To the Editor:
—Dr. Neymann may be correct in his contentions (a) that the patients were of an unfavorable type and (b) that the treatment was inadequate according to present standards. My associates and I suggested the same possible objections. We know, however, that by malaria we can produce an arrest in most cases at any period of the disease, even the most demented.Before we can accept Dr. Neymann's statements of the remarkable therapeutic effects of diathermy we must have (1) a prolonged period of observation and (2) histologic verification of arrest of the syphilitic process in the brain.Eleven years' experience with malaria permits us to draw satisfactory conclusions, since these criteria have been met. Five years' experience with diathermy has given us no encouragement.