For when Les returned, Waters and Crowley were watching the brief half-lives die out on the counters and making histograms in an effort to predict the safety-time. Mystified, tired of wondering, and utterly lonesome, Les Ackerman waited in the no-world life between two direct possibilities of man's existance. It was meaningless to Ackerman; perhaps it was meaningless to Nature herself. The complete incongruity of it all—and the conflicting evidences were beyond him. Trees and rock and ground were one; the building was there and so was that sere bowl of greenish glaze. At nightfall, his friends entered their cars by the laboratory and drove right through the still-crowding people of the other existance. Waters passed almost through his alter ego, and might have seen his friend Crowley twice—excepting that Waters, unlike Les Ackerman, could not see both coincident pathways of event. 2 Weary, utterly lonesome, and completely baffled about it all, Les Ackerman finally slept. On the hard ground he slept, loath to leave the scene. He was awakened by the sound of a voice speaking his name. Shaking his head, Les sat up, saw that it was just about sunrise, and answered instinctively, though he knew that his voice could not be heard. He could hear people—but people could not hear him; just as he could see people but they could not see him. "I'm right here," he said for, perhaps, the ten-thousandth time. He expected, for the ten-thousandth time, that he would not be heard. "Good," replied the voice. Then in the growing light, Ackerman saw a glistening, egg-shaped vehicle coming slowly through the grove of trees. It hovered above him and settled easily to the ground. The voice, he saw, came from a woman who was obviously driving the thing. There was a small hemisphere of glass thrown back from the 'top' of the vehicle, and the woman was head and shoulders above the level of the hull. She smiled, and Ackerman was instantly attracted. "Well," she said with an air of successful finality. "You've arrived." Ackerman shrugged. So far as he was concerned, the girl could get out of the vehicle and make passes at him; he was still as isolated from all people as a butterfly in a glass case at some moldy