We have already shown that in the child the sexual appetite manifests itself in a kind of obscure presentiment and vague sensations in the genital organs. If a young man cannot satisfy his sexual appetite naturally, the latter when it increases in strength provokes erotic dreams and nocturnal emissions; or artificial excitation of the penis may be practiced to produce orgasms: the latter phenomenon is called _masturbation_. Masturbation in man is performed by friction of the penis with the hand or against some soft body. In the latter case especially erotic images of naked women or female sexual organs is associated with onanism. This kind of masturbation may be called _compensatory_, because it does not depend on an anomaly of the sexual appetite, but serves to satisfy a natural want by compensation. There are a whole series of manipulations employed for the same object, which constitute the psychic equivalent of compensating masturbation. _In remote garrisons and in boys' schools the more libidinous individuals, usually those mentally tainted, often practice mutual masturbation or sodomy. This is the sex complex of the degenerate individual and in an effort to exterminate these pathological manifestations, they are being penalized by law, throughout the civilized world. It is unnecessary to prolong this enumeration. Those we have mentioned are the most common and it is agreed that men who are addicted to these practices are decidedly psychopathic, whether it may be caused by faulty heredity or anomaly in the psychology of the individual, this still remains to be proven. In reality they are often normal in other respects, but simply affected with sexual hyperæsthesia. Sometimes they are feeble-minded individuals who have recourse to such practices because they are derided by women. Others are cynics, more or less vicious in other respects._ Compensatory masturbation is extremely widespread, but it is as a rule neither recognized nor admitted because it is easy to conceal. Although depressing for those whose will power is overcome by an excitation which they cannot conquer, it is relatively the least dangerous form of onanism. At the most it leads to a certain amount of nervous and mental exhaustion by abuse of the facility of thus procuring a venereal orgasm. The loss of substance from frequent seminal ejaculations is also more or less weakening, although the secretion from the prostate plays a much greater part than the semen. But what especially affects the nervous system, is the repeated loss of the will, and the failure of resolutions made many times to overcome the desire for orgasm.