He whipped out a command to the terror-stricken girl. She rose from her crouching position on the floor; and at length formulated the Rogan's last order:

"You will explain the working of the engine that drove your s.p.a.ce ship here."

Dex laughed. It was a short bark of sound, totally devoid of humor, but very full of defiance. Brand thrust his hands into the pockets of his tunic, spread his legs apart, and began to whistle.

A quiver that might have been of anger touched the Rogan leader's repulsive little mouth. He glared balefully at the uncowed Earthmen and spoke again, evidently repeating his command. The two turned their backs to him to indicate their refusal to obey.

At that, the tall leader pointed to Dex. In an instant three of the guards had wound their double pairs of arms around his struggling body. Brand sprang to help him, but a touch of the mysterious discharge from the leader's tube sent him writhing to the floor.

"It's no use, Brand," said Dex steadily. He too had stopped struggling, and now stood quietly in the slimy coils of his captors'

arms. "I might as well go along with them and get it over with. I probably won't see you again. Good luck!"

He was borne out of the room. The Rogan leader turned to Brand and spoke.

"He says that if your comrade does not tell him what he wants to know, your turn will come next," sobbed Greca. "Oh! Why does not The Great White One strike these monsters to the dust!"

She ran to Brand and pressed her satiny cheek to his. Then she was dragged roughly away.

The great door clanged shut. The heavy outer fastenings clicked into place. Dex had gone to experience whatever it was that Journeyman and the rest had experienced in this red h.e.l.l. And Brand was left behind to reflect on what dread torments this might comprise; and to pray desperately that no matter what might be done to his shrinking body he would be strong enough to refuse to betray his planet.

CHAPTER V

_The Torture Chamber_

Swiftly Dex was carried down the long ramp to the ground floor, the arms of his captors gripping him with painful tightness. Heading the procession was the immensely tall, gangling Rogan leader, clutching Greca by the wrist and dragging her indifferently along to be his mouthpiece.

They did not stop at the street level; they continued on down another ramp, around a bend, descending an even steeper incline toward the bowels of Jupiter. Their descent ended at last before a huge metal barrier which, at a signal from the leader, drew smoothly up into the ceiling to disclose a gigantic, red-lit chamber underlying the foundations of the building.

In fear and awe, Dex gazed around that huge room.

It resembled in part a nightmare rearrangement of such a laboratory as might be found on Earth; and in part a torture chamber such as the most ferocious of savages might have devised had they been scientifically equipped to add contrivances of supercivilization to the furthering of their primitive l.u.s.t for cruelty.

There were great benches--head-high to the Earthman--to accommodate the height of the Rogan workmen. There were numberless metal instruments, and gla.s.s coils, and enormous retorts; and in one corner an orange colored flame burnt steadily on a naked metal plate, seeming to have no fuel or other source of being.

There was a long rack of cruelly pointed and twisted instruments.

Under this was a row of long, delicate pincers, with coils on the handles to indicate that they might be heated to fiendish precision of temperatures. There were gleaming metal racks with calibrated slide-rods and spring dials to denote just what pull was being exerted on whatever unhappy creature might be stretched taut on them. There were tiny cones of metal whose warped, baked appearance testified that they were little portable furnaces that could be placed on any desired portion of the anatomy, to slowly bake the selected disk of flesh beneath them.

Dex shuddered; and a low moan came from Greca, whose clear blue eyes had rested on the contents of this vast room before in her capacity as hostage and interpreter for the inhuman Rogans.

And now another sense of Dex's began to register perception on his brain.

A peculiar odor came to his nostrils. It was a musky, fetid odor, like that to be smelled in an animal cage; but it was sharper, more acrid than anything he had ever smelled on Earth. It smelled--ah, he had it!--_reptilian_. As though somewhere nearby a dozen t.i.tanic serpents were coiled ready to spring!

Looking about, Dex saw a six-foot square door of bars in one wall of the laboratory--like the barred entrance to a prison cell. It was from the interstices of this door that the odor seemed to emanate; but he had no chance to make sure, for now the Rogan leader approached him.

"I will first show you," he said, through his mouthpiece, Greca, "what happens to those who oppose our orders. We have a slave who tried to run away into the surrounding jungles three suns ago...."

