<h2>CHAPTER X</h2>
<h2><i>The "Tank Scheme"</i></h2>
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<p>hank God you came when you did," repeated Brand. Then, with a moment
in which, figuratively, to get his feet back on earth, the wonder of
Dex's appearance struck him.</p>
<p>"How did you manage to get away?" he asked. "I was sure—I
thought—when they dragged you out of the tower room I wouldn't see
you again—"</p>
<p>Rapidly Dex gave an account of his ordeal in the torture chamber,
telling Brand in a few words how he had attempted to win free of the
Rogans, how he had almost succeeded, only to be caught again and
clamped to the death-plate on the wall.</p>
<p>"But just as the big fellow was about to cook me for good and all," he
concluded, "something happened to the current, and to the gravity at
the same time—"</p>
<p>"That was when I pulled the lever in the dome building!" exclaimed
Brand.</p>
<p>He told of what had befallen him in the Rogan power-house. "That
lever, Dex!" he said swiftly. "It's the keynote of the whole business.
It absolutely controls the pull of gravity, and Lord knows what else
besides. If we could only get at it again! Perhaps we could not only
shut it off so that Jupiter's pull would function again, but also
reverse the process so its gravity would be <i>increased</i>! Think what
that would mean! Every Rogan in the red empire stretched out and
immovable, possibly crushed in by his own weight!"</p>
<p>"It's a wonderful thought," sighed Dex; while Greca's eyes glowed with
a sudden hope for her enslaved race, "but I don't see how we could
ever—"</p>
<p>He stopped; and glanced in alarm down the passage behind them. Greca
and Brand, hearing the same soft noise, whirled to look, too.</p>
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<p>ar down the passage, just sneaking around the bend, was a group of
Rogan guards, each armed with a death-tube.</p>
<p>"Back to the pen!" cried Brand.</p>
<p>He slid the bolt, and jerked the door open. They rushed into the
walled enclosure again, the slamming of the door behind them cutting
off the enraged squeals of the Rogans.</p>
<p>"This isn't going to mean anything but a short delay, I'm afraid,"
said Brand, clenching his fists in an agony of futility. "They'll be
in here in a minute, and get us like trapped rats."</p>
<p>"Not before we get a lot of them," said Dex grimly.</p>
<p>"But that isn't enough, man! We don't want to die, no matter how
decently we do it. We've won free, and stayed free this long; now,
somehow, we've got to reach our ship and get back to Earth to warn
them of the danger that hides here for our planet!"</p>
<p>He strode tensely up and down, smacking his fist into his palm. "The
lever!" he exclaimed. "That lever! It's our only answer! If we could
get to it.... But how can we? We couldn't break into the dome, now the
Rogans are on the watch for us, with anything less than a charge of
explosives. Or a tank. God, how I'd like to have an old-fashioned,
fifty-ton army tank here now!"</p>
<p>Greca exclaimed aloud as Brand's fleeting mental picture of one of
Earth's unwieldy, long-discarded war tanks registered on her brain.</p>
<p>"There is the great beast there," she said hesitantly, pointing a slim
forefinger at the huge lizard that had backed into a far corner and
was regarding them out of dull, savage eyes. Then she shook her head.
"But that is impossible. Impossible!"</p>
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<p>he men stared at her, with dawning realization in their minds. Then
they gazed at each other.</p>
<p>"Of course," said Brand. "Of course! Greca, you're marvelous! Wish we
had a tank? Why, we've got one! A four-legged mountain of meat that
ought to be able to plow through the side of that dome like a
battering ram through cardboard!"</p>
<p>"But it's not possible," replied Greca, her head dropping dejectedly.
"My people, as driven slaves, till the fields with great animals that
were trapped in the surrounding jungles. They harness other great
animals to haul burdens. But none of the beasts are like <i>this</i> one.
This kind cannot be tamed or harnessed. It is too ferocious. It is
used only as a scourge of fear, to crush us into complete submission."</p>
<p>"Can't be tamed?" Brand said. "We'll see about that! Come on, Dex."</p>
<p>"Just a minute," said Dex. He flattened against the wall, motioning
them to do the same. Then he leveled his tube at the door.</p>
<p>Slowly, cautiously, the door began to swing back; and the Rogan that
Dex had heard fumbling with the bolt stuck his huge head out to locate
the escaped prisoners.</p>
<p>Dex pressed the release coil of his tube. Without a sound, the Rogan
slumped to the ground, a smoking cavity in its shoulders at the spot
where its head had been set. In an instant the body, too, disappeared;
an upward coiling wisp of black smoke marking its vanishing.</p>
<p>Another Rogan, tiptoeing out, met the same fate; and another. And then
the door was banged shut again, and the bolt ground into place on the
inside.</p>
<p>"That'll teach 'em to be careful how they try to rush us from <i>that</i>
door," said Dex, through set teeth. "Now let's see if that tank scheme
of ours can be worked."</p>
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<p>e picked up a tube dropped by one of the Rogans, and handed it to
Brand; showing him which coil to press to get full force, as Greca had
in turn informed him.</p>
<p>"Down the field," commanded Brand. "We'll go about thirty yards apart,
and try to herd this brute back through the walls of the dome
building. Once it's inside, we'll try to rush to the lever before the
Rogans can down us, and jam the thing past its terminal peg and into
reverse action. I don't know that there <i>is</i> a reverse to it—but we
can try.</p>
<p>"Greca dear,"—the girl started at the warmth of his thought, and a
faint pink rose to her pale cheeks—"you'd better stay by my side.
