In the beginning of 1887, this physician was arrested for having commuted acts of indecency on the persons of two boys under fourteen years. The crime consisted in his having first rubbed mentulam propriam inter femora viri until ejaculatio, and the same procedure cum mentula propria inter femora pueri. At the examination it was recognized that an abnormal instinct was in play, though, at the same time, it was shown that the culprit was not mentally unsound, and not deprived of free will; at least, he had not acted in obedience to an uncontrollable impulse. Therefore, he was sentenced to prison for one year, the mildest possible punishment. Case 113. Mr. X., Hungarian, merchant, consulted me on account of neurasthenia and sleeplessness, which had existed for years. The investigation of the cause of his trouble led the patient to confess that he had an abnormal sexual instinct for his own sex, that he was very passionate, and that his nervous trouble might well come from that. The following, taken from the history of this intelligent patient, possesses scientific interest:— “My abnormal sexual instinct reaches back to my childhood. When three years old, I got hold of a journal of fashions. The beautiful pictures of the men I kissed until the paper was torn to tatters, but I paid no attention to the female figures. I did not like to play with boys. I preferred to play with girls, because they always had dolls. I especially liked to cut out dolls’ clothes; and to-day, in spite of my thirty-three years, dolls still possess an interest for me. When a boy, for hours I would lurk about available places, in order to get a sight of male genitals. When I succeeded, a strange, dizzy feeling came over me. Weak, unattractive men or boys made no impression on me. At thirteen I began to masturbate. From my thirteenth till my fifteenth year, I slept with a handsome young man. That was happiness. Hours at a time at night, with erections, I would wait for his return. If in bed he chanced to touch my genitals, it gave me delight. At fourteen I had a school-mate whose instincts were like my own. For hours at a time, during school-hours, we held each other’s genitals. Ah, those were happy hours! As often as I could, I lingered in bath-houses. That was always a feast for me. The sight of male genitals induced violent erections. At sixteen I came to the metropolis. Seeing so many handsome men charmed me. In my eighteenth year I attempted coitus with a prostitute, but disgust and fear made it impossible. Other attempts were failures, until my nineteenth year, when I tried again with success; but the act afforded me no pleasure, rather inducing a feeling of disgust. I conquered myself, and was proud of my success at being a man, which I had gradually begun to doubt.