* * * * *

Another voice replied that The Master would be informed. In the meantime the deputy for Brazil was notified.

This list of bits of information chilled Bell's blood. This man, of Venezuela, had been denied the grace of The Master by the deputy in Caracas. He would probably use the passwords and demand the grace of The Master of sub-deputies in the State of Para. To be seized and Caracas informed. The deputy in Colombia desired that the son of Colonel Garcia—upon a hunting-party with friends in the Amazon basin—should be attached to the service of The Master. His father had been so attached, and it was believed had smuggled a letter into the foreign mail warning his son. If possible, that letter should be intercepted. And from Paraguay the deputy requested that the family of Senor Gomez, visiting relatives in Rio, should be induced to regard the service of The Master as desirable....

The orders ceased abruptly. Ribiera acknowledged them. The whining whistle cut off. And Bell turned to Paula very grimly indeed.

"Pretty, isn't it?" he asked in a vast calmness. "Apparently every nation on the continent has some devil like Ribiera in charge of the administration of this fiendish poison. Every republic has some fiend at work in it. And they're organized. My God! They're organized! The Master seems to supply them with the mixture of poison and its antidote, and they report to him...."

* * * * *

Paula nodded.

"That was what my father had written down for you," she said quietly. "Any man who can be lured to eat or drink anything these men have prepared is lost. He gains no pleasure, as a drug might give. He is entrapped into a lifetime of awful fear, knowing that a moment's disobedience, a moment's reluctance to obey whatever command they give, will cause his madness."

"I'm trying to think what we can work out of this," said Bell shortly. "Some things are clear. There's a radio receiving set nearby, which listened to those short-wave reports. Within five or six miles, at most. We're going to find that to-morrow. And there's a central point, a fazenda, where one may talk direct with The Master, whoever and wherever he may be. And—judging by Ribiera—my guess is that The Master has the same hold upon them that they have on their underlings. Ribiera is too arrogant a scoundrel to make obsequious reports if he were not afraid to omit them." He was silent for a moment, thinking. Then he said abruptly, "Try to get some sleep, if you can. That pistol of Ribiera's—you have it handy? Keep it where you can reach it in the dark. I'm going to watch, though."

Paula settled herself comfortably, and looked queerly across the dimly lit little cabin at him.

"My friend," she said with the faintest of quavering smiles, "Please do not reassure me. I have the courage of endurance, at least. And—I do not fear you."

* * * * *

It seemed to Bell, listening in the darkness that fell when he turned off the switch, that she stayed awake for a long time. But when she did sleep, she slept heavily.

Bell had a raft of canes afloat beside the amphibian when she waked. He was sweat-streaked and bitten by many insects. He was tired, and his clothes were rags. But the raft was nearly twenty feet long, it would easily float two persons and what small supplies the plane carried, and it could be handled by a long pole.

"Hullo," he said cheerfully when she climbed on top of the waterlogged hull of the plane. "We're nearly ready to start off. I'm sorry I can't advise you to try to refresh yourself in the river. There are some fish in it that are fiends. One of them took a slice out of the side of my hand."

"Piranhas!" she exclaimed, and was pale. "You should have known!"

Piranhas are small fresh-water fish of the Brazilian rivers, never more than a foot and a half long, which prove the existence of a devil. Where they swarm in schools they will tear every morsel of flesh from a swimmer's body as he struggles to reach shore, and leave a clean-stripped skeleton of a mule or horse if an animal should essay to swim a stream.

"I'll ask, next time," said Bell ruefully. "I'd planned a swim. But if you'll fix some coffee while I finish up this raft, we'll get going. I don't think we're far from some place or other. I heard what sounded suspiciously like a motor boat, about dawn."

* * * * *

She looked at him anxiously.

"Of course," said Bell, smiling, "if the boat belonged to whoever listened in on the Rio broadcast and the short-wave news, he won't be especially friendly, though he should be glad to see us. But I've been studying the map, and I have a rather hopeful idea. Let's have coffee."

He grinned as long as she was in sight, and when he went into the cabin of the plane he seemed more cheerful still. But the idea of floating down this nameless little jungle stream upon a raft of canes was not one that he would have chosen. It was forced upon him. To travel through the jungle itself was next to impossible with a girl, especially as they were dressed for city streets and not at all for battling with dense and thorn-studded undergrowth. And to stay with the plane was obviously absurd. Sooner or later they had to abandon it, though the moment they did desert it they would be encountering not only the impersonal menace of the jungle, but the actual enmity of all the human race. The raft was the only possibility.

* * * * *

It floated smoothly enough when they started off, with Bell working inexpertly with his long pole to keep it in mid-stream. He was, of course, acutely apprehensive. In country like this a rapid could be expected anywhere. The jungle life loomed high above their heads on either side, and the life of the jungle went on undisturbed by their passage. Monkeys gaped at them and exchanged undoubtedly witty comments upon their appearance. Birds flew overhead with raucous and unpleasant cries. Toucans, in particular, made a most discordant din. Once they disturbed a tiny herd of peccaries, drinking, which regarded them pugnaciously and trotted sturdily out of sight as they came abreast.

But for one mile, for two, the stream flowed smoothly. A third.... And Paula pointed ahead in silence. A dug-out projected partly from the shoreline. Bell wielded his long pole cautiously now, and drew closer and ever closer to the stream bank. Paula pointed again. There was even a small dock—luxury unthinkable in these wilds.

