He stretched out on the bed contentedly. "Some day, when my work is nearly done, I shall permit the Life Ray to cure my hump." "Why not now?" Dr. Mundson sighed. "If I were perfect, I should cease to be so overwhelmingly conscious of the importance of perfection." He settled back to enjoyment of the Life Ray. A few minutes later, he jumped up, alert as a boy. "_Ach!_ That's fine. Now I'll show you how the Life Ray speeds up development and produces four generations of humans a year." With restored energy, Northwood began thinking of Athalia. As he followed Dr. Mundson down a long corridor, he yearned to see her again, to be certain that she was safe. Once he imagined he felt a gentle, soft-fleshed touch against his hand, and was disappointed not to see her walking by his side. Was she with him, unseen? The thought was sweet. Before Dr. Mundson opened the massive bronze door at the end of the corridor, he said: "Don't be surprised or shocked over anything you see here, John Northwood. This is the Baby Laboratory." They entered a room which seemed no different from a hospital ward. On little white beds lay naked children of various sizes, perfect, solemn-eyed youngsters and older children as beautiful as animated statues. Above each bed was a small Life Ray projector. A white-capped nurse went from bed to bed. "They are recuperating from the daily educational period," said the scientist. "After a few minutes of this they will go into the growing room, which I shall have to show you through a window. Should you and I enter, we might be changed in a most extraordinary manner." He laughed mischievously. "But, look, Northwood!" * * * * * He slid back a panel in the wall, and Northwood peered in through a thick pane of clear glass. The room was really an immense outdoor arena, its only carpet the fine-bladed grass, its roof the blue sky cut in the middle by an enormous disc from which shot the aurora of trapped sunshine which made a golden umbrella over the valley. Through openings in the bottom of the disc poured a fine rain of rays which fell constantly upon groups of children, youths and young girls, all clad in the merest scraps of clothing. Some were dancing, others were playing games, but all seemed as supremely happy as the birds and butterflies which fluttered about the shrubs and flowers edging the arena. "I don't expect you to believe," said Dr. Mundson, "that the oldest young man in there is three months old. You cannot see visible changes in a body which grows as slowly as the human being, whose normal period of development is twenty years or more. But I can give you visible proof of how fast growth takes place under the full power of the Life Ray. Plant life, which, even when left to nature, often develops from seed to flower within a few weeks or months, can be seen making its miraculous changes under the Life Ray. Watch those gorgeous purple flowers over which the butterflies are hovering."