It was nearly a year later that I experienced the first unmistakable manifestations of the sexual impulse--erections accompanied by lustful feeling and vague desires of whose proper satisfaction I had no notion whatever. It never occurred to me to associate my experiences with the servant girl with these new sensations. The peculiar fact about them was that they were generally occasioned by the infliction of pain upon animals. I do not remember how I first discovered that they could be evoked in this way, but I can clearly recollect many of my efforts to arouse this pleasurable excitement by abusing the dog or the cats, or by prodding the calves with a nail set in the end of a broom handle. I seldom manipulated my genitals at this time, and when I did it was for the purpose of causing sexual excitement rather than allaying it. During this same year I got my first idea of sexual intercourse by watching animals copulate; but my powers of observation must have been limited, for I supposed that the penis of the male entered the anus of the female. In watching the coitus of animals I experienced lively sexual excitement and lustful sensations, located not only in the genitals, but apparently in the anus as well. I often excited, myself by imagining myself playing the part of the female animal--a peculiar combination of passive pederasty and bestiality. A servant girl put me to right on the error of observation just mentioned, but neglected to apply the principle to human animals, and I remained for another year in complete ignorance of the structure of woman's sexual organs and of the intercourse between man and woman. In the meantime I cultivated my fancies of intercourse with animals, often still perversely imagining myself taking the part of the female; and the notion of such relationships gradually became so familiar as to seem possible and desirable. This is especially significant in view of later developments. Up to my eleventh or twelfth year the erotic element in my daydreaming varied with the seasons. In the summer it played a dominant part, while in the winter it was almost entirely absent, owing, it may be, to the fact that most of my time was spent indoors or on long, tiresome tramps to and from school, and the further fact that during the winter I saw but little of the animals which had acted as a stimulus to sexual excitement. So little was I troubled in winter and so ignorant was I of normal intercourse that sleeping with a cousin, a girl of about my own age (7 or 8 years), resulted in no addition to my knowledge of things sexual.