The raft touched bottom. And suddenly from somewhere out of sight there came a horrible and a bestial sound. It was a scream of blood-lust, of madness, of overpowering and unspeakable rage. Following it came cackling laughter.

Paula went white.

"The fazenda," said Bell softly, "of the sub-deputy who was listening in on Ribiera last night. And it sounds as if someone were very much amused. Some poor devil...."

Paula shuddered.

"I'm going ashore," said Bell, smiling frostily. "There's nothing else to do."

CHAPTER VIII

Crouched at the edge of the jungle, where the clearing began, Paula heard four shots. Two in quick succession, and a wait of minutes. Then a third, and another long wait, and then the last. Then silence. Paula began to shiver. Bell had helped her ashore from the raft and insisted on her waiting at the edge of the jungle.

"Not that you'll be any safer," he had told her grimly, "but that I may be. One person can move more quickly than two. And if I'm chased I'll plunge for the place you're hidden, and you can open fire. Then the two of us might hold them off."

"Why?" Paula said slowly.

And Bell caught at her wrist.

"Don't let me hear you talk like that!" he said sharply. "We're going to beat this thing! We've got to! And being desperate helps, but being in despair doesn't help a bit. Buck up!"

He frowned at her until she smiled.

"I will not despair again without your permission," she told him. "Really. I will not."

He found her a hiding-place and went cautiously out into the clearing, still frowning.

* * * * *

He had been gone five minutes before the first shot sounded, and quite ten before the last rang out dully, and was echoed and re-echoed hollowly by the jungle trees. And Paula lay waiting by the edge of the clearing, Ribiera's pearl-handled automatic in her hand—Bell had carried the rifle from the plane. Small insects moved all about her, and she heard soft rustlings as the life of the jungle went on over her head and under her feet, and terror welled up in her throat.

She was trembling almost uncontrollably when Bell came back. He walked openly toward her hiding-place.

"Paula."

She came out, trying to steady her quivering lips.

"We're all right," said Bell grimly. "This is the fazenda of a sub-deputy. I suspect, also, it's an emergency landing field for Ribiera on the way to that place he talked to last night. There's a two-place plane here with both wheels and floats, in a filthy little shed. It seems to be all right. We're going to take off in it and try to make Moradores, where your people are. What's the matter?"

Her face was deathly pale.

"I thought," she said with some difficulty, "when I heard the shots—I thought you were killed."

Bell shook his head.

"I wasn't," he said grimly. "It was four other men who were killed."

* * * * *

He led her carefully past the house. It was a fairly typical fazenda dwelling, if more substantial than most. It was wholly unpretentious, with whitewashed walls, and the effect of grandeur it would give to natives of this region would come solely from the number of buildings. There were half a dozen or more.

"I killed four men," repeated Bell coldly. "And I'm damned glad of it. That scream we heard.... I know pretty well what happened here last night. Remember, Ribiera spoke of using a beam-wireless to make his report. He must have had a short-wave beam set somewhere on the outskirts of Rio, aimed at whatever headquarters he reports to. He's going up to that headquarters some time to-day, by plane, of course. He needed emergency landing fields along the route, and here he picked out a native and made him a sub-deputy. Charming...."

Moving past the buildings, Paula caught sight of massive wooden bars set in the side of a building. Something crumpled up and limp lay before them.

"Don't look over there," said Bell harshly. "There was a woman in this house and she told me what happened, though I'd guessed it before. The sub-deputy was here last night with a party of friends. Newly enslaved, some of them. He entertained them.... Up at Ribiera's place a girl told me she and her husband had been shown a Secret Service man. He went mad before their eyes. It was an object-lesson for them, a clear illustration of what would happen to them if they ever disobeyed. I imagine that something of the sort is used by all The Master's deputies to convince their slaves of the fate that awaits them for disobedience. The local man had brought a party up to watch two men go mad. After that sight they'll be obedient."

* * * * *

He reached a shed, huge, but in disrepair. Monster doors were ajar. Bell heaved at them and swung them wide. A small, trim, two-seated plane showed in the shadowy interior.

"This is for emergency use," said Bell grimly, "and we face an emergency. I'll get it out and load it up. There's a dump of gas and so on here. You might look around outside the door, in case the one man who got away can find someone to help stop me."

He set to work checking on fuel and oil. He loaded extra gas in the front cockpit, a huge tin of it. Another would crowd him badly in the pilot's cockpit in the rear, but he stowed it as carefully as he could.

"The local sub-deputy," he added evenly, "has added to the thrill by having the two men put in one cage. He let his guests observe the progress of the madness the damned poison produces. And presently, as the madness grew, the two men fought. They were murder mad. The local sub-deputy gave his guests the thrill of watching maniacs battling to the death. He left early this morning with his party, and I imagine that everyone was suitably submissive to his demands for the future. There were four men and a woman left as caretakers here. I found the four men before the cage, baiting the poor devil who'd killed the other last night. That's why we heard the scream. When I came up with my rifle they stared at me, and ran.

* * * * *

"I got one then, and as a matter of mercy I put a bullet through the man who'd gone murder mad. The"—Bell sounded as if he were acutely nauseated—"the man he'd killed was still in the cage. My God!... Then I went looking for the other three men. Wasting time, no doubt, but I found them. I was angry. I got one, and the others ran away again. A little later the third man jumped me with a knife. He slit my sleeve. I killed him. Didn't find the fourth man." Bell moved to the front of the plane. "I'll see if she catches."