Your place as hostage-priestess of your people wouldn't save you if
those devils catch you now. Besides, you can keep your tube leveled at
the doorway as we go, and discourage any Rogans who might pluck up
courage to try coming out again."</p>
<p>They started down the field toward the nightmare thing that snarled
and hissed in its corner. On one side of the big enclosure walked
Brand, with Greca close beside him, glancing continuously over her
shoulder at the rear door, and holding her tube in readiness to check
any charge the Rogans might attempt to make from the tower building.
On the other side, keeping an equal pace, advanced Dex.</p>
<p>With tubes of death as whips, and with death for themselves set as the
stake for which they gambled, they went about their attempt to drive
the brainless monster before them through the solid wall of the dome
building. And there followed what was probably the strangest animal
act the universe has ever witnessed.</p>
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<p>he first thing to do was to rout the enormous lizard out of the
corner where sullen fear had sent it squatting. Dex contrived to do
that by standing next to the wall at its side, and sending a searing
ray that just touched the scaly, tremendously thick hide. The monster
bellowed deafeningly, and, with a spot smoking on its flank, waddled
sideways to the center of the field. Its head and swaying long neck
faced the Earthmen and its back was against the wall of the dome
building. To that extent, at least, they had the creature placed; but
they soon found that the struggle had only just begun.</p>
<p>Brand got far enough around to focus his tube on the tip of the huge
tail, in an effort to swing the gigantic thing about. There was an
unearthly shriek from the colossal beast, and a foot and a half of its
tail disappeared.</p>
<p>"Careful," called Dex, his jaw set and grim as the monster lashed out
in its wrath. "If you bore in too long with that tube there'll be
nothing left of our tank but a cloud of smoke."</p>
<p>Brand nodded, wordlessly, walking on the balls of his feet like a
boxer, holding himself ready to swerve the thing should it charge
them. Which—next instant—it did!</p>
<p>With a whistling bellow it gathered its tons of weight and thundered
with incredible quickness at the gnats that were stinging its flanks
and tail.</p>
<p>Desperately Brand played the tube across the vast chest, scoring a
smouldering gash in the scale-covered flesh just above the gash Dex
had seared a few moments before.</p>
<p>"Sorry, old fellow," Brand muttered to the screaming beast. "We hate
to bait you like this, but it has to be done. Come on, now, through
that wall behind you, and give us a chance at the lever."</p>
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<p>ut through the wall behind it the vast creature, not unnaturally,
refused to go! It darted from side to side. Backward and forward. Up
to the wall, only to back bewilderedly away from it. And constantly
the tubes flicked their blistering, maddening rays along its monstrous
sides and tail, as the Earthmen tried to guide it into the wall.</p>
<p>"Hope there's enough left of it to do the trick," said Brand,
white-lipped. The monster was smoking in a dozen spots now, and
several of the hump-like scales on its back had been burned away till
the vast spine looked like a giant saw that was missing a third of its
teeth. "God, I'm thinking we'll kill it before we can drive it through
that wall!"</p>
<p>Greca nodded soberly, keeping her eyes on the distant door to their
rear. Twice that door had been opened, and twice she had directed the
death rays into its opening to mow down the gangling figures behind
it. But she had said nothing of this to her man. He was busy enough
with his own task!</p>
<p>"The door to the dome—" Dex shouted suddenly.</p>
<p>But Brand merely nodded, even as a discharge from his tube annihilated
the Rogan that had appeared in the doorway before them. He had seen
that door stealthily opening even before Dex had.</p>
<p>"It had better be soon, Dex!" he called. "Rogans in front of
us—Rogans behind us—and—look out! On your side of the fence,
there!"</p>
<p>Dex whirled in time to pick off a grotesque, pipe-like figure that had
suddenly appeared on the broad wall of the enclosure. Then he turned
to the frenzied problem of driving the monster through the building
wall.</p>
<p>"The thing's going mad, Brand!" he cried, his voice high-pitched and
brittle. "Watch out!"</p>
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<p>t was only too evident that his statement was true. The baited
monster, harried blindly this way and that, hounded against the blank
wall behind it by something that bit chunks of living flesh out of its
legs and sides, was losing whatever instinctive mental balance it had
ever had. Its dimly functioning brain, probably no larger than a
walnut in that gigantic skull, ceased more and more to guide it.</p>
<p>With a rasping scream that set the Earthmen's teeth on edge, it
charged for the wall on Dex's side. Dex just managed to swerve it with
a blast from the tube so prolonged that half its great lower jaw fell
away.</p>
<p>At this the titanic thing went wholly, colossally mad! It whirled
toward Brand, jerking around again as a searing on that side jarred
its dull sensory nerves, then headed at last straight toward the stone
wall of the dome building.</p>
<p>With the rays from both tubes flicking it like monstrous spurs, it
charged insanely toward the bulge of the circular wall. With all its
tons and tons of weight it crashed against the stonework. There was a
thunderous crackling noise, and the wall sagged in perceptibly, while
the metal roof bent to accommodate the new curvature of its supporting
beams.</p>
<p>The monstrous lizard, jerked off its huge legs by the impact,
staggered up and retreated toward the two men. But again the maddening
pain in its hindquarters sent it careening toward the building wall.
