From a practical point of view this principle of the conservation of the experiences of the hypnotic state is of the utmost importance. The fact that a person does not remember them on waking—if such be the case—is of little consequence in principle, and, practically, this amnesia does not preclude these experiences from influencing the waking personality. _As experiences and potential memories they all belong to and are part of the personality._ The hypnotic experiences being conserved our personality may still be modified and determined in its judgments, points of view, and attitudes by them, as by other unrecognized memories when such modifications have been effected in the hypnotic state. When the last is the case the hypnotically modified judgments, etc., may introduce themselves into the content of consciousness in the waking state by association without being recognized as memories. There may be no recollection of the source of the new ideas, of the reason for the modification of a given judgment or attitude of mind, because there is no recollection of the hypnotic state as a whole; but so far as the new judgment or attitude is a reproduction of an hypnotic experience it is memory, although not perfect memory or recollection in the sense of localizing the experience in the past. This principle can easily be demonstrated experimentally. It is only necessary, for instance, to state to a suitably suggestible subject that the weather, with which previously he was discontented is, after all, fine; for although it is raining, still, the crops need rain; it will allay the dust and make motoring pleasant, it will give him an opportunity to finish his neglected correspondence, etc. The whole prospect, he is told, is pleasing. He accepts, we assume, the new point of view. He is then waked up and has complete amnesia for the experience. Now these ideas, developed in the hypnotic state, are conserved as potential memories. Though with the change of the moment-consciousness they cannot be voluntarily recalled, they have entered into associations to form a new viewpoint. Just speak to him about the weather and watch the result. His discontent has disappeared and given place to satisfaction. He expresses himself as quite pleased with the weather and gives the same reasons for his satisfaction as were suggested to and accepted by him in hypnosis. He does not recognize his new views as reproductions, i.e., memories, of previous experiences because he has no recollection of the hypnotic state. He does not remember when and how he changed his mind; but these experiences have determined his views because they have become a part of his conscious system of thought. The principle applies to a large part of our judgments not formed in hypnosis. There is nothing very remarkable about it. The process is similar to that of ordinary thought though it has had an artificial and different origin. The complex of ideas having been