I do not wish to go any further to-day, but since our time is not yet up I intend to call your attention to another characteristic of our two analyses, namely, the memory gaps or amnesias, whose full appreciation will be possible later. You have heard that it is possible to express the object of psychoanalytic treatment in a formula: all pathogenic unconscious experience must be transposed into consciousness. You will perhaps be surprised to learn that this formula can be replaced by another: all the memory gaps of the patient must be filled out, his amnesias must be abolished. Practically this amounts to the same thing. Therefore an important role in the development of his symptoms must be accredited to the amnesias of the neurotic. The analysis of our first case, however, will hardly justify this valuation of the amnesia. The patient has not forgotten the scene from which the compulsion act derives--on the contrary, she remembers it vividly, nor is there any other forgotten factor which comes into play in the development of these symptoms. Less clear, but entirely analogous, is the situation in the case of our second patient, the girl with the compulsive ritual. She, too, has not really forgotten the behavior of her early years, the fact that she insisted that the door between her bedroom and that of her parents be kept open, and that she banished her mother out of her place in her parents' bed. She recalls all this very clearly, although hesitatingly and unwillingly. Only one factor stands out strikingly in our first case, that though the patient carries out her compulsive act innumerable times, she is not once reminded of its similarity with the experience after the bridal-night; nor was this memory even suggested when by direct questions she was asked to search for its motivation. The same is true of the girl, for in her case not only her ritual, but the situation which provoked it, is repeated identically night after night. In neither case is there any actual amnesia, no lapse of memory, but an association is broken off which should have called out a reproduction, a revival in the memory. Such a disturbance is enough to bring on a compulsion neurosis. Hysteria, however, shows a different picture, for it is usually characterized by most grandiose amnesias. As a rule, in the analysis of each hysterical symptom, one is led back to a whole chain of impressions which, upon their recovery, are expressly designated as forgotten up to the moment. On the one hand this chain extends back to the earliest years of life, so that the hysterical amnesias may be regarded as the direct continuation of the infantile amnesias, which hides the beginnings of our psychic life from those of us who are normal. On the other hand, we discover with surprise that the most recent experiences of the patient are blurred by these losses of memory--that especially the provocations which favored or brought on the