*Sexual Utilization of the Anal Opening.*--It is even more obvious than in the former case that it is the loathing which stamps as a perversion the use of the anus as a sexual aim. But it should not be interpreted as espousing a cause when I observe that the basis of this loathing--namely, that this part of the body serves for the excretion and comes in contact with the loathsome excrement--is not more plausible than the basis which hysterical girls have for the disgust which they entertain for the male genital because it serves for urination. The sexual rôle of the mucous membrane of the anus is by no means limited to intercourse between men; its preference has nothing characteristic of the inverted feeling. On the contrary, it seems that the _pedicatio_ of the man owes its rôle to the analogy with the act in the woman, whereas among inverts it is mutual masturbation which is the most common sexual aim. *The Significance of Other Parts of the Body.*--Sexual infringement on the other parts of the body, in all its variations, offers nothing new; it adds nothing to our knowledge of the sexual impulse which herein only announces its intention to dominate the sexual object in every way. Besides the sexual overvaluation, a second and generally unknown factor may be mentioned among the anatomical transgressions. Certain parts of the body, like the mucous membrane of the mouth and anus, which repeatedly appear in such practices, lay claim as it were to be considered and treated as genitals. We shall hear how this claim is justified by the development of the sexual impulse, and how it is fulfilled in the symptomatology of certain morbid conditions. *Unfit Substitutes for the Sexual Object. Fetichism.*--We are especially impressed by those cases in which for the normal sexual object another is substituted which is related to it but which is totally unfit for the normal sexual aim. According to the scheme of the introduction we should have done better to mention this most interesting group of aberrations of the sexual impulse among the deviations in reference to the sexual object, but we have deferred mention of these until we became acquainted with the factor of sexual overestimation, upon which these manifestations, connected with the relinquishing of the sexual aim, depend. The substitute for the sexual object is generally a part of the body but little adapted for sexual purposes, such as the foot, or hair, or an inanimate object which is in demonstrable relation with the sexual person, and preferably with the sexuality of the same (fragments of clothing, white underwear). This substitution is not unjustly compared with the fetich in which the savage sees the embodiment of his god.