He saw other floating eggs whose membraneous coverings had turned leathery and opaque. And he saw white phantom figures who gathered those eggs. One came near till Chet could make out the repulsive face and black, staring eyes with their fiery red center. It was one of the things that had captured him; he saw it move swiftly on broad wings. It held a leathery egg in its curled-claw hands while its long tail whipped around and laid the egg open with one slash of a sharp spiked point. One more of the young of this horrible species was liberated and went winging away into the dark, only the whirls of light in the atmosphere marking the beating of its wings. Chet's eyes followed it to see far out beyond a light that expanded as it drew near. The beaten atmospheric gas was whipped to cold flame where some ten or a dozen phantom demons came swiftly on toward the waiting humans. They were swarming about in an instant. Chet had no time for even a shouted warning before he felt himself seized by their long, bony claws. Then a net of rough-fibered rope was flung about him, and he felt it draw tight as the winged beasts lifted him up and out into the void. "Wrong again!" Chet told himself ruefully. "We don't die at the center of the Moon, after all!" But, as the whipping wings drove whirling blasts of violet light back upon him he could find nothing of comfort in the thought that some different experience still lay ahead. CHAPTER VII _The Gateway to Hell_ Spud O'Malley, at the controls of the ship, held the craft in a vertical lift while his eyes clung in horrible fascination to the mirrors that showed from a lower lookout the volcanic floor falling away. Amazement had almost stifled his breathing, until at last he let go a long breath that ended in a curse. "The outrageous, damned things!" he breathed. "Jumping, they were, and leaping, and flying on their leather wings like a lot of black bats out o' hell! And I'm thinkin' that's where they've taken Chet Bullard, and never again will he hold a ship like 'twas in the hollow of his hand, and him settin' it down like a feather! "And: 'Fly back home!' he says to me. I can do it, too; thanks to his teachin'. But fly back and leave that bhoy in the hands of those murderin' devils!--'tis little he knows the Irish!" He was talking half under his breath, murmuring to himself as if it helped him to see clearly the situation that must be faced. "But to get to him--that's the trouble. I saw a big door go shut in that stone floor. They're cunnin', clever beasts; I'll say that for 'em. And there was a raft of 'em; and plenty more down in hell where they live, I've no doubt." He moved forward on the ball-control, and the great ship swept like a silvery shadow through the night toward the distant, lighted crater rim. This he could see clearly, but the other side of the ring of mountains was black with shadow.