He swung on the stick. It went over stiffly. Again, and again. With a bellow, the motor caught. Bell shouted in Paula's ear.

"We'll get in. Use the warming-up period to taxi out. We want to get away as soon as we can."

He helped her up into the seat, then remembered. He rummaged about and flung a tumbled flying suit up in the cockpit with her.

"If you get a chance, put it on!" he shouted. He stepped into a similar outfit, reached up and throttled down the motor, and kicked away the blocks under the wheels. He vaulted up into place. And slowly and clumsily the trim little ship came lurching and rolling out of the shed.

* * * * *

The landing field was not large, but Bell took the plane to its edge. He faced it about, and bent below the cockpit combing to avoid the slip stream and look at his maps again, brought from the big amphibian. Something caught his eye. Another radio receiving set.

"Amphibian planes," he muttered, "for landing on earth or water. And radios. I wonder if he has directional for a guide? It would seem sensible, and if a plane went down the rest of them would know about where to look."

Paula reached about and touched his shoulder. She pointed. There was a movement at the edge of the jungle and a puff of smoke. A bullet went through the fusilage of the plane, inches behind Bell. He frowned, grasped the stick, and gave the motor the gun.

It lifted heavily, like all amphibians, but it soared over the group of buildings some twenty or thirty feet above the top of the wireless mast and went on, rising steadily, to clear even the topmost trees on the farther side of the stream by a hundred feet or more.

It went on and on, roaring upward, and the jungle receded ever farther below it. The horizon drew back and back. At two thousand feet the earth began to have the appearance of a shallow platter. At three thousand it was a steep sided bowl, and Bell could look down and trace the meandering of the stream on which he had landed the night before. Not too far downstream—some fifteen miles, perhaps—were the squalid, toy sized structures of a town of the far interior of Brazil. He never learned its name, but even in his preoccupation with the management of the plane and a search for landmarks, he wondered very grimly indeed what would be the state of things in that town. If in Rio, where civilization held sway, Ribiera exercised such despotic though secret power, in a squalid and forgotten little village like this the rule of a sub-deputy of The Master could be bestial and horrible beyond belief.

* * * * *

Eastward. Bell had overshot the mark the night before. Before he had located himself he was quite fifty miles beyond the spot Paula had suggested as a hiding place. Now he retraced his way. A peak jutting up from far beyond the horizon was a guiding mark. He set the plane's nose for it, and relaxed.

The motor thundered on valorously. Far below was a vast expanse of thick jungle, intercepted but nowhere broken by occasional small streams and now and then the tiny, angular things which might be houses. But houses were very infrequent. In the first ten miles—with a view of twenty miles in every direction—Bell picked out no more than four small groups of buildings which might be the unspeakably isolated fazendas of the folk of this region.

"Ribiera was coming this way," he muttered.

He fumbled the headphone of the radio set into place. The set seemed to be already arbitrarily tuned. He turned it on. There was a monotonous series of flashes, with the singing note of a buzzer in them. A radio direction signal.

"Ribiera's on the way."

Bell stared far ahead, without reason. And it seemed to him that just then, against that far distant guiding peak, he saw a black speck floating in mid-air.

* * * * *

He pulled back the joy stick. Detached, feathery clouds spread across the sky, and he was climbing for them. Paula looked behind at him, and he pointed. He saw her seem to stiffen upon sight of the other aircraft.

In minutes Bell's plane was tearing madly through sunlit fleecy monsters which looked soft and warm and alluring, and were cold and damp and blinding in their depths. Bell kept on his course. The two planes were approaching each other at a rate of nearly two hundred miles an hour.

And then, while the harsh, discordant notes of the radio signal sounded monotonously in his ears, Bell stared down and, through a rift between two clouds, saw the other plane for an instant, a thousand feet below.

The sun shone upon it fiercely. Its propeller was a shimmering, cobwebby disk before it. It seemed to hang motionless—so short was Bell's view of it—between earth and sky: a fat glistening body as of a monstrous insect. Bell could even see figures in its cockpits.

Then it was gone, but Bell felt a curious hatred of the thing. Ribiera was almost certainly in it, headed for the place to which he had spoken the night before. And Bell was no longer able to think of Ribiera with any calmness. He felt a personal, gusty hatred for the man and all he stood for.

* * * * *

His face was grim and savage as his own plane sped through the clouds. But just as the two aircraft had approached each other with the combined speed of both, so they separated. It seemed only a moment later that Bell dipped down below the clouds and the other plane was visible only as a swiftly receding mote in the sunlight.

"I wonder," said Bell coldly to himself, with the thunder of the motor coming through the singing of the air route signal, "I wonder if he'll see the ship I cracked up last night?"

Paula was pointing. The shoulder of a hill upthrust beneath the jungle. The tall trees were cleared away at its crest. Small, whitewashed buildings appeared below.

"Good landing field," said Bell, his eyes narrowing suddenly. "On the direct route. Fifty miles back there's another landing field. I wonder...."

He was already suspicious before he flattened out above the house, while dogs fled madly. He noticed, too, that horses in a corral near the buildings showed no signs of fright. And horses are always afraid of landing aircraft, unless they have had much opportunity to grow accustomed to them.

