Islands of Space

The Ancient Mariner hung high in the air, poised twenty-five miles above the surface of the little lake. Wade, as chemist, tested the air while the others readied the distillation and air condensation apparatus. By the time they had finished, Wade was ready with his report.

"Air pressure about 20 psi at the surface; temperature around ninety-five Fahrenheit. Composition: eighteen percent oxygen, seventy-five percent nitrogen, four-tenths of one percent carbon dioxide, residue—inert gasses. That's not including water vapor, of which there is a fair amount.

"I put a canary into the air, and the bird liked it, so I imagine it's quite safe except for bacteria, perhaps. Naturally, at this altitude the air is germ-free."

"Good," said Morey, "then we can take our swim and work without worrying about spacesuits."

"Just a minute!" Fuller objected. "What about those germs Wade mentioned? If you think I'm going out in my shorts where some flock of bacteria can get at my tender anatomy, you've got another think coming!"

"I wouldn't worry about it," Wade said. "The chances of organisms developing along the same evolutionary line is quite slim. We may find the inhabitants of the same shape as those of another world, because the human body is fairly well constructed anatomically. The head is in a place where it will be able to see over a wide area and it's in a safe place. The hand is very useful and can be improved upon but little. True, the Venerians have a second thumb, but the principle is the same.

"Even on Earth, evolution has produced such widely varying types of life that an organism that can feed on one is totally incapable of feeding on another. You, for instance, couldn't catch tobacco mosaic virus, and the tobacco plant can't catch the measles virus.

"You couldn't expect a microorganism to evolve here that was capable of feeding on Earth-type tissues; they would have starved to death long ago."

"What about bigger animals?" Fuller asked cautiously.

"That's different. You would probably be indigestible to an alien carnivore, but he'd probably kill you first to find out. If he ate you, it might kill him in the end, but that would be small consolation. That's why we're going to go out armed."

Arcot dropped the ship swiftly until they were hovering a bare hundred feet over the waters of the lake. There was a little stream winding its way down the mountainside, and another which led the clear overflow away.

"I doubt if there's anything of great size in that lake," Arcot said slowly and thoughtfully. "Still, even small fish might be deadly. Let's play safe and remove all forms of life, bacterial and otherwise. A little touch of the molecular motion ray, greatly diffused, will do the trick."

Since the molecular ray directed the motion of the molecules of matter, it prevented chemical reactions from taking place, even when greatly diffused; all the molecules tend to go in the same direction to such an extent that the delicate balance of chemical reactions that is life is upset. It is too delicate a thing to stand any power that upsets the reactions so violently. All things are killed instantly.

Arcot turned the ship, and the shining hull glided softly over to one side of the lake where a little sandy beach invited them. There seemed no indication of intelligent life about.

Each of them took a load of the supplies they had brought, and carried them out under the shade of an immense pine-like tree—a gigantic column of wood that stretched far into the sky to lose its green leaves in a waving sea of foliage. The mottled sunlight of the bright star above them made them feel very much at home. Its color, intensity, and warmth were all exactly the same as on Earth.

Each of the men wore his power suit to aid in carrying the things they had brought, for the gravity here was a bit higher than that of Earth. The difference in air pressure was so little as to be scarcely noticeable; they even adjusted the interior of the ship to it.

They had every intention of staying here for awhile. It was pleasant to lie in the warm sun once more; so pleasant that it became difficult to remember that they were countless trillions of long miles from their own home planet. It was hard to realize that the warm, blazing star above them was not Old Sol.

Arcot was carrying a load of food in a box. He had neutralized his weight until, load and all, he weighed about a hundred pounds. This was necessary in order to permit him to drag a length of hose behind him toward the water, so it could be used as an intake for the pumps.

Morey, meanwhile, was having trouble. He had been carrying a load of assorted things to use—a few pneumatic pillows, a heavy iron pot for boiling the water, and a number of other things.

Morey shot up into the air, showing a fair rate of progress toward his late abode—space! And he had no way to stop himself. His hand power unit was far too weak to overcome the pull of his power-pack, and he was rising faster and faster!

He realized that his friends could catch him, and laughingly called down: "Arcot! Help! I'm being kidnapped by my power suit! To the rescue!"

Arcot looked up quickly at Morey's call and realized immediately that his power control had come off. He knew there was twenty miles or so of breathable air above, and long before Morey rose that far, he could catch him in the Ancient Mariner, if necessary.

He turned on his own power suit, using a lift of a hundred pounds, which gave him double Morey's acceleration. Quickly he gathered speed that shot him up toward his helpless friend, and a moment later, he had caught up with him and passed him. Then he shut off his power and drifted to a halt before he began to drop again. As Morey rose toward him, Arcot adjusted the power in his own suit to match Morey's velocity.

Arcot grabbed Morey's leg and turned his power down until he had a weight of fifty pounds. Soon they were both falling again, and when their rate of fall amounted to approximately twenty miles per hour, Arcot cut their weight to zero and they continued down through their momentum. Just short of the ground, he leaped free of Morey, who, carried on by momentum, touched the ground a moment later. Wade at once jumped in and held him down.

"Now, now! Calm yourself," said Wade solicitously. "Don't go up in the air like that over the least little thing."

"You'd better hold your horses there," said Arcot. "If you take that off now, we sure will need the Ancient Mariner to catch up with it. It will produce an acceleration that no man could ever stand—something on the order of five thousand gravities, if the tubes could stand it. And since that one is equipped with the invisibility apparatus, you'd be out one good invisibility suit. Restrain yourself, boy, and I'll go get a new knob control.

"Wade, get the boy a rock to hold him down. Better tie it around his neck so he won't forget it and fly off into space again. It's a nuisance locating so small an object in space and I promised his father I'd bring the body back if there was anything left of it." He released Morey as Wade handed him a large stone.

