The following is an instance of the same phenomenon obtained by tapping without the use of previous suggestion in hypnosis: subject B. C. A. One of the hypnotic states, b, was waked up to become B, this change being followed, as usual, by amnesia. By means of automatic writing an accurate account was now obtained of the experiences which had taken place during the previous moments in hypnosis, the subject being unaware of what the hand wrote. Here were complete memories of the whole period of which the personal consciousness, B, had no knowledge. One of the most striking, not to say dramatic, demonstrations of this kind can sometimes be obtained in cases exhibiting several different hypnotic states. For instance: “c” and “b” are two different hypnotic phases belonging to the same individual (B. C. A.). c knows nothing of the experiences of b, and b nothing of c, each having amnesia for the other. Now one has only to whisper in the ear of c, asking a question of b, and at once, by automatic speech, the dormant b phase responds, giving such information as is sought in proof of the conservation of any given experience belonging to the tapped b phase. The consciousness of c apparently continues uninterruptedly during the experiment. The same evidence could be obtained by automatic writing under the same conditions. Again in the b phase another state known as “Alpha and Omega” can be tapped, giving similar evidence of conservation. In the case of Miss B. the same phenomena could be elicited. In this respect hypnotic states may show the same behavior as alternating personalities of which I shall presently speak. Suggested _post-hypnotic phenomena_ depend, in part, on the conservation of dormant complexes. In hypnosis I give a suggestion that the subject on waking shall, at a given moment, take a cigarette and smoke it. There is thus formed a complex of ideas which becomes dormant and forgotten after waking. Later, by some mechanism which we need not inquire into now, the ideas of the dormant complex enter the field of the personal self; the idea of smoking a cigarette arises therein and the subject puts the idea into execution. These consequences of the suggestion could not occur unless the experiences were conserved. Or, we may take an experiment where the hypnotic experiences are reproduced automatically by writing. Here the conserved experiences form a secondary system split off from the personal consciousness. This system reproduces the hypnotic experiences as memory outside of the personal consciousness.