The little plane rolled and bumped, and gradually came to a stop. Bell inconspicuously shifted a revolver to the outer pocket of his flying suit. Figures came toward them, with a certain hesitating reluctance that changed Bell's suspicions even while it confirmed them.

* * * * *

"Paula," he said grimly, "this is another landing field for Ribiera's emergency use. It sticks out all over the place. Relatives or no relatives, you want to make sure of them. You understand?"

Her eyes widened in a sudden startled fear. She caught her breath sharply. Then she said quietly, though her voice trembled:

"I understand. Of course."

She slipped out of the plane and advanced to meet the approaching figures. There were surprised, astounded exclamations: A bearded man embraced her and shouted. Women appeared and, after staring, embraced. Paula turned to wave her hand reassuringly to Bell, and vanished inside the house.

Bell looked over his instruments, examined the gas in the tank, and began to work over his maps in the blaring sunlight. He cut out the switch and the motor stopped with minor hissings of compression. The maps held his attention, though he listened keenly as he worked for any signs of trouble that Paula might encounter.

He was beginning to have a definite idea in his mind. Ribiera had talked to a headquarters somewhere, by beam radio from Rio. Beam wireless, of course, is nothing more or less than a concentration of a radio signal in a nearly straight line, instead of allowing it to spread about equally on all sides of the transmitting station. It makes both for secrecy and economy, since nearly all the power used at the sending apparatus is confined to an arc of about three degrees of a circle. Directed to a given receiving station, receiving outfits to one side or the other of that path are unable to listen in, and the signal is markedly stronger in the chosen path. Exactly the same process, of course, is used for radio directional signals, one of which still buzzed monotonously in Bell's ears until he impatiently turned it off. A plane in the path hears the signal. If it does not hear the signal, it is demonstrably off the straight route.

* * * * *

Bell, then, was in a direct line from Rio to the source of a radio direction signal. Fifty miles back, where the big amphibian had crashed, he was in the same air line. To extend that line on into the interior would give the destination of Ribiera, and the location of the headquarters where direct communication with The Master was maintained.

He worked busily. His maps were in separate sheets, and it took time to check the line from Rio. When he had finished, he computed grimly.

"At a hundred miles in hour...." He was figuring the maximum distance which could plausibly be accepted as a day's journeying by air. He surveyed the maps again. "The plateau of Cuyaba, at a guess. Hm.... Fleets of aircraft could practise there and never be seen. An army could be maneuvered without being reported. Certainly the headquarters for the whole continent could be there. Striking distance of Rio, Montevideo, Buenos Aires, La Paz, and Asuncion. Five republics."

* * * * *

Certainly, from his figures, it seemed plausible that somewhere up on the Plateau of Cuyaba—where no rails run, no boats ply, and no telegraph line penetrates; which juts out ultimately into that unknown region where the Rio Zingu and the Tapajoz have their origins—certainly it seemed plausible that there must lie the headquarters of the whole ghastly conspiracy. There, it might be, the deadly plants from which The Master's poison was brewed were grown. There the deadly stuff was measured out and mixed with its temporary antidote....

Paula came back, a young man with her. Her eyes were wide and staring, as if she had looked upon something vastly worse than death.

"He—Ribiera," she gasped. "My uncle, he owned this place. They—have him here—alive—and mad! And all the rest...."

Bell fumbled in the pocket of his flying suit. The young man with Paula was looking carefully at the plane. And there was a revolver in a holster at his side. An air of grim and desperate doggedness was upon him.

"This is—my cousin," gasped Paula. "He—and his wife—and—and—"

* * * * *

The young man took out his weapon. He fired. There was a clanging of metal, the screech of tortured steel. Bell's own revolver went off the fraction of a second too late.

"You may kill me, Senhor," said the young man through stiff lips. His revolver had dropped from limp fingers. He pressed the fingers of his left hand upon the place where blood welled out, just above his right elbow. "You may kill me. But if you and my cousin Paula escaped.... I have a wife, Senhor, and my mother, and my children. Kill me if you please. It is your right. But I have seen my father go mad." Sweat, the sweat of agony and of shame, came out upon his face. "I fought him, Senhor, to save the lives of all the rest. And I have spoiled your engine, and I have already sent word that you and Paula are here. Not for my own life, but...."

He waited, haggard and ashamed and desperate and hopeless. But Bell was staring at the motor of the airplane.

"Crankcase punctured," he said dully. "Aluminum. The bullet went right through. We can't fly five miles. And Ribiera knows we're here—or will."

CHAPTER IX

There was the sound of weeping in the house, the gusty and hopeless weeping of women. Bell had been walking around and around the plane, staring at it with his hands clenched. Paula watched him.

"I am thinking," she said in an attempt at courage, "that you said I must not despair without your permission. But—"

"Hush!" said Bell impatiently. He stared at the engine. "I'd give a lot for a car. Bolts.... How many hours have we?"

"Four," said Paula drearily. "Perhaps five. You have smashed the radio in the house?"

Bell nodded impatiently. He had smashed the radio, a marvelously compact and foolproof outfit, arbitrarily tuned to a fixed short wave-length. It was almost as simple to operate as a telephone. There had been no opposition to the destruction. Paula's cousin had disabled their plane and reported their presence. He was inside the house now, sick with shame—and yet he would do the same again. In one of the rooms of the house, behind strong bars, a man was kept who had been an object-lesson....