A few minutes later, he returned with a new adjustment dial and repaired Morey's apparatus. The strain was released when he turned it, and Morey parted with the rock with relief.

Morey grunted in relief, and looked at the offending pack.

"You know, that being stuck with a sky-bound gadget that you can't turn off is the nastiest combination of feeling stupid, helpless, comical, silly and scared I've hit yet. It now—somewhat late—occurs to me that this is powered with a standard power coil, straight off the production line, and that it has a standard overload cut-out for protection of associated equipment. I want to install an emergency cutoff switch, in case a knob, or something else, goes sour. But I want to have the emergency overload where I can decide whether or not an emergency overload is to be accepted. I'd feel a sight more than silly if that overload relay popped while I was a couple thousand feet up.

"Trouble with all this new stuff of ours is that we simply haven't had time to find out all the 'I never thought of that' things that can go wrong. If the grid resistor on that oscillator went out, for instance, what would it do?"

"That's what it says in all the books." Wade nodded wisely. "And you should see the stock of replacement units every electronics shop stocks for purposes of replacing infallible units, too. You've got a point, my friend."

"I can see four ways we can change these things to fail-safe operation, if we add Morey's emergency cut-off switch. If it did go on-full then, you could use intermittent operation and get down," Arcot acknowledged.

"Anybody know what silly fail-unsafe tricks we overlooked in the Ancient Mariner?" Fuller asked.

"That," said Wade with a grimace, "is a silly question. The 'I didn't think of that' type of failure occurs because I didn't think of that, and the reason I didn't think of it is because it never occurred to me. If we'd been able to think of 'em, we would have. We'll probably get stuck with a few more yet, before we get back. But at least we can clean up a few bugs in these things now."

"Forget it for now, Wade, and get that chow on," suggested Fuller. He was lying on his back, clad only in a pair of short trunks, completely relaxed and enjoying life. "We can do that when it's dark here."

"Fuller has the right idea," said Morey, looking at Fuller with a judicious eye. "I think I'll follow his example."

"Which makes three in favor and one on the way," said Arcot, as he came out of the ship and sank down on the soft sand of the beach.

They lay around for a while after lunch, and then decided to swim in the cool waters of the lake. One of them was to stand guard while the others went in swimming. Standing guard consisted of lying on his back on the soft sand, and staring up at the delightful contrast of lush green foliage and deep blue sky.

They gathered again in the control room. All the apparatus had been taken in; the tanks were filled, and the compressed oxygen replenished. They closed the airlock and were ready to start again.

As they lifted into the air, Arcot looked at the lake that was shrinking below them. "Nice place for a picnic; we'll have to remember that place. It isn't more than twenty million light years from home."

"Yes," agreed Morey, "it is handy. But suppose we find out where home is first; let's go find the local inhabitants."

"Excellent idea. Which way do we go to look?" Wade asked.

"This lake must have an outlet to the sea," Morey answered. "I suggest we follow it. Most rivers of any size have a port near the mouth, and a port usually means a city."

"Let's go," said Arcot, swinging the shining ship about and heading smoothly down along the line of the little stream that had its beginning at the lake. They moved on across the mountains and over the green foothills until they came to a broad, rolling plain.

"I wonder if this planet is inhabited," Arcot mused. "None of this land seems to be cultivated."

Morey had been scanning the horizon with a pair of powerful binoculars. "No, the land isn't cultivated, but take a look over there—see that range of little hills over to the right? Take a look." He handed the binoculars to Arcot.

Arcot looked long and quietly. At last he lowered the binoculars and handed them to Wade, who sat next to him.

"It looks like the ruins of a city," Arcot said. "Not the ruins that a storm would make, but the ruins that high explosives would make. I'd say there had been a war and the people who once lived here had been driven off."

"So would I," rejoined Morey. "I wonder if we could find the conquerors?"

"Maybe—unless it was mutual annihilation!"

A few miles farther on, they came to a great natural basin in the pass, a wide, level bowl. And in almost the exact center, they saw a looming mass of buildings—a great city!

"Look!" cried Morey. "I told you it was inhabited!"

Arcot winced. "Yes, but if you shout in my ear like that again, you'll have to write things out for me for ever after." He was just as excited as Morey, nevertheless.

The great mass of the city was shaped like a titanic cone that stood half mile high and was fully a mile and a half in radius. But the remarkable thing about it was the perfect uniformity with which the buildings and every structure seemed to conform to this plan. It seemed as though an invisible, but very tangible line had been drawn in the air.

It was as though a sign had been posted: "Here there shall be buildings. Beyond this line, no structure shall extend, nor any vehicle go!"

The air directly above the city was practically packed with slim, long, needle-like ships of every size—from tiny private ships less than fifteen feet long to giant freighters of six hundred feet and longer. And every one of them conformed to the rule perfectly!

Only around the base of the city there seemed to be a slight deviation. Where the invisible cone should have touched the ground, there was a series of low buildings made of some dark metal, and all about them the ground appeared scarred and churned.

"They certainly seem to have some kind of ray screen over that city," Morey commented. "Just look at that perfect cone effect and those low buildings are undoubtedly the projectors."

Suddenly, a vagrant ray of the brilliant sun reached down through a break in the overcast of clouds and touched the shining hull of the Ancient Mariner with a finger of gold. Instantly, the ship shone like the polished mirror of a heliograph.

Almost immediately, a low sound came from the distant city. It was a pulsing drone that came through the microphone in a weird cadence; a low, beating drone, like some wild music. Louder and stronger it grew, rising in pitch slowly, then it suddenly ended in a burst of rising sound—a terrific whoop of alarm.

As if by magic, every ship in the air above the city shot downward, dropping suddenly out of sight. In seconds, the air was cleared.

