VI

Arcot lifted the _Solarite_ at once high into the air, and started

toward the point on the border, where the plane had been seen crossing.

In a short time Wade relieved him at the controls while he dressed.

They had been flying on in silence for about an hour, when suddenly Wade

made out in the distance the great bulk of the plane, against the dull

gray of the clouds, a mile or so above them. It seemed some monstrous

black bat flying there against the sky, but down to the sensitive

microphone on the side of the _Solarite_ came the drone of the hundred

mighty propellers as the great plane forged swiftly along.

Just how rapidly these giants moved, Arcot had not appreciated until he

attempted to overtake this one. It was going over a mile a second now--a

speed that demanded only that it move its own length in about

five-eights of a second! It made this tremendous speed by streamlining

and through sheer power.

The _Solarite_ hovered high above the dark ship at length, the roar of

the terrific air blast from its propellers below coming up to them as a

mighty wave of sound that made their own craft tremble! The hundred

gigantic propellers roaring below, however, would distribute their gas

perfectly.

"We're going invisible," Arcot exclaimed. "Look out!" There was a click

as the switch shut, and the _Solarite_ was as transparent as the air

above it. Arcot drove his ship swiftly, above and ahead of the mighty

colossus, then released the gas. There was a low hiss from the power

room, barely detectable despite the vacuum that shut them off from the

roar of the Kaxorian plane. The microphone had long since been

disconnected. Out of the gas vent streamed a cloud of purplish gas,

becoming faintly visible as it left the influence of the invisibility

apparatus, but only to those who knew where to look for it. The men in

that mighty plane could not see it as their machine bore down into the

little cloud of gas.

Tensely the Terrestrians waited. Moments--and the gigantic plane

wobbled! There was a sudden swerve that ended in a nose dive, straight

toward Venus seven miles below.

That the ship should crash into the ground below was not at all Arcot's

plan, and he was greatly relieved when it flattened its dive and started

to climb, its incalculable mass rapidly absorbing its kinetic energy.

Down from its seven mile height it glided, controlling itself perfectly

as Arcot released the last of the first four containers of the liquid

gas makers, putting to sleep the last man on the ship below.

In a long glide that carried it over many miles, the great ship

descended. It had sunk far, and gone smoothly, but now there loomed

ahead of it a range of low hills! It would certainly crash into the

rocky cliffs ahead! Nearer and nearer drew the barrier while Arcot and

the others watched with rigid attention. It might skim above those low

hills at that--just barely escaping.... The watchers cringed as head on,

at nearly two thousand miles an hour, the machine crashed into the

rocks. Arcot had snapped the loud speaker into the circuit once more,

and now as they looked at the sudden crash below, there thundered up to

them mighty waves of sound!

The giant plane had struck about twenty feet from the top of a nearly

perpendicular cliff. The terrific crash was felt by seismographs in

Sonor nearly two thousand miles away! The mighty armored hull plowed

into the rocks like some gigantic meteor, the hundreds of thousands of

tons crushing the rocky precipice, grinding it to powder, and shaking

the entire hill. The cliff seemed to buckle and crack. In moments the

plane had been brought to rest, but it had plowed through twenty feet of

rock for nearly an eighth of a mile. For an instant it hung motionless,

perched perilously in the air, its tail jutting out over the little

valley, then slowly, majestically it sank, to strike with a

reverberating crash that shattered the heavy armor plate!

For another instant the great motors continued turning, the roar of the

propellers like some throbbing background to the rending crashes as the

titanic wreck came to rest. Suddenly, with a series of roaring

explosions, the bank of motors in the left wing blew up with awful

force. There was a flash of indescribable brilliance that momentarily

blinded the watching Terrestrians; then there came to the microphone

such waves of sound as it could not reproduce. From the rock on which

rested the fused mass of metal that they knew had been the wing, rose a

great cloud of dust. Still the motors on the other side of the ship

continued roaring and the giant propellers turned. As the blast of air

blew the dust away, the Terrestrians stared in unbounded amazement. Up

from the gaping, broken wing lanced a mighty beam of light of such

dazzling intensity that Arcot swiftly restored them to visibility that

they might shut it out. There was a terrific hissing, crackling roar.

