the final revelation comes when you look at these City-men on the train; for you realize that for them, the business of escaping is complicated by the fact that they think they are the prison. An astounding situation! Imagine a large castle on an island, with almost inescapable dungeons. The jailor has installed every device to prevent the prisoners escaping, and he has taken one final precaution: that of hypnotizing the prisoners, and then suggesting to them that they and the prison are one. When one of the prisoners awakes to the fact that he would like to be free, and suggests this to his fellow prisoners, they look at him with surprise and say: Tree from what? We are the castle.' What a situation!