"It seems they've spotted us," said Arcot in a voice he tried to make nonchalant.

A fleet of great, long ships was suddenly rising from the neighborhood of the central building, the tallest of the group. They went in a compact wedge formation and shot swiftly down along the wall of the invisible cone until they were directly over the low building nearest the Ancient Mariner. There was a sudden shimmer in the air. In an instant, the ships were through and heading toward the Ancient Mariner at a tremendous rate.

They shot forward with an acceleration that was astonishing to the men in the spaceship. In perfect formation, they darted toward the lone, shining ship from far-off Earth!

The four earthmen watched the fleet of alien ships roar through the air toward them.

"Now how shall we signal them?" asked Morey, also trying to be nonchalant, and failing as badly as Arcot had.

"Don't try the light beam method," cautioned Arcot. The last time they had tried to use a light beam signal was when they first contacted the Nigrans. The Nigrans thought it was some kind of destruction ray. That had started the terrible destructive war of the Black Star.

"Let's just hang here peaceably and see what they do," Arcot suggested.

Motionless, the Ancient Mariner hung before the advancing attack of the great battle fleet. The shining hull was a thing of beauty in the golden sunlight as it waited for the advancing ships.

The alien ships slowed as they approached and spread out in a great fan-shaped crescent.

Suddenly, the Ancient Mariner gave a tremendous leap and hurtled toward them at a terrific speed, under an acceleration so great that Arcot was nearly hurled into unconsciousness. He would have been except for the terrific mass of the ship. To produce that acceleration in so great a mass, a tremendous force was needed, a force that even made the enemy fleet reel under its blow!

But, sudden as it was, Arcot had managed to push the power into reverse, using the force of the molecular drive to counteract the attraction the aliens had brought to bear.

The mighty lux beams withstood the stress, however, and the ship came to a halt, then was swiftly backing away from the alien battle fleet.

"We can give them all they want!" said Arcot grimly. He noticed that Wade and Fuller had been knocked out by the sudden blow, but Morey, though slightly groggy, was still in possession of his senses.

"Let's not," Morey remonstrated. "We may be able to make friends with them, but not if we kill them off."

"Right!" replied Arcot, "but we're going to give them a little demonstration of power!"

The Ancient Mariner leaped suddenly upward with a speed that defied the eyes of the men at the rays of the enemy ships. Then, as they turned to follow the sudden motion of the ship—it was not there!

The Ancient Mariner had vanished!

Morey was startled for an instant as the ship and his companions disappeared around him, then he realized what had happened. Arcot had used the invisibility apparatus!

Arcot turned and raced swiftly far off to one side, behind the strange ships, and hovered over the great cliff that made the edge of the cleft that was the river bed. Then he snapped the ship into full visibility.

Wade and Fuller had recovered by now, and Arcot started barking out orders. "Wade—Fuller—take the molecular ray, Wade, and tear down that cliff—throw it down into the valley. Fuller, turn the heat beams on with all the power you can get and burn that refuse he tears down into a heap of molten lava!

"I'm going to show them what we can do! And, Wade—after Fuller gets it melted down, throw the molten lava high in the air!"

Then the violet ray died, and two rays of blinding brilliance reached out. The rock was suddenly smoking, steaming. Then it became red, dull at first, then brighter and brighter. Suddenly it collapsed into a great pool of white-hot lava, flowing like water under the influence of the beams from the ship.

Again the pale violet of the molecular beams touched the rock—which was now bubbling lava. In an instant, the great mass of flaming incandescent rock was flying like a glowing meteor, up into the air. It shot up with terrific speed, broke up in mid-air, and fell back as a rain of red-hot stone.

The bright rays died out, but the pale fingers of the molecular beams traced across the level ground. As they touched it, the solid soil spouted into the air like some vast fountain, to fall back as frost-covered powder.

The rays that had swung a sun into destruction were at work! What chance had man, or the works of man against such? What mattered a tiny planet when those rays could hurl one mighty sun into another, to blaze up in an awful conflagration that would light up space for a million light years around with a mighty glare of light!

As if by a giant plow, the valley was torn and rent in great streaks by the pale violet rays of the molecular force. Wade tore loose a giant boulder and sent it rocketing into the heavens. It came down with a terrific crash minutes later, to bury itself deep in the soil as it splintered into fragments.

Suddenly the Ancient Mariner was jerked violently again. Evidently undaunted by their display of power, the aliens' rays had gripped the Earthmen's ship again and were drawing it with terrific acceleration. But this time the ship was racing toward the city, caught by the beam of one of the low-built, sturdy buildings that housed the protective ray projectors.

Again Arcot threw on the mighty power units that drove the ship, bracing them against the pull of the beam.

The ship was stationary, quivering under the titanic forces that struggled for it. The enemy fleet raced toward them, trying to come to the aid of the men in the tower.

The pale glow of the molecular beam reached out its ghostly finger and touched the heavy-walled ray projector building. There was a sudden flash of discharging energy, and the tower was hurled high in the air, leaving only a gaping hole in the ground.

Instantly, with the collapse of the beam that held it, the Ancient Mariner shot backward, away from the scene of the battle. Arcot snapped off the drive and turned on the invisibility apparatus. They hung motionless, silent and invisible in the air, awaiting developments.

In close formation, one group of ships blocked the opening in the wall of rays that the removal of one projector building had caused. Three other ships went to investigate the wreck of the building that had fallen a mile away.

The rest of the fleet circled the city, darting around, searching frantically for the invisible enemy, fully aware of the danger of collision. The unnerving tension of expecting it every second made them erratic and nervous to the nth degree.

"They're sticking pretty close to home," said Arcot. "They don't seem to be too anxious to play with us."