The plane seemed to wobble as it lay there, seemingly recoiling from

that flaming column. Where it touched the cliff there was intense

incandescence that made the rock glow white hot, then flow down in a

sluggish rivulet of molten lava! For five minutes longer this terrific

spectacle lasted, while Arcot withdrew the _Solarite_ to a safer

distance.

The fifty motors of the remaining wing seemed slowing down now--then

suddenly there was such a crash and towering flash of light as no human

being had ever seen before! Up--up into the very clouds it shot its

mighty flame, a blazing column of light that seemed to reach out into

space. The _Solarite_ was hurled back end over end, tumbling, falling.

Even the heavy gyroscopes could not hold it for an instant, but quickly

the straining motors brought them to rest in air that whirled and whined

about them. They were more than twenty miles from the scene of the

explosion, but even at that distance they could see the glow of the

incandescent rock. Slowly, cautiously they maneuvered the _Solarite_

back to the spot, and looked down on a sea of seething lava!

Morey broke the awed silence. "Lord--what power that thing carries! No

wonder they could support it in the air! But--how can they control such

power? What titanic forces!"

Slowly Arcot sent the _Solarite_ away into the night--into the kindly

darkness once more. His voice when he spoke at last was oddly

restrained.

"I wonder what those forces were--they are greater than any man has ever

before seen! An entire hill fused to molten, incandescent rock, not to

mention the tons and tons of metal that made up that ship.

"And such awful forces as these are to be released on our Earth!" For an

interminable period they sat silent as the panorama of hills glided by

at a slow two-hundred miles an hour. Abruptly Arcot exclaimed, "We

_must_ capture a ship. We'll try again--we'll either destroy or capture

it--and either way we're ahead!"

* * * * *

Aimlessly they continued their leisurely course across a vast plain.

There were no great mountains on Venus, for this world had known no such

violent upheaval as the making of a moon. The men were lost in thought,

each intent on his own ideas. At length Wade stood up, and walked slowly

back to the power room.

Suddenly the men in the control room heard his call:

"Arcot--quick--the microphone--and rise a mile!"

The _Solarite_ gave a violent lurch as it shot vertically aloft at

tremendous acceleration. Arcot reached over swiftly and snapped the

switch of the microphone. There burst in upon them the familiar roaring

drone of a hundred huge propellers. No slightest hum of motor, only the

vast whining roar of the mighty props.

"Another one! They must have been following the first by a few minutes.

We'll get this one!" Arcot worked swiftly at his switches. "Wade--strap

yourself in the seat where you are--don't take time to come up here."

They followed the same plan which had worked so well before. Suddenly

invisible, the _Solarite_ flashed ahead of the great plane. The titanic

wave of rushing sound engulfed them--then again came the little hiss of

the gas. Now there were no hills in sight, as far as the eye could see.

In the dim light that seemed always to filter through these gray clouds

they could see the distant, level horizon.

Several dragging minutes passed before there was any evident effect; the

men from Earth were waiting for that great ship to waver, to wobble from

its course. Suddenly Arcot gave a cry of surprise. Startled amazement

was written all over his face, as his companions turned in wonderment to

see that he was partially visible! The _Solarite_, too, had become a

misty ghost ship about them; they were becoming visible! Then in an

instant it was gone--and they saw that the huge black bulk behind them

was wavering, turning; the thunderous roar of the propellers fell to a

whistling whine; the ship was losing speed! It dipped, and shot down a

bit--gained speed, then step by step it glided down--down--down to the

surface below. The engines were idling now, the plane running more and

more slowly.

They were near the ground now--and the watchers scarcely breathed. Would

this ship, too, crash? It glided to within a half mile of the

plain--then it dipped once more, and Arcot breathed his relief as it

made a perfect landing, the long series of rollers on the base of the

gigantic hull absorbing the shock of the landing. There were small

streams in the way--a tree or two, but these were obstacles unnoticed by

the gargantuan machine. Its mighty propellers still idling slowly, the

huge plane rolled to a standstill.

Swooping down, the _Solarite_ landed beside it, to be lost in the vast

shadows of the mighty metal walls.

Arcot had left a small radio receiver with Tonlos in Sonor before he

started on this trip, and had given him directions on how to tune in on

the _Solarite_. Now he sent a message to him, telling that the plane had

been brought down, and asking that a squadron of planes be sent at once.

Wade and Arcot were elected to make the first inspection of the Kaxorian

plane, and clad in their cooling suits, they stepped from the

_Solarite_, each carrying, for emergency use, a small hand torch,

burning atomic hydrogen, capable of melting its way through even the

heavy armor of the great plane.

