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In a communication to the association three years ago I reported the results in eighteen cases of cancer of the esophagus, treated by the implantation of radium emanation "seeds" under esophagoscopy. A temporary improvement, as evidenced by a greater ease in swallowing and a slight increase in weight, which lasted from a few weeks to a few months, was noted in most of the patients after this method of treatment. The improvement was only temporary in all cases, and I was unable to report any patient who had survived for more than eight months after the beginning of treatment. Patients treated by the same method since that time have shown practically the same results. With the introduction of the high voltage roentgen-ray treatment, it was hoped that a reinforcement of the effect of the radium emanations might be obtained which would produce more lasting benefit. In the present series of