is not properly recognized in the dream, but is intermingled with a number of indefinite interpretations, whose determination appears left to psychical free-will. There is, of course, no such psychical free-will. To an external sense-stimulus the sleeper can react in many ways. Either he awakens or he succeeds in sleeping on. In the latter case he can make use of the dream to dismiss the external stimulus, and this, again, in more ways than one.

For instance, he can stay the stimulus by dreaming of a scene which is absolutely intolerable to him. This was the means used by one who was troubled by a painful perineal abscess. He dreamt that he was on horseback, and made use of the poultice, which was intended to alleviate his pain, as a saddle, and thus got away from the cause of the trouble. Or, as is more frequently the