As they stood beside it, looking up at the gigantic wall of metal that

rose sheer beside them hundreds of feet straight up, it seemed

impossible that this mighty thing could fly, that it could be propelled

through the air. In awed silence they gazed at its vast bulk.

Then, like pygmies beside some mighty prehistoric monster, they made

their way along its side, seeking a door. Suddenly Wade stopped short

and exclaimed: "Arcot, this is senseless--we can't do this! The machine

is so big that it'll take us half an hour of steady walking to go around

it. We'll have to use the _Solarite_ to find an entrance!"

It was well that they followed Wade's plan, for the only entrance, as

they later learned, was from the top. There, on the back of the giant,

the _Solarite_ landed--its great weight having no slightest effect on

the Kaxorian craft. They found a trap-door leading down inside. However,

the apparatus for opening it was evidently within the hull, so they had

to burn a hole in the door before they could enter.

What a sight there was for these men of Earth. The low rumble of the

idling engines was barely audible as they descended the long ladder.

There was no resemblance whatever to the interior of a flying machine;

rather, it suggested some great power house, where the energies of half

a nation were generated. They entered directly into a vast hall that

extended for a quarter of a mile back through the great hull, and

completely across the fuselage. To the extreme nose it ran, and

throughout there were scattered little globes that gave off an intense

white light, illuminating all of the interior. Translucent bull's-eyes

obscured the few windows.

All about, among the machines, lay Venerians. Dead they seemed, the

illusion intensified by their strangely blue complexions. The two

Terrestrians knew, however, that they could readily be restored to life.

The great machines they had been operating were humming softly, almost

inaudibly. There were two long rows of them, extending to the end of

the great hall. They suggested mighty generators twenty feet high. From

their tops projected two-feet-thick cylinders of solid fused quartz.

From these extended other rods of fused quartz, rods that led down

through the floor; but these were less bulky, scarcely over eight inches

thick.

The huge generator-like machines were disc-shaped. From these, too, a

quartz rod ran down through the floor. The machines on the further row

were in some way different; those in the front half of the row had the

tubes leading to the floor below, but had no tubes jutting into the

ceiling. Instead, there were many slender rods connected with a vast

switchboard that covered all of one side of the great room. But

everywhere were the great quartz rods, suggesting some complicated water

system. Most of them were painted black, though the main rods leading

from the roof above were as clear as crystal.

Arcot and Wade looked at these gigantic machines in hushed awe. They

seemed impossibly huge; it was inconceivable that all this was but the

power room of an airplane!

Without speaking, they descended to the level below, using a quite

earthly appearing escalator. Despite the motionless figures everywhere,

they felt no fear of their encountering resistance. They knew the

effectiveness of Wade's anesthetic.

The hall they entered was evidently the main room of the plane. It was

as long as the one above, and higher, yet all that vast space was taken

by one single, titanic coil that stretched from wall to wall! Into it,

and from it there led two gigantic columns of fused quartz. That these

were rods, such as those smaller ones above was obvious, but each was

over eight feet thick!

Short they were, for they led from one mighty generator such as they had

seen above, but magnified on a scale inconceivable! At the end of it,

its driving power, its motor, was a great cylindrical case, into which

led a single quartz bar ten inches thick. This bar was alive with

pulsing, glowing fires, that changed and maneuvered and died out over

all its surface and through all its volume. The motor was but five feet

in diameter and a scant seven feet long, yet obviously it was driving

the great machine, for there came from it a constant low hum, a deep

pitched song of awful power. And the huge quartz rod that led from the

titanic coil-cylinder was alive with the same glowing fires that played

through the motor rod. From one side of the generator, ran two objects

that were familiar, copper bus bars. But even these were _three feet

thick_!

The scores of quartz tubes that come down from the floor above joined,

coalesced, and ran down to the great generator, and into it.

They descended to another level. Here were other quartz tubes, but these

led down still further, for this floor contained individual sleeping

bunks, most of them unoccupied, unready for occupancy, though some were

made up.

Down another level; again the bunks, the little individual rooms.

At last they reached the bottom level, and here the great quartz tubes

terminated in a hundred smaller ones, each of these leading into some

strange mechanism. There were sighting devices on it, and there were

ports that opened in the floor. This was evidently the bombing room.

