The infantile onanism seems to disappear after a brief time, but it may continue uninterruptedly till puberty and thus represent the first marked deviation from the development desirable for civilized man. At some time during childhood after the nursing period, the sexual impulse of the genitals reawakens and continues active for some time until it is again suppressed, or it may continue without interruption. The possible relations are very diverse and can only be elucidated through a more precise analysis of individual cases. The details, however, of this _second_ infantile sexual activity leave behind the profoundest (unconscious) impressions in the persons's memory; if the individual remains healthy they determine his character and if he becomes sick after puberty they determine the symptomatology of his neurosis.[16] In the latter case it is found that this sexual period is forgotten and the conscious reminiscences pointing to them are displaced; I have already mentioned that I would like to connect the normal infantile amnesia with this infantile sexual activity. By psychoanalytic investigation it is possible to bring to consciousness the forgotten material, and thereby to remove a compulsion which emanates from the unconscious psychic material. *The Return of the Infantile Masturbation.*--The sexual excitation of the nursing period returns during the designated years of childhood as a centrally determined tickling sensation demanding onanistic gratification, or as a pollution-like process which, analogous to the pollution of maturity, may attain gratification without the aid of any action. The latter case is more frequent in girls and in the second half of childhood; its determinants are not well understood, but it often, though not regularly, seems to have as a basis a period of early active onanism. The symptomatology of this sexual manifestation is poor; the genital apparatus is still undeveloped and all signs are therefore displayed by the urinary apparatus which is, so to say, the guardian of the genital apparatus. Most of the so-called bladder disturbances of this period are of a sexual nature; whenever the enuresis nocturna does not represent an epileptic attack it corresponds to a pollution.