"They don't, do they?" Morey said, looking angry. "They might at least have been willing to see what we wanted. I want to investigate some other cities. Come on!" He had thoroughly enjoyed the rest at the little mountain lake, and he was disappointed that they had been driven away. Had they wanted to, he knew, they could easily have torn the entire city out by the roots!

"I think we ought to smash them thoroughly," said Wade. "They're certainly inhospitable people!"

"And I, for one, would like to know what that attraction ray was," said Fuller curiously.

"Luckily, most of our apparatus is shielded against magnetism. The few things that aren't can be repaired easily. But I'll bet Wade finds his gear in the galley thrown around quite a bit."

"Where do we go from here, then?" Wade asked.

"Well, this world is bigger than Earth," said Morey. "Even if they're afraid to go out of their cities to run farms, they must have other cities. The thing that puzzles me, though, is how they do it—I don't see how they can possibly raise enough food for a city in the area they have available!"

"'People couldn't possibly live in hydrogen instead of oxygen'," Arcot quoted, grinning. "That's what they told me when I made my little announcement at the meeting on the Black Star situation. The only trouble was—they did. That suggestion of yours meets the same fate, Morey!"

"All right, you win," agreed Morey. "Now let's see if we can find the other nations on this world more friendly."

Arcot looked at the sun. "We're now well north of the equator. We'll go up where the air is thin, put on some speed, and go into the south temperate zone. We'll see if we can't find some people there who are more peaceably inclined."

Arcot cut off the invisibility tubes. Instantly, all the enemy ships in the neighborhood turned and darted toward them at top speed. But the shining Ancient Mariner darted into the deep blue vault of the sky, and a moment later was lost to their view.

"They had a lot of courage," said Arcot, looking down at the city as it sank out of sight. "It doesn't take one-quarter as much courage to fight a known enemy, no matter how deadly, as it does to fight an unknown enemy force—something that can tear down mountains and throw their forts into the air like toys."

They were high above the ground now, accelerating with a force of one gravity. Arcot cut the acceleration down until there was just enough to overcome the air resistance, which, at the height they were flying, was very low. The sky was black above them, and the stars were showing around the blazing sun. They were unfamiliar stars in unfamiliar constellations—the stars of another universe.

In a very short time, the ship was dropping rapidly downward again, the horizontal power off. The air resistance slowed them rapidly. They drifted high over the south temperate zone. Below them stretched the seemingly endless expanse of a great blue-green ocean.

"They don't lack for water, do they?" Wade commented.

"We could pretty well figure on large oceans," Arcot said. "The land is green, and there are plenty of clouds."

Far ahead, a low mass of solid land appeared above the blue of the horizon. It soon became obvious that it was not a continent they were approaching, but a large island, stretching hundreds of miles north and south.

Arcot dropped the ship lower; the mountainous terrain had become so broken that it would be impossible to detect a city from thirty miles up.

The green defiles of the great mountains not only provided good camouflage, but kept any great number of ships from attacking the sides, where the ray stations were. The cities were certainly located with an eye for war! Arcot wondered what sort of conflict had lasted so long that cities were designed for perpetual war. Had they never had peace?

"Look!" Fuller called. "There's another city!" Below them, situated in a little natural bowl in the mountains, was another of the cone cities.

Wade and Fuller manned the ray projectors again; Arcot dropped the ship toward the city, one hand on the reverse switch in case the inhabitants tried to use the magnetic beam again.

Suddenly, the outside microphone picked up a low, humming sound. A long, cigar-shaped object was heading toward the ship at high speed. It had been painted a dark, mottled green, and was nearly invisible against background of foliage beneath the ship.

"Wade! Catch that on the ray!" Arcot commanded sharply, moving the ship to one side at the same time. Instantly, the guided missile turned and kept coming toward them.

Wade triggered the molecular beam, and the missile was suddenly dashing toward the ground with terrific speed. There was a terrific flash of flame and a shock wave of concussion. A great hole gaped in the ground.

"They sure know their chemistry," remarked Wade, looking down at the great hole the explosion had torn in the ground. "That wasn't atomic, but on the other hand, it wasn't dynamite or TNT, either! I'd like to know what they use!"

"Personally," said Arcot angrily, "I think that was more or less a gentle hint to move on!" He didn't like the way they were being received; he had wanted to meet these people. Of course, the other planet might be inhabited, but if it wasn't—

"I wonder—" said Morey thoughtfully. "Arcot, those people were obviously warned against our attack—probably by that other city. Now, we've come nearly halfway around this world; certainly we couldn't have gone much farther away and still be on the planet. And we find this city in league with the other! Since this league goes halfway around the world, and they expected us to do the same, isn't it fair to assume, just on the basis of geographical location, that all this world is in one league?"

"Hmmm—an interplanetary war," mused Arcot. "That would certainly prove that one of the other planets is inhabited. The question is—which one?"

"The most probable one is the next inner planet, Aphrodite," replied Morey.

With that, he shot the ship straight up, rotating the axis until it was pointing straight away from the planet. He increased the acceleration until, as they left the outer fringes of the atmosphere, the ship was hitting a full four gravities.

"I'm going to shorten things up and use the space control," Arcot said. "The gravitational field of the sun will drain a lot of our energy out, but so what? Lead is cheap, and before we're through, we'll have plenty or I'll know the reason why!"

Dr. Richard Arcot was angry—boiling all the way through!

There was the familiar tension in the air as the space field built up and they were hurled suddenly forward; the star-like dot of the planet suddenly expanded as they rushed forward at a speed far greater than that of light. In a moment, it had grown to a disc; Arcot stopped the space control. Again they were moving forward on molecular drive.

Very shortly, Arcot began to decelerate. Within ten minutes, they were beginning to feel the outermost wisps of the cloud-laden atmosphere. The heat of the blazing sun was intense; the surface of the planet was, no doubt, a far warmer place than Earthmen would find comfortable. They would have been far better suited to remain on the other planet, but they very evidently were not wanted!

