WHILE a graduate student and National Research Fellow in Physics, from 1920 to 1923, at the University of Chicago, I had the opportunity to cooperate with Dr. J. Gordon Wilson of Northwestern University Medical School in studying various types of deafness. Many of our studies were presented to physicians and physical therapeutists. I have maintained my interest in diseases of the ear and their effects on hearing during the intervening years. The subject of diplacusis is one rarely met with and little discussed. Dr. Wilson and I reported on 1 case.1 It is felt that the following discussion involving my case of diplacusis may prove of interest to the otologist and add to our early statement of 1923. Dr. R. S. Yancey of Dallas has been interested in the case and has made the medical treatments involved.
REPORT OF A CASE
History.—On Dec. 5, 1944, I was visiting one of