In May 1935 Mr. and Mrs. K. presented themselves with the problem of sterility. Both patients had been examined several times during their eleven years of married life. Neither husband nor wife had ever been operated on, nor had they at any time been ill other than with slight colds, and Mrs. K. with sinus trouble, which was a chronic condition, not severe enough to warrant operation. The last examination that they had undergone in an endeavor to determine the reason for their sterility occurred eight months before they presented themselves to me for reexamination. Mr. K. was examined first and found to be in excellent health. A specimen of seminal fluid was obtained by withdrawal, the material being collected in a sterile pyrex beaker. The count revealed 94,000,000 spermatozoa per cubic centimeter of fluid, abnormal forms 3 per cent, motility index eighteen hours, fertility index (?) and pus absent. The