Then, suddenly, the thick, all-enveloping mists that held them were gone. They were flying smoothly along under leaden skies—perpetual, dim, dark clouds. Despite the brightness of the sun above them, the clouds made the light dim and gray. They reflected such an enormous percentage of the light that struck them that the climate was not as hot as they had feared.

The ground was dark under its somber mantle of clouds; the hills, the rivers that crawled across wide plains, and the oddly stunted forests all looked as though they had been modeled in a great mass of greenish-gray putty. It was a discouraging world.

"I'm glad we didn't wait for our swim here," remarked Wade. "It sure looks like rain."

Arcot stopped the ship and held it motionless at ten miles while Wade made his chemical analysis of the air. The report looked favorable; plenty of oxygen and a trace of carbon dioxide mixed with nitrogen.

"But the water vapor!" Wade said. "The air is saturated with it! It won't be the heat, but the humidity that'll bother us—to coin a phrase."

Arcot dropped the ship still farther, at the same time moving forward toward a sea he had seen in the distance. Swiftly, the ground sped beneath them. The low plain sloped toward the sea, a vast, level surface of gray, leaden water.

"Oh, brother, what a pleasant world," said Fuller sarcastically.

It was certainly not an inspiring scene. The leaden skies, the heavy clouds, the dark land, and the gray-green of the sea, always shaded in perpetual half-light, lest the burning sun heat them beyond endurance. It was a gloomy world.

Finally, far ahead of them, and well back from the coast, Arcot spotted a great mountain range.

"I'm going to head for that," he told the others. "If these people are at war with our very inimical friends of the other planet, chances are they'll put their cities in the mountains, too."

They had such cities. The Ancient Mariner had penetrated less than a hundred miles along the twisted ranges of the mountains before they saw, far ahead, a great, cone-shaped city. The city was taller, larger than those of the other planet, and the cone ran up farther from the actual city buildings, leaving the aircraft more room.

Arcot stopped and watched the city a long time through the telescope. It seemed similar to the others in all respects. The same type of needle-like ships floated in the air above it, and the same type of cone ray projectors nestled in the base of the city's invisible protection.

"We may as well take a chance," said Arcot. He shot the ship forward until they were within a mile of the city, in plain sight of the inhabitants.

Suddenly, without any warning signal, apparently, all the air traffic went wild—then it was gone. Every ship seemed to have ducked into some unseen place of refuge.

Within a few minutes, a fleet of battleships was winging its way toward the invisible barrier. Then it was out, and, in a great semi-cylinder a quarter of a mile high, and a quarter of a mile in radius, they advanced toward the Ancient Mariner.

Arcot kept the ship motionless. He knew that their only weapon was the magnetic ray; otherwise they would have won the war long ago. And he knew he could cope with magnetism.

Quickly, Arcot jumped to his feet. "Morey, take the controls. Evidently they want to parley, not fight. I'm going over there."

He ran the length of the corridor to his room and put on his power suit. A moment later, he left the airlock and launched himself into space, flying swiftly toward the ship. He had come alone, but armed as he was, he was probably more than a match for anything they could bring to bear on him.

He went directly toward the broad expanse of glass that marked the control room of the alien ship and looked in curiously.

The pilot was a man much like Arcot; quite tall, and of tremendous girth, with a huge chest and great powerful arms. His hands, like those of the Venerians, had two thumbs.

With equal curiosity, the man stared at Arcot, floating in the air without apparent means of support.

Arcot hung there a moment, then motioned that he wished to enter. The giant alien motioned him around to the side of the ship. Halfway down the length of the ship, Arcot saw a port suddenly open. He flew swiftly forward and entered.

The man who stood there was a giant as tall as Wade and even more magnificently muscled, with tremendous shoulders and giant chest. His thighs, rounded under a close-fitting gray uniform, were bulging with smooth muscle.

He was considerably larger than the man in the pilot room, and whereas the other had been a pale yellow in color, this man was burned to a more healthy shade of tan. His features were regular and pleasing; his hair was black and straight; his high forehead denoted a high degree of intelligence, and his clear black eyes, under heavy black eyebrows, seemed curious, but friendly.

His nose was rather thin, but not sharp, and his mouth was curved in a smile of welcome. His chin was firm and sharp, distinct from his face and neck.

"Torlos," said the alien, pointing to his great chest.

"Arcot," replied the Earthman, pointing to himself. Then he pointed to the stranger. "Torlos." He knew he hadn't pronounced it exactly as the alien had, but it would suffice.

The stranger smiled in approval. "Ahcut," he said, pointing to the Earthman.

Then he pointed to the comparatively thin arms of the Earthman, and to his own. Then he pointed to Arcot's head and to the mechanism he wore on his back, then to his own head, and went through the motions of walking with great effort.

Again he pointed at Arcot's head, nodding his own in approval.

Arcot understood immediately what was meant. The alien had indicated that the Earthman was comparatively weak, but that he had no need of muscle, for he made his head and his machines work for him. And he had decided that the head was better!

Arcot looked at the man's eyes and concentrated on the idea of friendship, projecting it with all his mental power. The black eyes suddenly widened in surprise, which quickly turned to pleasure as he tried to concentrate on one thought.

It was difficult for Arcot to interpret the thoughts of the alien; all his concepts were in a different form. At last, he caught the idea of location—but it was location in the interrogative! How was he to interpret that?

Then it hit him. Torlos was asking: "Where are you from?"

Arcot pulled a pad of paper and a pencil from his pocket and began to sketch rapidly. First, he drew the local galaxy, with dots for stars, and swept his hand around him. He made one of the dots a little heavier and pointed at the bright blur in the cloudy sky above them. Then he drew a circle around that dot and put another dot on it, at the same time indicating the planet beneath them.