A man was dragged into the chamber. He was slightly taller and more stockily muscled than an Earthman might be; but otherwise, in facial conformation and general appearance, he might have come here straight from New York City. Dex felt a great pang of sympathy for him. He was so plainly one of humankind, despite the fact that he had been born on a sphere four hundred million miles from Dex's.

The fellow was paralyzed with horror. His eyes, wide and glazed, darted about the torture room like those of a trapped animal. And yet he made no move to break away from the clutch of the two Rogans who held him. He knew he was helpless, that wild-eyed glance told Dex.

Knew it so thoroughly that not even his wildest terror could inspire him to try to make a break for freedom, or strike back at the implacable Rogan will.

At a nod from the leader, the man was stripped to the waist. Here Dex started in amazement. The man's broad chest was seamed and crisscrossed by literally hundreds of tiny lateral scars, some long healed, and some fresh incisions.

He was dragged to a metal plate set upright in the wall, and secured to it by straps of metal. Evidently the miserable being knew what this portended, for he began to scream--a monotonous, high-pitched shriek that didn't stop till he was out of breath.

The Rogan leader stared at him icily, then depressed a small lever set in the wall beside him. The plate against which the captive was bound began to shine softly with a blue light. The slave twisted in his bonds, screaming again. Rhythmic shudders jerked at his limbs. His lips turned greenish white. The shudders grew more p.r.o.nounced till it seemed as though he were afflicted with a sort of horrible St. Vitus dance. Then the tall Rogan pulled back the lever. The slave hung away from his supporting shackles, limp and unconscious.

Dex moistened his lips. An electric shock? No, it was something more terrible than that. Some other manifestation of the magnetic power the Rogans had harnessed--a current, perhaps, that depolarized partly the atoms of the body structure? He could only guess. But the convulsed face of the unfortunate victim showed that the torment, whatever it was, was devilish to the last degree!

"That will be the next to the last fate reserved for you," the Rogan informed Dex, through Greca. "Death follows soon after that--but not too soon for you to see and feel what waits for you behind the barred door!" And he nodded toward the cage-entrance affair, from which came the musky, reptilian stench.

"Now that you have seen something of what will happen to you if you refuse to tell us what we want to know, we shall proceed," said the leader.

He pointed toward one of the gargantuan work benches, and two of the Rogans slid down from it a contrivance that looked familiar to Dex. An instant's scrutiny showed him why it was familiar: it was a partly dismantled atomic motor.

In spite of the ordeal that faced him, Dex felt a thrill of elation as he looked at the motor. In its scattered state, it told a mute story: a story of long and intensive study by the Rogans, which had yielded them no results! Only too obviously, the intricate secret of atomic power had not let itself be solved.

On the heels of the elation that filled his heart, came a sickening realization of his dilemma. He could not have told the Rogans what they wanted to know even if he had wished to! He himself didn't know the principles of the atomic engine. As Brand had remarked, he was no s.p.a.ce navigator; he was simply a prosaic lieutenant, competent only at fighting, not at all versed in science.

He knew, though, that it would do no good to a.s.sert his ignorance to the Rogans. They simply wouldn't believe him.

"You will rebuild this engine for us," ordered the tall leader, "showing us the purpose of each part, and how the power is extracted from the fuel. After that you will set it running for us, and instruct us in its control."

Dex braced himself. His final moment had come.

By way of indicating his refusal he looked away from the dismantled motor and said nothing. The Rogan repeated his command. Dex made no move. Then the leader acted.

He said something to the Rogan guards who had been standing by all this while, alert against an outbreak from their prisoner. Dex was caught up, carried to one of the metal racks, and thrown down on its calibrated bed. Loops of metal, like handcuffs, were snapped around his wrists and ankles; and a metal hoop was clamped over his throat, pinning him to the torture rack. Resistance would have been useless, and Dex submitted quietly.

The contrivance, with him on it, was wheeled toward the barred door.

It was halted at a spot marked on the floor, about thirty feet from the bars. The Rogan leader stepped alongside the rack, with Greca trembling beside him.

Dex closed his eyes for a moment, grimly marshaling strength of will to go through the trial that was just beginning.