"The cyanide has worked," cried the doctor, "and in its last agonies the creature has turned on its creator and destroyed him. It is a shame, for Saranoff was a brilliant although perverted genius, and besides, I would have liked to have learned his method. However, I may find something when we open the land end and raid the cave; and really, he was too brilliant a man to hang for murder. Once we open the cave and I get any data that is there, my connection with the case will end. Trailing down the gold and recovering it is a routine matter for Bolton, and one in which he won't need my help." "What about that creature we saw in the cave, Doctor? Won't it hatch into another terror of the sea like the thing that destroyed the ship?" "The trochosphere? No, I'm not worried there. It won't try to leave the cave for some days yet, and by that time we'll have the land end opened and the floodlights turned on. They will keep it there and it will starve to death. We could send down a sub to feed it a torpedo, but there's no need. Nature will dispose of it. Meanwhile, I hope the _Minneconsin_ rigs up a jury tackle pretty soon and takes us on board. I'm getting seasick." * * * * * _IN THE NEXT ISSUE_ THE FIFTH-DIMENSION CATAPULT _A Novelette of an Extraordinary Interdimensional Rescue_ _By_ Murray Leinster THE GATE TO XORAN _A Thrilling Story of a Metal Man's Visit to Earth_ _By_ Hal K. Wells THE EYE OF ALLAH _A Story of the Tracking Down of a Mysterious Scientific Killer_ _By_ C. D. Willard THE PIRATE PLANET _Part Three of the Outstanding Current Novel_ _By_ Charles W. Diffin ----_AND OTHERS_! * * * * * Gray Denim _By Harl Vincent_ The blood of the Van Dorn's ran in Karl's veins. He rode the skies like an avenging god. [Illustration: _There came a stabbing pencil of light from over Karl's shoulder._] Beneath the huge central arch in Cooper Square a meeting was in progress--a gathering of the gray-clad workers of the lower levels of New York. Less than two hundred of their number were in evidence, and these huddled in dejected groups around the pedestal from which a fiery-tongued orator was addressing them. Lounging negligently at the edge of the small crowd were a dozen of the red police. "I tell you, comrades," the speaker was shouting, "the time has come when we must revolt. We must battle to the death with the wearers of the purple. Why work out our lives down here so they can live in the lap of luxury over our heads? Why labor day after day at the oxygen generators to give them the fresh air they breathe?"