Dr. Harms begins by noting that juvenile hysteria, which was common before 1915, is seldom seen today, while juvenile schizophrenia has become an increasingly popular diagnostic entity. This shift in emphasis makes the author suspect that terminological fads exercise an undue influence on diagnosis, and he, therefore, undertakes to examine the concepts of hysteria and schizophrenia with a view to differentiating clearly between them. One finds no new ideas in Dr. Harms's paper but rather a collection of high-sounding phrases which are abstract, meaningless and confusing because they are not tied in with any clinical material. The task which he sets himself has been performed much more ably by other writers, beginning with Freud.