I am indebted for this case to a well-known English alienist, who remarks that the patient is fairly healthy to look at, but with neurasthenia and tendency to melancholia, and neurotic temperament. The body is masculine and pubic hair abundant. One testicle shows wasting. HISTORIES XXIX AND XXX.--I give the following narrative in the words of an intimate friend of one of the cases in question: "My attention was first drawn to the study of inversion--though I then regarded all forms of it as depraving and abominable--at a public school, where in our dormitory a boy of 15 initiated his select friends into the secrets of mutual masturbation, which he had learned from his brother, a midshipman. I gave no heed to this at the time, though I remembered it in after-years when immersed in Plato, Lucretius, and the Epicurean writers. But my attention was riveted to it at the age of 20, when I spent a holiday with A., a companion with whom I was, and still am, on terms of great friendship. We enjoyed many things in common, studied together and discussed most unconventional matters, but not this. Previously we had always occupied separate sleeping apartments; on this occasion we were abroad in a country place, and were compelled to put up with what we could get. We not only had to share a room, but a bed. I was not surprised at his throwing his arm over me, as I knew he was extraordinarily attached to me, and I had always felt a brute for not returning his affection so warmly. But I was surprised when later I awoke to find him occupied in _fellatio_ and endeavoring to obtain my response. Had it been anyone else I should have resented strongly such a liberty, and our acquaintance would have ended, but I cared for him too well, though never very demonstrative. This episode led to discussion of the topic. He told me that his sexual strength was great, that he had tested it in many ways, and that it was essential to his well-being that he should have satisfaction in some way. He loathed prostitution and considered it degrading; he felt physically attracted to some women and intellectually to others, but the two elements were never combined, and though he had been intimate with a few he felt that it was not right to them, as he could not marry them because he held too high an ideal of marriage. He had always felt attracted to his own sex, and had kept up a Platonic friendship with a college chum, X (to whom I knew he was passionately attached), for some years. Both considered it perfectly moral, and both, felt better for it. Both abhor _pedicatio_. X., however, would never discuss the subject, and seemed half-ashamed of it. A., on the other hand, though showing a great self-respect in all things else, feels no shame, though he says he would never discuss it