Torlos showed that he understood.

Torlos looked at him in incredulous wonder. Again he indicated his respect for Arcot's brain.

Arcot smiled and indicated the city. "Can we go there?" he projected into the other's mind.

Torlos turned and glanced toward the end of the corridor. There was no one in sight, so he shouted an order in a deep, pleasant voice. Instantly, another giant man came striding down the corridor with a lithe softness that indicated tremendous muscular power, excellently controlled. He saluted by placing his left hand over the right side of his chest. Arcot noted that for future reference.

Torlos spoke to the other alien for a moment. The other left and returned a minute later and said something to Torlos. Torlos turned to Arcot indicating that he should return to his ship and follow them.

Arcot suddenly turned his eyes and looked directly into the black eyes of the alien. "Torlos," he projected, "will you come with us on our ship?"

"I am commander of this ship. I can not go without the permission of my chief. I will ask my chief."

Again he turned and left Arcot. He was back in a few minutes carrying a small handbag. "I can go. This keeps me in communication with my ship."

Arcot adjusted his weight to zero and floated lightly out the doorway. He rose about six feet above the landing, then indicated to Torlos that he was to grasp Arcot's feet, one in each hand. Torlos closed a grip of steel about each ankle and stepped off the platform.

At once, they dropped, for the power suit had not been adjusted to the load. Arcot yelped in pain as Torlos, in his surprise at not floating, involuntarily gripped tighter. Quickly, Arcot turned on more power and gasped as he felt the weight mount swiftly. He had estimated Torlos' weight at two hundred seventy or so—and it was more like three hundred and fifty! Soon, however, he had the weight adjusted, and they floated easily up toward the Ancient Mariner.

A moment later, he was again back on the floor, rubbing his back. He shook his head and frowned, then smiled and pretended to limp.

"Don't let go so suddenly," he admonished telepathically.

"I did not know. I am sorry," Torlos thought contritely.

"Who's your friend?" asked Wade as he entered the corridor. "He certainly looks husky."

"He is," Arcot affirmed. "And he must be weighted with lead! I thought he'd pull my legs off. Look at those arms!"

"I don't want to get him mad at me," Wade grinned. "He looks like he'd make a mean opponent. What's his name?"

"Torlos," replied Arcot, just as Fuller stepped in.

Torlos was looking curiously at a crowbar that had been lying in a rack on the wall. He picked it up and flexed it a bit, as a man might flex a rapier to test its material. Then he held it far out in front of him and proceeded to tie a knot in the inch-thick metal bar! Then, still frowning in puzzlement, he untied it, straightened it as best he could, and put it back in the rack.

The Earthmen were staring in utter astonishment to see the terrific strength the man displayed.

He smiled as he turned to them again.

"If he could do that at arm's length," Wade said thoughtfully, "what could he do if he really tried?"

"Why don't you try and see?" Fuller asked sweetly.

"I can think of easier—but probably no quicker—ways of committing suicide," Wade replied.

Arcot laughed and, looking at Torlos, projected the general meaning of the last remarks. Torlos joined them in the laugh.

"All my people are strong," he thought. "I can not understand why you are not. That was a tool? We could not use it so; it is too weak."

Arcot held a moment of silent consultation with Torlos, then turned to the others. "We are supposed to follow these men to their city to have some kind of an audience with their ruler, according to Torlos. Let's get started; the rest of the fleet is waiting."

Arcot led Torlos through the main engine room, and was going into the main coil room when Torlos stopped him.

"Is this all your drive apparatus?" he thought.

"Yes, it is," Arcot projected.

"It is smaller than the power equipment of a small private machine!" His thoughts radiated surprise. "How could you make so great a distance?"

"Power," said Arcot. "Look!" He drew his molecular ray pistol. "This alone is powerful enough to destroy all your battle fleet without any danger on our part. And, despite your strength, you are helpless against me!"

Arcot touched a switch on his belt and vanished.

In amazement, Torlos reached out a hand to the spot where Arcot had stood. There was nothing there. Suddenly, he turned, touching the back of his head. Something had tugged at his hair!

He looked all around him and moved his arms around—to no avail. There was nothing there.

Then, in the blink of an eye, Arcot was floating in the air before him. "What avails strength against air, Torlos?" he asked, smiling.

"For safety's sake," Torlos thought, "I want to be your friend!" He grinned widely.

Arcot led the way on into the control room, where Morey had already started to follow the great fleet toward the city.

"What are we going to do at the city?" Arcot asked Torlos telepathically.

"This is the capital of the world, Sator, and here is the commander-of-all-military-and-civil-forces. It is he you will see. He has been summoned," Torlos replied carefully.

In sudden anxiety and concern, Torlos stared into Arcot's eyes. And in that look, Arcot read what even telepathy had hidden heretofore.

"Did you destroy the city?" asked Torlos anxiously. But it was not the question of a man hoping for the destruction of his enemies' cities; Arcot got the mental picture of the city, but with it, he picked up the idea of "home"! Of course, the ideas of "city" and "home" might be synonymous with these people; they never seemed to leave their cities. But why this feeling of worry?

"No, we didn't want to hurt them," Arcot thought. "We destroyed the ray building only in self defense."

"I understand." Despite obvious mental efforts, Torlos positively radiated a feeling of relief!

"Are you at war with that world?" Arcot asked coolly.

"The two worlds have been at war for many generations," Torlos said, then quickly changed the subject. "You will soon meet the leader of all the forces of Sator. He is all-powerful here. His word must be absolutely obeyed. It would be wise if you did not unnecessarily offend him. I see from what your mind tells me that you have great power, but there are many ships on Sator, more than Nansal can boast.

