It is true, as a study of the coconscious would show, that such phenomena of anesthesia and unrecognized perceptions are dependent upon a dissociation of consciousness and upon coconscious perception. But this is a matter of mechanism with which we are not now concerned. The point simply is that subconscious perceptions which never entered the awareness of the personal consciousness may be conserved. I will cite one more observation, one in which the reproduction was through secondary translation, as we shall see later that it belongs to a class which enables us to determine the nature of conservation. B. C. A., actuated by curiosity, looked into a crystal and saw there some printed words which had no meaning for her whatever and awakened no memory of any previous experience. It was afterward found that these words represented a cablegram message which she unconsciously overheard while it was being transmitted over the telephone to the telegraph office by my secretary in the next room. She had no recollection of having heard the words, as she was absorbed in reading a book at the time. The correctness of the visual reproduction is shown, not only by automatic writing which remembered and recorded the whole experience, but also by comparison with the original cablegram. Again, in other experiments there appear, in the crystal, visions rich in detail of persons whom she does not remember having seen, although it can be proved that she actually has seen them. The reproduction of subconscious perceptions and forgotten knowledge in dreams, visions, hypnosis, trance states, by automatic writing, etc., is interesting apart from the theory of memory. Facts of this kind offer a rational interpretation of many well-authenticated phenomena exploited in spiritistic literature. Much of the surprising information given by planchette, table rapping, and similar devices commonly employed by mediums, depends upon the translation of forgotten dormant experiences into manifestations of this sort. In clinical medicine, too, we can often learn, through reproductions obtained by special methods of investigation, the origin of obsessions and other ideas which otherwise are unintelligible.