"Is there any machinery?" asked Bell desperately. "Any at all about the place?"

Paula shook her head.

"It may be that there is a pump."

Bell went off savagely, hunting it. He came back and dived into the cockpit of the plane. He came out with a wrench, and his jaws set grimly. He worked desperately at the pump. He came back with two short, thick bolts.

He crawled into the plane again, tearing out the fire wall impatiently, getting up under the motor.

"We have one chance in five thousand," he said grimly from there, "of getting away from here to crash in the jungle. Personally, I prefer that to falling into Ribiera's hands. If your cousin or anybody else comes near us, out here, call me, and I'll be much obliged."

* * * * *

There was the sound of scraping, patient, desperate, wholly unpromising scraping. It seemed to go on for hours.

"The wrench, please, Paula."

She passed it to him. The bullet had entered the aluminum crankcase of the motor and pierced it through. By special providence it had not struck the crankshaft, and had partly penetrated the crankcase on the other side. Bell had cut it out, first of all. He had two holes in the crankcase, then, through which the cylinder oil had drained away. And of all pieces of machinery upon earth, an aircraft motor requires oil.

Bell's scraping had been to change the punctured holes of the bullet into cone shaped bores. The aluminum alloy was harder than pure aluminum, of course, but he had managed it with a knife. Now he fitted the short bolts in the bores, forced the threads on them to cut their own grooves, and by main strength screwed them in to a fit. He tightened them.

He came out with his eyes glowing oddly.

"The vibration will work them loose, sooner or later," he observed grimly, "and they may not be oil tight. Also, the crankshaft may clear them, and it may not. If we go up in the ship in this state we may get five miles away, or five hundred. At any minute it may fail us, and sooner or later it will fail us. Are you game to go up, Paula?"

* * * * *

She smiled at him.

"With you, of course."

He began to brush off his hands.

"There ought to be oil and gas here," he said briefly. "Another thing, there'll probably be some metal chips in the crankcase, which may stop an oil line at any minute. It's a form of committing suicide, I imagine."

He went off, hunting savagely for the supplies of fuel and lubricant which would be stored at any emergency field. He found them. He was pouring gasoline into the tanks before what he was doing was noticed. Then there was stunned amazement in the house. When he had the crankcase full of oil the young man came out. Bell tapped his revolver suggestively.

"With no man about this house," he said grimly, "Ribiera will put in one of his own choice. And you have a wife and children and they'll be at that man's mercy. Don't make me kill you. Ribiera may not blame you for my escape if you tell him everything—and you're hurt, anyway. Either we get away, and you do that, or you're killed and we get away anyhow."

He toppled two last five gallon tins of gasoline into the cockpits—crowding them abominably—and swung on the prop. The engine caught. Bell throttled it down, kicked away the stones with which he had blocked its wheels, and climbed up into the pilot's cockpit. With his revolver ready in his lap he taxied slowly over to a favorable starting point.

* * * * *

The ship rose slowly, and headed west again. At three thousand feet he cut out the motor to shout to Paula.

"One place is as good as another to us, now. The whole continent is closed to us by now. I'm going to try to find that headquarters and do some damage. Afterwards, we'll see."

He cut in the motor again and flew steadily westward. He rose gradually to four thousand feet, to five.... He watched his instruments grimly, the motor temperature especially. There were flakes of metal in the oil lines. Twice he saw the motor temperature rise to a point that brought the sweat out on his face. And twice he saw it drop again. Bits of shattered metal were in the oiling system, and they had partly blocked the stream of lubricant until the engine heated badly. And each time the vibration had shifted them, or loosened them....

They had left the big amphibian no earlier than nine o'clock. It was noon when they took off for the fazenda of Paula's kin. But it was five o'clock and after when they rose from there with an engine which might run indefinitely and might stop at any second.

Bell did not really expect it to run for a long time. He had worked as much to cheat Ribiera of the satisfaction of a victory as in hopes of a real escape. But an hour, and the motor still ran. It was consistently hotter than an aero engine should run. Twice it had gone up to a dangerous temperature. One other time it had gone up for a minute or more as if the oiling system had failed altogether. But it still ran, and the sun was sinking toward the horizon and shadows were lengthening, and Bell began to look almost hopefully for a clearing in which to land before the dark hours came.

Then it was that he saw the planes that had been sent for him and for Paula.

* * * * *

There were three of them, fast two-seaters very much like the one he drove. They were droning eastward, with all cockpits filled, from that enigmatic point in the west. And Bell had descended to investigate a barely possible stream when they saw him.

The leader banked steeply and climbed upward toward him. The others gazed, swung sharply, and came after him, spreading out as they came. And Bell, after one instant's grim debate, went into a maple leaf dive for the jungle below him. The others dived madly in his wake. He heard a sharp, tearing rattle. A machine-gun. He saw the streaks of tracers going very wide. Gunfire in the air is far from accurate. A machine-gun burst from a hundred yards, when the gun has to be aimed by turning the whole madly vibrating ship, is less accurate than a rifle at six hundred, or even eight. Most aircraft duels are settled at distances of less than a hundred yards.

It was that fact that Bell counted on. With a motor that might go dead at any instant and a load of passengers and gas at least equaling that of any of the other ships, mere flight promised little. The other ships, too, were armed, at any rate the leader was, and Bell had only small arms at his disposal. But a plane pilot, stunting madly to dodge tracer bullets, has little time to spare for revolver work.

