cases of ovarian and functional uterine bleeding and than the smaller group of fibromyomas. Other conditions, as pulmonary tuberculosis, may be favorably influenced by temporary amenorrhea.