The power to demonstrate loud noise was evidently impossible to the creatures, for their only sounds came to Madge Crawford and John Lambert as long-drawn out, almost unbearable squeaks, mouse-like in character. Perhaps they had never had the faculty of speech, since they did not need it to communicate with one another; perhaps they realized that the racket they could make would hurt them as much as it did their enemies. Lambert, Madge clinging to him, was forced backward down the slope, and the beings had the advantage of height. He could not again reach the eminence, but the way behind seemed to clear quickly enough, though thrusts were made at him, innumerable times with the torture-fields. The hordes pushed them backward, and ever back. * * * * * They were forced on for some distance. As they retreated, the way become easier, and fewer and fewer of the beings impeded the channel along which they moved, though in front of them and on all sides, above, beneath, they were pressed by the hordes. "They are forcing us to some place they want us to go," said Lambert desperately. "We can do nothing more," replied the girl. Lambert felt her quiet confidence in him, and that as long as they were together, all was well. "Maybe they can kill us, somehow," he said. And now, Lambert felt the way was clear to the rear. There was a sudden rush of the creatures, and needlelike fields were impelled viciously into the spaces the two humans occupied. Madge cried out in pain, and Lambert shouted. The throng drew away from them as suddenly as it had surged forward, and an instant later the pair, clinging together, felt that they were falling, falling, falling.... "Are you all right, Madge?" "Yes, John." But he knew she was suffering. How long they fell he did not know, but they stopped at last. No sooner had they come to rest than they were assailed with sensations of pain which made both cry out in anguish. There, in the spot where they had been thrust by the hordes, they felt that there was some terrific vibration which racked and tore at their invisible forms continuously, sending them into spasms of sharp misery. They both were forced to give vent to their feelings by loud cries. But they could not command their movements any longer. When they tried to get away, their limbs moved but they felt that they remained in the same spot. * * * * * The pain shook every fraction of their souls. "We--we are in some pit of hell, into which they have thrown us, John," gasped Madge. He knew she was shivering with the torture of that great vibration from which there was no escape, that they were in a prison-pit of Hell's Dimension. "I--oh--John--I'm dying!"