* * * * *

Bell had but one advantage. He expected to be killed. He looked upon both Paula and himself as very probably dead already. And he infinitely preferred the clean death of a crash to either the life or death that Ribiera would offer them. He flattened out barely twenty yards above the waving branches that are the roof of the jungle. He went scudding over the tree tops, rising where the jungle rose, dipping where it dropped, and behind him the foliage waved wildly as if in a cyclone.

The other planes dared not follow. To dive upon him meant too much chance of a dash into the entrapping branches. One plane, indeed, did try it, and Bell scudded lower and lower until the wheels of the small plane were spinning from occasional, breath taking contacts with the feathery topmost branches of jungle giants. That other plane flattened out not less than a hundred feet farther up and three hundred yards behind. To fire on him with a fixed gun meant a dive to bring the gun muzzle down. And a dive meant a crash.

* * * * *

A stream flashed past below. There was the glitter of water, reflecting the graying sky. A downward current here dragged at the wings of the plane. Bell jerked at the stick and her nose came up. There was a clashing, despite her climbing angle, of branches upon the running gear, but she broke through and shot upward, trying to stall. Bell flung her down again into his mad careering.

It was not exactly safe, of course. It was practically a form of suicide. But Bell had not death, but life to fear. He could afford to be far more reckless than any man who desired to live. The plane went scuttling madly across the jungle tops, now rising to skim the top of a monster ceiba, now dipping deliberately.

The three pursuing planes hung on above him helplessly while the short, short twilight of the tropics fell, and Bell went racing across the jungle, never twenty feet above the tree top and with the boughs behind him showing all the agitation of a miniature hurricane. As darkness deepened, the race became more suicidal still, and there were no lighted fields nearby to mark a landing place. But as darkness grew more intense, Bell could dare to rise to fifty, then a hundred feet above the tops, and the dangers of diving to his level remained undiminished. And then it was dark.

* * * * *

Bell climbed to two hundred feet. To two hundred and fifty. With more freedom, now, he could take one hand from the controls. He could feel the menace of the tumultuously roaring motors in his wake, but he was smiling very strangely in the blackness. He reached inside his flying suit and tore away the front of his shirt. He reached down and battered in the top of one of the five gallon gasoline tins in the cockpit with the barrel of his revolver. He stuffed the scrap of cloth into the rent. It was wetted instantly by the splashing. Another savage blow, unheard in the thunder of the motor. In the peculiarly calm air of the cockpit the reek of gasoline was strong, but cleared away. And Bell, with the frosty grim smile of a man who gambles with his life, struck a light. The cloth flared wildly, and he reached his hands into the flame and heaved the tin of fuel overside.

The cloth was burning fiercely, and spilled gasoline caught in mid-air. A fierce and savage flame dropped earthward. Spark on the cloth, and the cloud of inflammable vapor that formed where the leaking tin fell plummetlike, carried the flame down when the wind of its fall would have blown it out.

The following planes saw a flash of light. They saw a swiftly descending conflagration tracing a steep arch toward the tree tops. They saw that flaming vanish among the trees. And then they saw a vast upflaring of fire below. Flames licked upward almost to the tree tops....

Bell looked back from two thousand feet. Wing-tip lights were on, below, and disks of illumination played upon the roof of the jungle above the fire. The three planes were hovering over the spot. But a thick dense column of smoke was rising, now. Green things shriveling in the heat, and dried and rotted underbrush. Altogether, the volume of smoke and flame was very convincing evidence that an airplane had burst into flame in mid-air and crashed through the jungle top to burn to ashes beneath.

* * * * *

But Bell climbed steadily to five thousand feet. He cut out the motor, there, and in the shrieking and whistling of wind as the plane went into a shallow glide, he spoke sharply.

"Paula?"

"I am all right," she assured him unsteadily. "What now?"

"There's a seat pack under you," said Bell. "It's a parachute. You'd better put it on. God only knows where we'll land, but if the motor stops we'll jump together. And I think we'll have to jump before dawn. This plane won't fly indefinitely. There's just one chance in a million that I know of. There'll be a moon before long. When it comes up, look for the glitter of moonlight on water. With the wing-tip lights we may—we may—manage to get down. But I doubt it."

He moved his hand to cut in the motor again. She stopped him.

"If we head south," she said unsteadily, "we may reach the Paraguay. It is perhaps two hundred miles, but it is broad. We should see it. Perhaps even the stars...."

"Good work!" said Bell approvingly. "Nils desperandum! That's our motto, Paula."

He swung off his course and headed south. He was flying high, now, and an illogical and incomprehensible hope came to him. There was no hope, of course. He had had, more than once, a despairing conviction that the utmost result of all his efforts would be but the delaying of their final enslavement to The Master, whose apparent impersonality made him the more terrible as he remained mysterious. So far they seemed like struggling flies in some colossal web, freeing themselves from one snaring spot to blunder helplessly into another.

But the moon came up presently, rounded and nearly full. The sky took on a new radiance, and the jungle below them was made darker and more horrible by the contrast.

And when there were broad stretches of moonlit foliage visible on the rising slopes beneath, Bell felt the engine faltering. He switched on the instrument board light. One glance, and he was cold all over. The motor was hot. Hotter than it had ever been. The oil lines, perhaps the pump itself....

