In the literature of this subject, there are a few cases belonging here:— Case 91. A boy, aged 12, became powerfully excited sexually when he chanced to put on a fox-skin. From that time there was masturbation with the employment of furs, or by means of taking a furry dog to bed. Ejaculation would result, sometimes followed by an hysterical attack. His nocturnal pollutions were induced by dreaming that he lay entirely covered up in a white skin. He was absolutely insusceptible to stimuli coming from men or women. He was neurasthenic, suffered with delusions of being watched, and thought that every one noticed his sexual anomaly. He had tædium vitæ on account of this, and finally became insane. He had marked taint; his genitals were imperfectly formed, and he presented other signs of degeneration. (Tarnowsky, _op. cit._, p. 22.) Case 92. C. is an especial lover of velvet. He is attracted in a normal way by beautiful women, but it particularly excites him to have the person with whom he has sexual intercourse dressed in velvet. In this, it is remarkable that it is not so much the sight as the touch of the velvet that causes the excitation. C. told me that stroking a woman’s velvet jacket would excite him sexually to an extent scarcely possible in any other way. (Dr. Moll, _op. cit._, p. 127.) The following is a very peculiar case of material-fetichism. It is combined with the impulse to injure the fetich, which, in this case, represents an element of sadism toward the woman wearing the fetich, or impersonal sadism toward objects, which is of frequent occurrence in fetichists (comp. p. 170). This impulse to injure made this a remarkable criminal case:—