The green men! As if the words were a signal, a dreadful thing happened. Out of a far shadow leaped a lean and hideous monster. To Miles' startled eyes it seemed to grow as it leaped. Thin, unbelievably thin it was, yet swelling at the head. From between two goggle-eyes writhed a rope-like trunk. Twelve feet in the air its head towered over Zoro. "Look out!" screamed the American.

Zoro's chair seemed to jump. Too late! Around the tubular container wrapped the snake-like trunk, plucking the wheelchair and its occupant from the floor and dangling them high in air. "Shoot!" cried Zoro.

Miles shot. His bullet ploughed through the unbelievably thin body and ricochetted from a pillar beyond. Ward fired with better effect. One of the goggle eyes spattered like glass. Under a fusillade of bullets the monster wilted, giving expression to a weird, shrill cry. Zoro dangled head downwards. To drop from such a height on his skull would probably be fatal.

But the monster did not drop him. Instead, in its death agony, its grip tightened, and the Americans witnessed an incredible sight. Before their very eyes the monster began rapidly to shrink. Its tenuous body telescoped together, becoming thinner and thinner in the process, until on the floor there lay the lifeless body of a snake-like creature not more than six inches in length!

"Good Lord!" breathed Miles.

Zoro who had escaped unscathed from his perilous plight, regarded it with his peculiarly colored eyes.


"It is a tah-a-la," he said, "and must have entered the room at the same time you did. The green men often capture and train them for hunting. When about to seize their prey their bodies have the power of enormously stretching." Outwardly he seemed unaffected by the danger safely passed and waved away several of his fellows who had wheeled to the spot attracted by the noise of the pistols. The Americans were more shaken. "Perhaps," said Ward, "there is danger of—"

"None," replied Zoro. "I know there are no other tah-a-las inside these rooms, since it is the nature of these beasts to rush to each other's aid when they scream. And as for outside attacks, the laboratories are insulated against any the insurgent workers can make. Their weapons are poor—the green men use but clubs. No, it is not their attacks we fear but their refusal to furnish us with supplies. They worshipped us as gods, and the giving of supplies was long a religious rite. But now they doubt our divinity, and, since they no longer listen to or obey our decrees, we have no means of punishing them. Spiro is responsible for this."

"Spiro?" questioned the two men.