subject had been known to me, I do not believe that any evil would have come to me from the practice. At a later period of my life, say between 21 and 24, I would not indulge the habit for a considerable interval. At times I did not notice the presence or lack of desire. But then there would come periods when I would be under a severe sexual tension. This would be marked by intense nervousness, an inability to fix my attention upon any one thing, and a great desire to have intercourse. An act of masturbation at such a time would generally give relief. However, when I yielded to this form of relief, there would always follow feelings of profound self-reproach and of self-repugnance. Had I had nocturnal emissions they might have relieved me; but, as I have said before, they very rarely occurred. When, rarely, one did occur I would be greatly frightened, for I had the old, erroneous idea that they meant serious weakness and always ascribed them to my bad habit. That my habit of masturbation had any relation to the rarity of the involuntary emissions would, of course, be a matter of pure conjecture. In passing from the discussion of personal masturbation, I wish to say that my associations with boys as a pupil and as a teacher lead me to believe that the practice is practically universal. When discussing the hygienic evils of prostitution with boy pupils I have noted that, whereas not infrequently a boy will voluntarily protest that he has never had intercourse, there has always been a significant silence when masturbation is mentioned. I have never heard a boy make a denial, direct or indirect, that he had indulged in the practice. But it has seldom been a perversion. It has rather been, as in my own case, an available means of relieving a sexual impulse.