* * * * *

Paula's hand reached back into the glow of the instrument board. He leaned over and saw her pointing. Moonlight on rolling water, far below. He dived for it, steeply. The wing-lights went on. Faint disks of light appeared far below, sweeping to and fro with the swaying of the plane, bobbing back and forth.

It seemed to Bell that there had been nothing quite as horrible as the next minute or two. He felt the over-heated, maltreated motor laboring. It was being ruined, of course—and a ruined motor meant that they were marooned in the jungle. But if it kept going only until they landed. And if it did not....

White water showed below in the disks of the landing lights' glow. It tumbled down a swift and deadly raudal—a rapid. And then—black, deep water, moving swiftly between tall cliffs of trees.

Bell risked everything to bank about and land toward the white water. The little plane seemed to be sinking into a canyon as the trees rose overhead on either side. But the moonlit rapid gave him his height, approximately, and the lights helped more than a little.

* * * * *

He landed with a terrific crash. The plane teetered on the very verge of a dive beneath the surface. Bell jerked back the stick and killed the engine, and it settled back.

A vast, a colossal silence succeeded the deafening noise of twelve cylinders exploding continuously. There were little hissing sounds as the motor cooled. There was the smell of burnt oil.

"All right, Paula?" asked Bell quietly.

"I—I'm all right."

The plane was drifting backward, now. It spun around in a stately fashion, its tail caught in underbrush, and it swung back. It drifted past cliffs of darkness for a long time, and grounded, presently, with a surprising gentleness.

"Do you know," said Bell dryly, "this sort of thing is getting monotonous. I think our motor's ruined. I never knew before that misfortunes could grow literally tedious. I've been expecting to be killed any minute since we started off, but the idea of being stuck in the jungle with a perfectly good plane and a bad motor...."

He fished inside his flying suit and extracted a cigarette. Then he lit it.

"Let's see.... We haven't a thing to eat, have we?"

* * * * *

There was a little slapping noise. Bell became suddenly aware of a horde of insects swarming around him. Smoke served partially to drive them off.

"Look here," he said suddenly, "we could unfold a parachute and cover the cockpits for some protection against these infernal things that are biting me."

"We may need the parachute," said Paula unsteadily. "Does—does that smoke of yours drive them away?"

"A little." Bell hesitated. "I say, it would be crowded, but if I came up there, or you here...."

"I—I'll come back there," she said queerly. "The extra cans of gasoline here...."

She slipped over the partition, in the odd flying suit which looks so much more odd when a girl wears it. She settled down beside him, and he tried painstakingly to envelope her in a cloud of tobacco smoke. The plague of insects lessened.

There was nothing to do but wait for dawn. She was very quiet, but as the moon rose higher he saw that her eyes were open. The night noises of the jungle all about them came to their ears. Furtive little slitherings, and the sound of things drinking greedily at the water's edge, and once or twice peculiar little despairing small animal cries off in the darkness.

* * * * *

The jungle was dark and sinister, and all the more so when the moon rose high and lightened its face and left them looking into weird, abysmal blackness between moonlit branches. Bell thought busily, trying not to become too conscious of the small warm body beside him.

He moved, suddenly, and found her fingers closed tightly on the sleeve of his flying suit.

"Frightened, Paula?" he asked quietly. "Don't be. We'll make out."

She shook her head and looked up at him, drawing away as if to scan his face more closely.

"I am thinking," she said almost harshly, "of biology. I wonder—"

Bell waited. He felt an intolerable strain in her tensed figure. He put his hand comfortingly over hers. And, astoundingly, he found it trembling.

"Are all women fools?" she demanded in a desperate cynicism. "Are we all imbeciles? Are—"

Bell's pulse pounded suddenly. He smiled.

"Not unless men are imbeciles too," he said dryly. "We've been through a lot in the past two days. It's natural that we should like each other. We've worked together rather well. I—well"—his smile was distinctly a wry and uncomfortable one—"I've been the more anxious to get to some civilized place where The Master hasn't a deputy because—well—it wouldn't be fair to talk about loving you while—" he shrugged, and said curtly, "while you had no choice but to listen."

* * * * *

She stared at him, there in the moonlight with the jungle moving about its business of life and death about them. And very, very slowly the tenseness left her figure. And very, very slowly she smiled.

"Perhaps," she said quietly, "you are lying to me, Charles. Perhaps. But it is a very honorable thing for you to say. I am not ashamed, now, of feeling that I wish to be always near you."

"Hush!" said Bell. He put his arm about her shoulder and drew her closer to him. He tilted her face upward. It was oval and quite irresistibly pretty. "I love you," said Bell steadily. "I've been fighting it since God knows when, and I'm going to keep on fighting it—and it's no use. I'm going to keep on loving you until I die."

Her fingers closed tightly upon his. Bell kissed her.

"Now," he said gruffly, "go to sleep."

He pressed her head upon his shoulder and kept it there. After a long time she slept. He stirred, much later, and she opened her eyes again.

"What is it?"

"Damn these mosquitos," growled Bell. "I can't keep them off your face!"

CHAPTER X

For four hours after sunrise Bell worked desperately. With the few and inadequate tools in the plane he took apart the oiling system of the motor. It was in duplicate, of course, like all modern air engines, and there were three magnetos, and double spark plugs. Bell drained the crankcase beneath a sun that grew more and more hot and blistering, catching the oil in a gasoline can that he was able to empty into the main tanks. He washed out innumerable small oil pipes with gasoline, and flushed out the crankcase itself, and had at the end of his working as many small scraps of metal as would half fill a thimble. He showed then to Paula.