"Our commander, Horlan, is a military commander, but since every man is necessarily a soldier, he is a true ruler."

"I understand," Arcot thought. He turned to Morey and spoke in English, which Torlos could not understand. "Morey, we're going to see the top man here. He rules the army, which runs everything. You and I will go, and leave Wade and Fuller behind as a rear guard. It may not be dangerous, but after being chased off one world, we ought to be as careful as possible.

They had followed the Satorian ships toward the city. The giant magnetic ray barrier opened for them, and the Ancient Mariner followed. They were inside the alien city.

Below the Ancient Mariner, the great buildings of the alien city jutted up in the gray light of this gray world; their massiveness seemed only to accentuate the depressing light.

On the broad roofs, they saw hundreds of people coming out to watch them as they moved across the city. According to Torlos, they were the first friendly strangers they had ever seen. They had explored all the planets of this system without finding friendly life.

The buildings sloped up toward the center of the city, and the mass of the great central building loomed before them.

The fleet that was leading the Earth ship settled down to a wide courtyard that surrounded the building. Arcot dropped the Ancient Mariner down beside them. The men from Torlos' ship formed into two squads as they came out of the airlocks and marched over to the great shining ship of Earth. They formed two neat rows, one on each side of the airlock.

"Come on, Morey," said Arcot. "We're wanted. Wade, keep the radio going at full amplification; the building may cut out some of the power. I'll try to keep you posted on what's going on, but we'll probably be busy answering questions telepathically."

Before them was a heavy gate of solid bronze which swung on massive bronze hinges. The building seemed to be made of a dense, gray stone, much like granite, which was depressing in its perfectly unrelieved front. There were no bright spots of color as there were on all Earthly and Venerian structures. Even the lines were grimly utilitarian; there seemed to be no decoration.

Through the great bronze door they walked, and across a small vestibule. Then they were in a mighty concourse, a giant hallway that went completely through the structure. All around them great granite pillars rose to support the mighty building above. Square cut, they lent but little grace to the huge room, but the floor and walls were made of a hard, light green stone, almost the same color as foliage.

On one wall there was a giant tablet, a great plaque fifteen feet high, made of a deep violet stone, and inlaid with a series of characters in the language of this world. Like English letters, they seemed to read horizontally, but whether they read from left to right or right to left there was no way of knowing. The letters themselves were made of some red metal which Arcot and Morey didn't recognize.

Arcot turned to Torlos and projected a thought: "What is that tablet?"

"Ever since the beginning of the war with the other planet, Nansal, the names of our mighty leaders have been inscribed on that plaque in the rarest metal."

The term "rarest metal" was definite to Torlos, and Arcot decided to question him further on the meaning of it when time permitted.

It continued just long enough for the Earthmen to get used to it, then it snapped off, and they went flying up toward the ceiling as it continued upward under its own momentum. It slowed under the influence of the planet's gravitation and came to a stop exactly opposite the doorway of a higher floor.

"Wow! Some elevator!" exclaimed Morey as he stepped out, flexing his knees as he tried to readjust himself. "That's what I call a violent way of getting upstairs! It wasn't designed by a lazy man or a cripple! I prefer to walk, thanks! What I want to know is how the old people get upstairs. Or do they die young from using their elevators?"

"No," mused Arcot. "That's the funny thing. They don't seem to be bothered by the acceleration. They actually jumped a little off the floor when we started, and didn't seem to experience much difficulty when we stopped." He looked thoughtful for a moment. "You know, when Torlos was bending that crowbar back there in the ship, I picked up a curious thought—I wonder if—" He turned to the giant alien. "Torlos, you once gave me the thought-idea 'bone metal'; what is that?"

Torlos looked at him in surprise and then pointed mutely to a heavy belt he wore—made of closely woven links of iron wire!

"I was right, Morey!" Arcot exclaimed. "These men have iron bones! No wonder he could bend that crowbar! It would be as easy as it would for you or me to snap a human arm bone!"

"But, wait a minute!" Morey objected. "How could iron grow?"

"How can stone grow?" countered Arcot. "That's what your bones are, essentially—calcium phosphate rock! It's just a matter of different body chemistry. Their body fluids are probably alkaline, and iron won't rust in an alkaline solution." Arcot was talking rapidly as they followed the aliens down the long corridor.

Morey grinned. "I'll be willing to bet they don't use cells in their prisons, here! Just magnetize the floor, and the poor guy could never get away!"

Arcot nodded. "Of course, the bones must be pure iron; their bones evidently don't retain any of the magnetism when they leave the field."

"We seem to be here," Morey interrupted. "Let's continue the discussion later."

Their party had stopped just outside a large, elaborately carved door, the first sign of ornamentation the Earthmen had seen. There were four guards armed with pistols, which, they discovered later, were powered by compressed air under terrific pressure. They hurled a small metal slug through a rifled barrel, and were effective over a distance of about a mile, although they could only fire four times without reloading.

Torlos spoke briefly with the guard, who saluted and opened the door. The two Earthmen followed Torlos into a large room.

Before them was a large, crescent-shaped table, around which were seated several men. At the center of the crescent curve sat a man in a gray uniform, but he was so bedecked with insignia, medals, ribbons, and decorations that his uniform was scarcely visible.

The entire assemblage, including the leader, rose as the Earthmen entered. Arcot and Morey, taking the hint, snapped to attention and delivered a precise military salute.

"We greet you in the name of our planet," said Arcot aloud. "I know you don't understand a word I'm saying, but I hope it sounds impressive enough. We salute you, O High Muckymuck!"

Morey, successfully keeping a straight face, raised his hand and said sonorously: "That goes double for me, bub."

Arcot watched the man closely while he spoke. He was taller than Torlos, but less heavily built, as were all the others here. It seemed that Torlos was unusually powerful, even for this world.

