Smith's agent rushed back to the engine-room, where he immediately located a new group of instruments. Smith recognized a telephone and some wireless apparatus; then found himself staring into some sort of a compound mirror system. Probably it was an illuminated tunnel affair, opening into a long white cabin. Seemingly the place was an emergency-ward. A moment later the unconscious forms of the two aviators were brought within perhaps twenty feet. Smith could hear nothing; the apparatus seemed made for looking only. But he saw the doctors hurry in, saw restoratives administered, and saw both people revive. The man was first to become conscious. He looked around, seemed to take in the situation at a glance, and swiftly got to his feet. The doctors laid restraining hands upon him, but he shook them off with a laugh. He was a powerfully built man, considerably taller than normal and very deep in the chest. He was decidedly blond, and good looking in a cheerful, reckless sort of way. His concern was for the woman. She regained her senses in half a minute, and shortly was sitting up and looking around. And Smith, ordinarily unobservant of the other sex, found himself staring with all his eyes. She was young; for that matter, the man was under thirty, also. And the white bandage on her forehead only emphasized the dark eyes and vivid coloring of her face. Smith was half angry that he could not see her more distinctly. He decided that every feature was exquisitely modeled, that he had never seen such delicate lines, nor eyes as large, as appealing and as soft. Then he was watching the man again. He approached the woman and took her outstretched hand. He was laughing easily; she, smiling tremulously and gratefully. They looked into one another's eyes quite as though there were no one else in the cabin to be looked at. Next second one of the doctors stepped up bruskly, and Smith saw a swift blush come to the girl's cheeks. The man reddened, too, and turned away laughing to hide his confusion. Smith's connection with his agent ended right there. When he reported to the other three, later on, he had to admit that, so far as he knew, the man and the girl were still holding hands. IV NEW HEARTS FOR OLD Billie's experience was totally different. She found herself transformed into a mental humming-bird. Her mind seemed to be darting with infinite rapidity, here and there throughout the universe. She got only the most lightninglike glimpse of any one spot; flash after flash of unfamiliar, indescribable situations succeeded each other like the speeded-up scenes of a photoplay farce. For an unguessable length of time this helter-skelter process occupied her mind. Then there came a scene which stayed. It was dim at first; she was more thoroughly aware of the sound of voices than anything else. Then she saw clearly.