He saw one of the creatures stoop to break off a protruding end of pinkish, nameless substance; the thing seemed to struggle in his hands while he took it to his mouth and munched on it. Even when Spud realized that this living food was vegetation of some sort, he was still sickened with the sight of its being taken alive into the bodies of these Moon-beasts. * * * * * One of the ugly figures raised a black-clawed hand to seize a lever let flush into the wall. It had been concealed. Spud saw the door open; saw the waiting horde troop through, dragging their loaded nets; and he saw the door close silently, while the actuating lever moved back to its former position. And Spud, speaking half aloud, counted slowly to a hundred, then another hundred, as a gage of the time while he waited for those beyond the door to move on. But at the count of two hundred his eager hands were upon the lever, while his eyes were hungry to stare beyond the opening door. They found nothing but emptiness when the door swung wide. Another room of luminous walls; another door in the farther wall. The man moved slowly through the doorway one cautious step at a time and stared about. He found a lever like the others, moved it--and saw the door close silently behind him. Another lever was near the second door; he pulled carefully, steadily, upon it. There was no movement of the door, but something had occurred as he knew by the hissing sound that came from above his head. Its source he could not find; its result was most startling. For, where before his suit had bulged out roundly with the inner pressure of one atmosphere, it now became less taut--and it hung loosely about him when the hissing ceased. "An air-lock," said Spud joyfully, "or I'm a rat-tailed imp myself! That means a heavier air-pressure inside. And now I know 'tis men folks I'm goin' to see!" * * * * * The lever moved easily now, and the second door swung open and closed behind him as before. Spud tore recklessly at the fastening of his suit, regardless of the fact that an increased pressure might still come from some gas that would mean death to a human. But, like Chet, he found the air fragrant and pure, and he rid himself of the encumbering suit, strapped the pistols at his waist, rolled the suit to a bundle he could sling over one shoulder, and moved carefully as a cat as he went forward through a corridor that led down and still down. As he went the empty labyrinth of halls filled him with a horrible depression; yet there was beauty everywhere--beauty whose delicacy of curve and color filled even the untrained mind of Spud O'Malley with a thrill of delight.