Mr. S., 23 years of age, had suffered from gonorrhoea a few years previously. He has practised stuprum manu moderately at the time of puberty. Later on he associated cum meretricibus. He always considered himself healthy. The seminal discharge was somewhat precipitated, but the patient attributed this phenomenon to his extraordinary strength and was rather proud of it. When he became engaged to his present wife he abstained henceforth from illicit relations. Two days before the consultation the patient married and, upon approaching his young bride, found that the erection was too weak to transgress the virginal portals. After his first failure, every repeated attempt caused the penis to shrink almost half the normal size of the flaccid condition. The wife’s genitals were perfectly normal. She did not suffer from vaginism. Therapeutic suggestion and a medicinal tonic (ut aliquid fiat) removed the anomaly in a few days. In this case the anaphrodisiac of fear after the first failure was the cause of the impotence. Psychic impotence is sometimes present for a short time after long continued abstinence in men who for some reason have interrupted their regular sexual relations. Young men who have never had yet any sex relations are never affected by mere abstinence. Psychic impotence is not seldom found in men with a certain vocation requiring great mental strain, as literary men, bookworms, mathematicians, engineers, etc. Extreme excitement and desire may cause temporary impotence. The number of stimuli arriving from the brain is too vast and paralyzes the centre of erection. A violent lover, who has for a long time repressed his desires, plunges his entire organism, in the moment of their realization, into a kind of ecstasy. His soul, i. e., the immaterial part of his being, concentrates in the object of his desires all his force and vitality. He appears entirely to forget his organs which ordinarily serve to transmit his desires. It is hence first necessary for him that everything be restored to the ordinary channel, that the moral over-excitation ceases or that it returns at least to the normal type of simple excitation, before the centre of erection will have power to exercise its function. Want of responsiveness from the mate has sometimes a disadvantageous effect upon the man. Hence obstacles, on the side of the woman, will not seldom cause psychic impotence. The history of the following case is characteristic of this kind of disturbances: