Before the discovery of radium by Mme. Curie, the treatment of cancer of the cervix uteri was by local destruction of the carcinomatous tissue with some form of cauterization, or by operation. The technic of the radical operation, as developed by Wertheim, gave so much better results than other operative procedures that up to the last ten years practically no other treatment has been used. The question today before us is, Can we with radium obtain the same result in treating cancer of the cervix as can be obtained by the Wertheim operation without its high primary mortality? No one questions the palliative effect of radium in the inoperable cases of carcinoma of the cervix, but to ascertain the true value of irradiation one must compare the results by operation with the results by irradiation in operable cases of carcinoma of the cervix uteri. At this time there are only