This time it raised high up on its hind legs in a blind effort to
climb over it. "God, it must be five stories tall!" ejaculated Brand.
Thunderingly its forelegs came down on the edge of the roof.</p>
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<p>here was another deafening crash of stone and shrieking of torn
metal. Just under the cornice, the wall sagged away from the roof and
the top rows of heavy stone blocks slithered inward.</p>
<p>"Again!" shouted Brand.</p>
<p>His tube was pointing almost continuously now at the metal door
leading from the dome building. The Rogans inside, at the shocks that
were battering down a section of their great building, were all trying
to get out to the yard at once. In a stream they rushed for the
doorway. And in loathsome heaps they fell at the impact of the ray
and shriveled to nothingness on the bombarded threshold.</p>
<p>"Once more—" Brand repeated, his voice hoarse and tense.</p>
<p>And as though the monster heard and understood, it rushed again with
all its vast weight and force against the wall in a mad effort to
escape the things that were blasting the living flesh from its
colossal framework.</p>
<p>This charge was the last. With a roaring crash a section of the
building thirty yards across went back and down, leaving the massive
roof to sag threateningly on its battered truss-work.</p>
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<p>t was as though the side of an ant-heap had been ripped away. Inside
the domed building hundreds of Rogans ran this way and that on their
elongated legs, squealing in their staccato, high-pitched tongue.</p>
<p>With blind fury the mad monster charged in through the gaping hole it
had battered for itself. In all directions the Rogans scattered. Then
an authoritative tall figure with a tube in each of its four
sucker-disks, whipped out a command and pointed to the great coils
which lay immediately in the berserk monster's path.</p>
<p>The command restored some sort of order. Losing their fear of the
beast in their greater fear of the damage it might do, the Rogans
massed to stop it before it could demolish the Rogan heart of power.</p>
<p>At this point Brand saw an opening of the kind he had been praying
for. The Rogans had retreated before the terrific charge of the
monster in such a way that the space between its vast bulk and the
control board was clear.</p>
<p>"After me!" he shouted to Dex. "One of us has got to reach that lever
while the creature's still there to shield us!"</p>
<p>The two Earthmen dashed through the jagged hole in the wall and raced
to the control board just as the huge lizard, a smoking mass, sank to
the floor. Brand gazed almost fearfully at the lever-slot.</p>
<p>Was there a reverse to the gravity-control action? There was room in
the slot for the lever to be pulled down below the neutral point, if
that meant anything....</p>
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<p>ehind them the great bulk of the dead lizard was disappearing with
incredible quickness under the rays of the tubes directed on it. Now
the pumpkin-shaped heads on the opposite side were visible through a
fleeting glimpse of a skeleton that was like the framework of a
skyscraper. And now the colossal bones themselves were melting, while
over everything hung a pall of greasy black smoke.</p>
<p>"Hurry, for God's sake!" gasped Dex.</p>
<p>Brand threw down the lever till it stuck. At once that invisible ocean
poured crushingly over them, throwing them to their knees and sweeping
the Rogans flat on their hideous faces just as half a hundred tubes
were flashing down to point at the Earthmen.</p>
<p>"More—if you can!" grated Dex, whirling this way and that and
spraying the massed Rogans with his death-dealing tube. Dozens went up
in smoke under that discharge; but other dozens remained to raise
themselves laboriously and slowly level their suddenly ponderous
weapons at the Earthmen.</p>
<p>Brand set his jaw and threw all his weight on the lever. It bent a
little, caught at the neutral point—and then jammed down an
appreciable distance beyond it.</p>
<hr style="width: 45%;" />
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<p>nstantly the blue streamers, that had stopped their humming progress
from coil to coil with the movement of the switch to neutral, started
again in reversed direction. And instantly the invisible ocean pressed
down with appalling, devastating force.</p>
<p>Greca and Brand and Dex were flattened to the floor as if by blankets
of lead. And the scattered Rogans about them ceased all movement
whatever.</p>
<p>"Oh," sobbed Greca, fighting for breath. "Oh!"</p>
<p>"We can't stand this," panted Dex. "We've fixed the Rogans, all right.
