But in those few seconds a terrific holocaust had taken place. As Phobar's keys spattered against the fifth lever, there came an immediate, growing, strange, high whine, and a sickening collapse of the very surface beneath them. Everywhere outlines of objects wavered, changed melted, shrank with a steady and nauseatingly swift motion. The roof of the laboratory high overhead plunged downward; the far-distant walls swept inward, contracted. And the metal monsters themselves dwindled as though they were vast rubber figures from which the air was hissing. * * * * * Phobar sprang back as the tentacle whipped after him. Only that jump and the suddenly dwarfing dimensions of the giant saved him. And even in that instant of wild action, Phobar shouted aloud--for this whole world was collapsing, together with everything on it, except he himself who came of a different universe and remained unaffected! It was the long shot he had gambled on, the one chance he had to strike a blow. All over the shrinking laboratory the monsters were rushing toward him. His dwindling captor flung another tentacle toward the control-panel to replace the size-regulating lever. But Phobar had anticipated that possibility and had already leaped to the switchboard, sweeping a heavy bar from its place and crashing it down on the lever so that it could not be replaced without being repaired. Almost in the same move he had bounded away again, the former hundred-foot giant now scarcely more than his own height. But throughout the laboratory, the other metal things had halted in their tasks and were racing onward. Phobar always remembered that battle in the laboratory as a scene from some horrible nightmare. The catastrophe came so rapidly that he could hardly follow the whirlwind events. The half dozen great leaps he made from the lashing tentacles of his pursuer sufficed to give him a few seconds' respite, and then the weird, howling sound of the tortured world swelled to a piercing wail. His lungs were laboring from the violence of his exertions; again and again he barely escaped from the curling whips of metal tentacles. And now the monster was hardly a foot high; the huge condensers and tubes and colossal machinery were like those of a pygmy laboratory. And overhead the roof plunged ever downward. But Phobar was cornered at last. He stood in the center of a circle of the foot-high things. His captor suddenly shot forth a dozen rope-like arms toward him as the others closed in. He had not even a weapon, for he had dropped the bar in his first mad bound away from the control-panel. He saw himself trapped in his own trick, for in minutes at most the laboratory would be crushing him with fearful force. * * * * *