With an occasional hushed word, the Terrestrians walked through what

seemed to be a vast city of the dead, passing sleeping officers, and

crewmen by the hundreds. On the third level they came at last to the

control room. Here were switchboards, control panels, and dozens of

officers, sleeping now, beside their instruments. A sudden dull thudding

sound spun Arcot and Wade around, nerves taut. They relaxed and

exchanged apologetic smiles. An automatic relay had adjusted some

mechanism.

They noted one man stationed apart from the rest. He sat at the very

bow, protected behind eight-inch coronium plates in which were set

masses of fused quartz that were nearly as strong as the metal itself.

These gave him a view in every direction except directly behind him.

Obviously, here was the pilot.

Returning to the top level, they entered the long passages that led out

into the titanic wings. Here, as elsewhere, the ship was brightly

lighted. They came to a small room, another bunk room. There were great

numbers of these down both sides of the long corridor, and along the two

parallel corridors down the wing. In the fourth corridor near the back

edge of the wing, there were bunk rooms on one side, and on the other

were bombing posts.

As they continued walking down the first corridor, they came to a small

room, whence issued the low hum of one of the motors. Entering, they

found the crew sleeping, and the motor idling.

"Good Lord!" Wade exclaimed. "Look at that motor, Arcot! No bigger than

the trunk of a man's body. Yet a battery of these sends the ship along

at a mile a second! What power!"

Slowly they proceeded down the long hall. At each of the fifty engine

mountings they found the same conditions. At the end of the hall there

was an escalator that led one level higher, into the upper wing. Here

they found long rows of the bombing posts and the corresponding quartz

rods.

They returned finally to the control room. Here Arcot spent a long time

looking over the many instruments, the controls, and the piloting

apparatus.

"Wade," he said at last, "I think I can see how this is done. I am going

to stop those engines, start them, then accelerate them till the ship

rolls a bit!" Arcot stepped quickly over to the pilots seat, lifted the

sleeping pilot out, and settled in his place.

"Now, you go over to that board there--that one--and when I ask you to,

please turn on that control--no, the one below--yes--turn it on about

one notch at a time."

Wade shook his head dubiously, a one-sided grin on his face. "All right,

Arcot--just as you say--but when I think of the powers you're playing

with--well, a mistake might be unhealthy!"

"I'm going to stop the motors now," Arcot announced quietly. All the

time they had been on board, they had been aware of the barely inaudible

whine of the motors. Now suddenly, it was gone, and the plane was still

as death!

Arcot's voice sounded unnaturally loud. "I did it without blowing the

ship up after all! Now we're going to try turning the power on!"

Suddenly there was a throaty hum; then quickly it became the low whine;

then, as Arcot turned on the throttle before him, he heard the tens of

thousands of horsepower spring into life--and suddenly the whine was a

low roar--the mighty propellers out there had became a blur--then with

majestic slowness the huge machine moved off across the field!

Arcot shut off the motors and rose with a broad, relieved smile, "Easy!"

he said. They made their way again up through the ship, up through the

room of the tremendous cylinder coil, and then into the power room. Now

the machines were quiet, for the motors were no longer working.

"Arcot, you didn't shut off the biggest machine of all down there. How

come?"

"I couldn't, Wade. It has no shut-off control, and if it did have, I

wouldn't use it. I will tell you why when we get back to the

_Solarite_."

At last they left the mighty machine; walked once more across its broad

metal top. Here and there they now saw the ends of those quartz

cylinders. Once more they entered the _Solarite_, through the air lock,

and took off the cumbersome insulating suits.

As quickly as possible Arcot outlined to the two who had stayed with the

_Solarite_, the things they had seen, and the layout of the great ship.

"I think I can understand the secret of all that power, and it's not so

different from the _Solarite_, at that. It, too, draws its power from

the sun, though in a different way, and it stores it within itself,

which the _Solarite_ does not try to do.

"Light of course, is energy, and therefore, has mass. It exerts

pressure, the impact of its moving units of energy--photons. We have

electrons and protons of matter, and photons of light. Now we know that

the mass of protons and electrons will attract other protons and

electrons, and hold them near--as in a stone, or in a solar system. The

new idea here is that the photons will attract each other ever more and

more powerfully, the closer they get. The Kaxorians have developed a

method of getting them so close together, that they will, for a while at

least, hold themselves there, and with a little 'pressure', will stay

there indefinitely.