When the leader had finished, Arcot smiled and turned to project this thoughts at Torlos.

"Tell your leader that we come from a planet far away across the vast depths of space. We come in peace, and we will leave in peace, but we would like to ask some favors of him, which we will repay by giving him the secret of our weapons. With them, he can easily conquer Nansal.

"All we want is some wire made from the element lead and some information from your astronomers."

Torlos turned and spoke to his leader in a deep, powerful voice.

Meanwhile, Morey was trying to get in communication with the ship. The walls, however, seemed to be made of metal, and he couldn't get through to Wade.

"We're cut off from the ship," he said quietly to Arcot.

"I was afraid of that, but I think it'll be all right. Our proposition is too good for them to turn down."

Torlos turned back to Arcot when the leader had finished speaking. "The Commanding One asks that you prove the possibilities of your weapons. His scientists tell him that it is impossible to make the trip that you claim to have made."

"What your scientists say is true, to an extent," Arcot thought. "They have learned that no body can go faster than the speed of light—is that not so?"

"Yes. Such, they say, is the fact. To have made this trip, you must, of necessity, be not less than twenty million years old!"

"Tell them that there are some things they do not yet know about space. The velocity of light is a thing that is fixed by the nature of space, right?"

"How fast does sound travel?" Arcot asked.

"They ask in what medium do you mean?"

"How fast does light travel? In air? In glass? The speed of light is as variable as that of sound. If I can alter the nature of space, so as to make the velocity of light greater, can I not then go faster than in normal space?"

"They say that this is true," Torlos said, after more conversation with the men at the table, "but they say that space is unalterable, since it is emptiness."

"Ask them if they know of the curvature of space." Arcot was becoming worried for fear his explanation would be unintelligible; unless they knew his terms, he could not explain, and it would take a long time to teach them.

"They say," Torlos thought, "that I have misunderstood you. They say space could not possibly be curved, for space is emptiness, and how could empty nothingness be curved."

Arcot turned to Morey and shrugged his shoulders. "I give up, Morey; it's a bad case. If they insist that space is nothing, and can't be curved, I can't go any further."

"If they don't know of the curvature of space," said Morey, "ask them how they learned that the velocity of light is the limiting velocity of a moving body."

Torlos translated and the scientists gave their reply. "They say that you do not know more of space than they, for they know that the speed of light is ultimate. They have tested this with spaceships at high speeds and with experiments with the smallest particles of electricity."

The scientists were looking at Arcot now in protest; they felt he was trying to foist something off on them.

He drew his molecular ray pistol and lifted a heavy metal chair into the air. Then Morey drew his heat beam and turned it on the chair. In a few seconds, it was glowing white hot, and then it collapsed into a fiery ball of liquid metal. Morey shut off the heat beam, and Arcot held the ball in the air while it cooled rapidly under the influence of the molecular ray. Then he lowered it to the floor.

It was obvious that the scientists were impressed, and the Emperor was talking eagerly with the men around him. They talked for several minutes, saying nothing to the Earthmen. Torlos stood quietly, waiting for a message to relay.

The Emperor called out, and some of the guards moved inside the door.

Torlos turned to Arcot. "Show no emotion!" came his telepathic warning. "I have been listening to them as they spoke. The Commanding One wants your weapons. Regardless of what his scientists tell him about the possibility of your trip, he knows those weapons work, and he wants them.

"You see, I am not a Satorian at all. I'm from Nansal, sent here many years ago as a spy. I have served in their fleets for many years, and have gained their trust.

"I am telling you the truth, as you will soon see.

"These people are going to follow their usual line of action and take the most direct way toward their end. They are going to attack you, believing that you, despite your weapons, will go down before superior numbers.

"And you'd better move fast; he's calling the guards already!"

Arcot turned to Morey, his face calm, his heart beating like a vibrohammer. "Keep your face straight, Morey. Don't look surprised. They're planning to jump us. We'll rip out the right wall and—"

Torlos seized the man by one leg and an arm and, tensing his huge muscles, hurled him thirty feet against the Commanding One with such force that both were killed instantly! He turned and grabbed another before his first victim had landed and hurled him toward the advancing guards. Arcot thought fleetingly that here was proof of Torlos' story of being from Nansal; the greater gravity of the third planet made him a great deal stronger than the Satorians!

One of the guards was trying to reach for Arcot. Acting instinctively, the Earthman lashed out with a hard jab to the point of the Satorian's jaw. The iron bones transmitted the shock beautifully to the delicate brain; the man's head jerked back, and he collapsed to the floor. Arcot's hand felt as though he'd hit it with a hammer, but he was far too busy to pay any attention to the pain.

Morey, too, had realized the futility of trying to overcome the guards by wrestling. The only thing to do was dodge and punch. The guards were trying to take the Earthmen alive, but, because of their greater weight, they couldn't move quite as fast as Arcot and Morey.

Torlos was still in action. He had seen the success of the Earthmen who, weak as they were, had been able to knock a man out with a blow to the jaw. Driving his own fists like pistons, he imitated their blows with deadly results; every man he struck went down forever.

The dead were piling around him, but through the open door he could see reinforcements arriving. Somehow, he had to save these Earthmen; if Sator got their secrets, Nansal would be lost!

He reached down and grabbed one of the fallen men and hurled him across the room, smashing back the men who struggled to attack. Then he picked up another and followed through with a second projectile. Then a third. With the speed and tirelessness of some giant engine of war, he slammed his macabre ammunition against the oncoming reinforcements with telling results.

In a moment, every man in the room was dead except for the two Earthmen and the giant Torlos.

Outside the room, they could hear shouted orders as more of the Satorian guards were rallied.

"They'll try to kill us now!" Arcot said. "Come on, we've got to get out of here!"

"Sure," said Morey, "but which way?"