other operates fluctuatingly and introduces motive forces of organic origin into the psychic life. Both originate in the infantile life and result from the transformation which our psychic and somatic organism has undergone since the infantile period.

When I termed one of the psychic processes in the psychic apparatus the primary process, I did so not only in consideration of the order of precedence and capability, but also as admitting the temporal relations to a share in the nomenclature.

As far as our knowledge goes there is no psychic apparatus possessing only the primary process, and in so far it is a theoretic fiction; but so much is based on fact that the primary processes are present in the apparatus from the beginning, while the secondary processes develop gradually in the