But there was no need to talk. The creatures, disturbed by the bombs, had collected in one spot and, shown the way out by one of their number, were coming. Espinosa, with Kenneth Gurlone holding his hand, ran swiftly for the hills surrounding the valley. Maget helped old Professor Gurlone, who was so out of breath that he could scarcely move. The great beetle which had been pursuing them was the first to break forth into the valley. Turning back for a look over his shoulder, Maget saw the thing pause, but the cavern belched forth a vast array of monsters, the beasts roaring, hissing, bellowing, in an increasing mass of sound. They swarmed over the ground, and giant bats and moths winged their way about the heads of the monsters. At the rim of the valley, the four men paused. "God help the peons," said Kenneth Gurlone. * * * * * Now the horde of monsters swelled more and more; the bats and moths winged in mad frenzy about the open door of the radium shack. There were great beetles, centipedes, ants, crickets, hopping, crawling things, and grotesquely immense in size. Fights progressed here and there, but the majority of them were carried along in the sweep of the multitude. "See, the radium kills those who get too close," said Professor Gurlone, in a hushed voice. The giant moths and bats were unable to withstand the lure of the green light. They flew with mad beatings of wings straight for the open door of the death house, and many of the great creatures, attracted by the light and urged on by an unexplainable force which sent them to death like gnats and moths in a flame, crowded near to the death-dealing radium. Not until the whole shack was covered with quivering forms of the dead, did the other creatures veer off and with hops, creepings and myriad giant legs, begin to cover the whole valley. The stone walls of the death shack had crumpled in with the weight; the other buildings, more lightly built, gave at once, with crackings and crashings. The four men were powerless to assist the unfortunate peons, who were trapped in their barracks. The charged wires stopped many of the big beasts, but soon the electric light was short-circuited, and the valley, in the moonlight, was a seething mass of fighting, dying, feasting monsters. * * * * * Other sounds, besides those made by the big creatures, came to the ears of the stricken men on the hillside. The breaking of glass, the cries of the jungle animals trapped in their cages, the shrieks of dying peons who were eaten at a gulp by the big frogs or stung to death, impaled on the mandibles of some great stinging centipede. In the spot where the radium death shack had been, was a pulpy mass of livid, smoky light. Now the bowl of the valley was filled as by some vast jelly. The creatures were slopping over the walls, and battling together.