"The motor outbreak during sleep, which drives one from rest in bed and results in sleep walking and wandering under the light of the moon, may be referred to this, that all sleep walkers exhibit a heightened muscular irritability and muscle erotic, the endogenous excitement of which can compensate for the giving up of the rest in bed. In accordance with this, these phenomena are especially frequent in the offspring of alcoholics, epileptics, sadists and hysterics, with preponderating involvement of the motor apparatus. "Sleep walking and moon walking are in themselves as little symptoms of hysteria as of epilepsy; yet they are found frequently in conjunction with the former. "The moon's light is reminiscent of the light in the hand of a beloved parent. Fixed gazing upon the planet also has probably an erotic colouring. "It seems possible that sleep walking and moon walking may be permanently cured through the psychoanalytic method." CHAPTER XI: PROPHETIC DREAMS Every one has heard relations of prophetic dreams which seem to imply a sense of unconscious sight going far beyond the limits of our conscious visual perceptions. It may be that, even as certain vibrations can be sent and received without any transmitting medium except the atmosphere, by wireless, certain visual information can be received, at times, under certain conditions, without any perception of such phenomena reaching the consciousness. At the same time, this is a field on which one must tread most carefully, for telepathy has never been studied very scientifically and the telepathic dreams which have been related to me or which I have read about had been recorded rather carelessly and the circumstances surrounding them had not been noted with the regard for accuracy which must characterize scientific research. A few times in my life, I have had the infinite surprise when lifting the telephone receiver, of hearing the voice of the very person I was going to call up and who had called me up at the same minute. On the other hand, I have endeavoured with the help of very intimate friends to effect synchronic transmission of thought and have failed dismally on every occasion. While I have never had prophetic dreams I have recorded one dream of mine which might be characterized as a "second sight" dream. One day I mislaid some documents which once belonged to my father. That night my father appeared to me and pointed to a desk drawer where the papers would be found. The next morning I looked in that drawer and found the documents. I certainly placed the documents myself in that drawer the day before and forgot the fact. But the unconscious memory of that action was retained and came up at night while my mind was at work solving the problem of the lost documents.