But we've fixed ourselves, too! That lever has to go up a bit."</p>
<p>Brand nodded, finding his head almost too heavy for his neck to move.
Sweat beaded his forehead—sweat that trickled heavily off his face
like drops of liquid metal.</p>
<p>With a tremendous struggle he got to his knees beneath the
master-switch. There he found it impossible to raise his arms; but,
leaning back against the control board and so getting a little
support, he contrived to lift his body up enough to touch the
down-slanting lever with his head and move it back along its slot a
fraction of an inch. The giant coils hummed a note lower; and some of
the smashing weight was relieved.</p>
<p>"That does it, I think," Brand panted, his voice husky with exhaustion
and triumph.</p>
<p>He began to crawl laboriously toward the nearest street exit. "On our
way!" he said vibrantly. "To the space ship! We leave for Earth at
once!"</p>
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<p>lowly, fighting the sagging weight of their bodies, the two Earthmen
inched their way to the street, helping Greca as they went. Among the
sprawled forms of the Rogans they crept, with great dull eyes rolling
helplessly to observe their progress, and with feeble squeals of rage
and fear and malediction following their slow path.</p>
<p>On the street a strange and terrible sight met their eyes.</p>
<p>Strewn over the metal paving like wheat stalks crushed flat by a
hurricane, were thousands of Rogans. Not a muscle of their pipe-like
arms or legs could they move. But the gravity that crushed them
rigidly to the ground did not quite hold motionless the shorter and
more sturdily built slaves.</p>
<p>Among the thousands of squealing, panting Rogans that lay as though
paralyzed on the metal paving, crawled equal thousands of Greca's
enslaved people. Their eyes flamed with fanatic hate. And
methodically—not knowing what had caused their loathed masters to be
stricken helpless, and not caring as long as they <i>were</i> helpless—the
slaves were seeking out the shock-tubes that here and there had fallen
from the clutch of Rogan guards. Already many had found them; and
everywhere gangling, slimy bodies were melting in oily black smoke
that almost instantly vanished in thin air.</p>
<p>As it was in these streets and in the great square in the center of
which rested the Earthmen's ship, just so, they knew, was it being
repeated all over the red empire. Slowly crawling, fiercely exulting
slaves were exterminating the tyrannous things that had held them so
long in dreadful bondage! Before the sun should set on another
flashing Jovian day there would be no Rogan left in the red spot.</p>
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<p>nd so it ends," said Brand with a great sigh. He moved over beside
Greca, and touched her lovely bare shoulders. They were shaking
convulsively, those shoulders; and she had buried her face in her
hands to keep from gazing at the ghastly carnage.</p>
<p>Brand pressed her to him. "It's terrible—yes. But think what it
means! The knell of all the Rogans been sounded to-day. As soon as
the secret of these death-tubes has been analyzed by our science and
provided against, my friend and I will return from Earth with a force
that shall clear the universe of the slimy devils. Meanwhile, your
people are safe here; with the gravity what it is, no Rogan attacking
hordes can land."</p>
<p>They crawled tortuously over the square to the space ship. Brand
turned again to Greca; and now in his eyes was a look that needed no
language of mind or tongue for its complete expression.</p>
<p>"Will you come to Earth with me, Greca, and stay by my side till we
return to set your people in power again?"</p>
<p>Greca shook her head, slowly, reluctantly. "My people need leaders
now. I must stay and help direct them in their new freedom. But
you—you'll come back with the others from Earth?"</p>
<p>"Try and stop him!" grinned Dex. "And try and stop me, too! From what
I know now of the way they grow 'em on your satellite"—his eyes
rested on Greca's beauty with an admiration that turned her to rosy
confusion—"I'd say I'd found the ideal spot to settle down in!"</p>
<p>Brand laughed. "He's answered for me too. And now, a salute that is
used on Earth to express a promise...." He kissed her—to her utter
astonishment and perplexity, but to her dawning pleasure. "Good-by for
a little while."</p>
<p>The two Earthmen hoisted themselves heavily over the sill of the
control room of their ship, and crawled inside.</p>
<p>They secured the trap-door, and turned on the air-rectifiers. Brand
moved to the controls, waved to Greca, who was smiling at him through
the glass panel, and pointed the ship on its triumphant, four hundred
million mile journey home.</p>
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