The paper by Mr. Smith, in which I have been greatly interested, is nevertheless outside my own particular field of study, which is gynaecology. Only in so far as I have carried out artificial insemination, using donated human semen, have I come in contact with a certain number of males in a somewhat comparable manner. I have also dealt with the seminal analyses of the husbands, because it is my practice to insist that the husbands of all subfertile patients should also be examined.