Clarke lay back in his chair and wondered. It seemed as if he had but passed from one dream into another. He half expected to see the walls of the laboratory melt and disappear, and to awake in London, shuddering at his own sleeping fancies. But at last the door opened, and the doctor returned, and behind him came a girl of about seventeen, dressed all in white. She was so beautiful that Clarke did not wonder at what the doctor had written to him. She was blushing now over face and neck and arms, but Raymond seemed unmoved.