"In that huge coil and cylinder we found there we saw the main power

storage tank. That was full of gaseous light-energy held together by its

own attraction, plus a little help of the generator!"

"A little help?" Wade exclaimed. "Quite a little! I'll bet that thing

had a million horsepower in its motor!"

"Yes--but I'll bet they have nearly fifty pounds of light condensed

there--so why worry about a little thing like a million horsepower? They

have plenty more where that comes from.

"I think they go up above the clouds in some way and collect the sun's

energy. Remember that Venus gets twice as much as Earth. They focus it

on those tubes on the roof there, and they, like all quartz tubes,

conduct the light down into the condensers where it is first collected.

Then it is led to the big condenser downstairs, where the final power is

added, and the condensed light is stored.

"Quartz conducts light just as copper conducts electricity--those are

bus bars we saw running around there.

"The bombs we've been meeting recently are, of course, little knots of

this light energy thrown out by that projector mechanism we saw. When

they hit anything, the object absorbs their energy--and is very promptly

volatilized by the heat of the absorption.

"Do you remember that column of hissing radiance we saw shooting out of

the wrecked plane just before it blew up? That was the motor connection,

broken, and discharging free energy. That would ordinarily have

supplied all fifty motors at about full speed. Naturally, when it cut

loose, it was rather violent.

"The main generator had been damaged, no doubt, so it stopped working,

and the gravitational attraction of the photons wasn't enough, without

its influence to hold them bound too long. All those floods of energy

were released instantaneously, of course.

"Look--there come the Lanorians now. I want to go back to Sonor and

think over this problem. Perhaps we can find something that will release

all that energy--though honestly, I doubt it."

Arcot seemed depressed, overawed perhaps, by the sheer magnitude of the

force that lay bound up in the Kaxorian ship. It seemed inconceivable

that the little _Solarite_ could in any way be effective against the

incredible machine.

The Lanorian planes were landing almost like a flock of birds, on the

wings, the fuselage, the ground all about the gigantic ship. Arcot

dropped into a chair, gazing moodily into emptiness, his thoughts on the

mighty giant, stricken now, but only sleeping. In its vast hulk lay such

energies as intelligence had never before controlled; within it he knew

there were locked the powers of the sun itself. What could the

_Solarite_ do against it?

"Oh, I almost forgot to mention it." Arcot spoke slowly, dejectedly. "In

the heat of the attack back there it went practically unnoticed. Our

only weapon beside the gas is useless now. Do you remember how the ship

seemed to lose its invisibility for an instant? I learned why when we

investigated the ship. Those men are physicists of the highest order. We

must realize the terrible forces, both physical and mental that we are

to meet. They've solved the secret of our invisibility, and now they can

neutralize it. They began using it a bit too late this time, but they

had located the radio-produced interference caused by the ship's

invisibility apparatus, and they were sending a beam of interfering

radio energy at us. We are invisible only by reason of the vibration of

the molecules in response to the radio impressed oscillations. The

molecules vibrate in tune, at terrific frequency, and the light can pass

perfectly. What will happen, however, if someone locates the source of

the radio waves? It'll be simple for them to send out a radio beam and

touch our invisible ship with it. The two radio waves impressed on us

now will be out of step and the interference will instantly make us

visible. We can no longer attack them with our atomic hydrogen blast, or

with the gas--both are useless unless we can get close to them, and we

can't come within ten miles of them now. Those bombs of theirs are

effective at that distance."

Again he fell silent, thinking--hoping for an idea that would once more

give them a chance to combat the Kaxorians. His three companions,

equally depressed and without a workable idea, remained silent. Abruptly

Arcot stood up.

"I'm going to speak with the Commander-in-Field here. Then we can start

back for Sonor--and maybe we had better head for home. It looks as

though there is little we can do here."

Briefly he spoke to the young Venerian officer, and told him what he had

learned about the ship. Perhaps they could fly it to Sonor; or it could

be left there undestroyed if he would open a certain control just before

he left. Arcot showed him which one--it would drain out the power of the

great storage tank, throwing it harmlessly against the clouds above. The

Kaxorians might destroy the machine if they wanted to--Arcot felt that

they would not wish to. They would hope, with reason, they might

recapture it! It would be impossible to move that tremendous machine

without the power that its "tank" was intended to hold.