At least a dozen men were moving near him, waist deep in the Venusian mud. At his cry, they stopped and stared at him dully, fatalistically. They could easily have formed a chain and pulled him out, but none moved. They'd seen too many repetitions of this tragedy to care anymore. It happened every day; a new man, a little careless, caught in one of the deadly sink holes ... it happened even to the veterans of this Venusian prison camp, sometimes deliberately, as they became weary of a hopeless existence. The mud was almost to Mark's chin now; only his forearms and his blond head were visible. Hatred came into his eyes as he glared at the men about him, most of them Earthmen like himself, who would not help him. Again he struggled, tried to hoist himself upward. "Don't struggle, you fool!" came the resonant voice from behind him. "Be still; every movement helps to sink you!" Then, in an undertone, "No human was ever able to think clearly, anyway." Mark smiled despite his predicament, then he urged: "Hurry Aladdo--hurry!" * * * * * Over the expanse of hellish, green-lit muck, a tiny figure inched toward Mark. Scarcely five feet in height, Aladdo's arms and legs were now outspread, to distribute his weight over as much area as possible. The rescuing figure was like an imp from hades, clad as it was in a tight-fitting garment of metallic blue, which even the clinging mud failed to dull; while membraneous wings of a lighter hue began at its wrists, joined to the entire under-arm and the sides of its body all the way to its feet, much as the wings of a bat. Swiftly it crawled and wriggled toward the Earthman, and without a word grasped him with both tiny hands by the arms. It braced itself on its wings, and heaved. A few inches of Mark Denning emerged from the mud with a sucking sound. Again Aladdo made a prodigious effort, and again the Earthman came up from the mud a few more inches. The winged figure held him there, while it gasped for breath. "Now, spread your arms on the mud and stiffen your neck, sub-species!" The winged one laughed. Swiftly it cupped its seemingly fragile hands under Mark's chin, and slowly but surely began to pull him back and out. Most of an hour went by before the Earthman's superb torso had emerged and was able to help the rescuer. At last he was out of the sink hole, panting, almost exhausted and half nude. He still found strength to feel at his trouser pocket, and was gratified to find his purple Josmian still there. It was now about half its original size, and soon would cease its shrinkage and begin to crystallize.