"And the stars in their courses fought against Sisera," he quoted dryly. "Any one of these, caught in just the right place, would have let us down into the jungle last night."

She smiled up at him.

"But they didn't."

"No.... God loves the Irish," said Bell. "What's that thing?"

Paula was fishing, sitting on a fallen tree in the cloud of smoke from a smudge fire Bell had built for her. She was wearing the oily flying suit he had found in the shed with the plane, and had torn strips from her discarded dress to make a fishing line. The hook was made out of the stiff wire handle of one of the extra gasoline tins. "Hook and leader in one," Bell had observed when he made it.

* * * * *

He was pointing to a flat bodied fish with incredible jaws that lay on the grass, emitting strange sounds even in the air. It flapped about madly. Its jaws closed upon a stick nearly half an inch thick, and cut it through.

"It is a piranha," said Paula. "The same fish that bit your hand. It can bite through a copper wire fastened to a hook, but this hook is so long...."

"Pleasant," said Bell. Something large and red passed before his eyes. He struck at it instinctively.

"Don't!" said Paula sharply.

"Why?"

"It's a maribundi wasp," she told him "And its sting.... Children have died of it. A strong man will be ill for days from one single sting."

"Still more pleasant," said Bell. "The jungle is a charming place, isn't it?" He wiped the sweat off his face. "Any more little pets about?"

She looked about seriously.

"There." She pointed to a sapling not far distant. "The palo santo yonder has a hollow trunk, and in it there are usually ants, which are called fire-ants. They bite horribly. It feels like a drop of molten metal on your flesh. And it festers afterwards. And there is a fly, the berni fly, which lays its eggs in living flesh. The maggot eats its way within. I do not know much about the jungle, but my father has—had a fazenda in Matto Grosso and I was there as a child. The camaradas told me much about the jungle, then."

Bell winced, and sat down beside her. She had Ribiera's pearl handled automatic within easy reach. She saw him looking at it.

"I do not think there is any danger," she said with a not very convincing smile, "but there are cururus—water snakes. They grow very large."

"And I asked you to fish!" said Bell. "Stop it!"

* * * * *

She hauled the line ashore, with a flapping thing on the end of it. Bell took the fish off and regarded her catch moodily.

"I'd been thinking," he said moodily, "that Ribiera suspects we're dead. I'd been envisioning ourselves as marooned, yes, but relatively safe as long as we were thought to be dead. And I'd thought that if we lived a sort of castaway existence for a few weeks we'd be forgotten, and would have a faint chance of getting out to civilization without being noticed. But this...."

"I will stay," she said steadily. "I will stay anywhere or go anywhere, with you."

Bell's hand closed on her shoulder.

"I believe it," he said heavily. "And—if you noticed—I had been thinking of letting down the Trade. I'd been thinking of not trying to fight The Master any longer, but only of getting you to safety. In a sense, I was thinking of treason to my job and my government. I suspect"—he smiled rather queerly—"I suspect we love each other rather much, Paula. I'd never have dreamed for anyone else. Go over to the plane and don't fish any more. I'll rustle the food for both of us."

She stood up obediently, smiling at him.

"But kill that piranha before you try to handle it," she advised seriously.

Bell battered the savage thing until it ceased to move. He picked it up, then, and sniffed the air. Paula had been in a cloud of acrid smoke. She could not have detected the taint in the air he discovered. He went curiously, saw a broken branch overhead, and then saw something on the ground.

* * * * *

He came back to the plane presently, looking rather sick.

"Give me one of the machetes, Paula," he said quietly. "We brought them, I think."

"What is the matter?"

He took the wide-bladed woods knife.

"A man," he said, nauseated. "He either fell or was thrown from somewhere high above. From a plane. He was United States Secret Service. There's a badge in his clothes. Don't come."

He went heavily over to the spot beyond the smudge fire. He worked there for half an hour. When he came back there were earth stains on his hands and clothing, and he carried a very small brown package in his hand.

"He had a report ready to send off," said Bell grimly. "I read it. It's in code, of course, but in the Trade...."

He set to work savagely on the engine, reassembling it. As he worked, he talked in savage, jerky sentences.

"The Service man at Asuncion. One of the seven who vanished. He'd learned more than we have. He was caught—poisoned, of course—and pretended to surrender. Told a great deal that he shouldn't, in order to convince The Master's deputy. The key men in nearly every republic in South America are in The Master's power. Paraguay belongs to him, body and soul. Bolivia is absolutely his. Every man of the official class from the President down knows that he has two weeks or less of sanity if The Master's deputy shuts down on him—and he knows that at the crook of the deputy's finger he'll be assassinated before then. If they run away, they go murder mad. If they stay, they have to obey him. It's hellish!"

* * * * *

He stopped talking to make a fine adjustment. He went on, somberly.

"Chile's not so bad off, but the deputy has slaves nearly everywhere. Ecuador—well, the President and half of Congress have been poisoned. The man I found was trying to get a sample of the poison for analysis. He'd learned it was unstable. Wouldn't keep. The Master has to send fresh supplies constantly all over the continent. That accounts for the deputies remaining loyal. If The Master had reason to suspect them, he had only to stop their supply.... They couldn't stock up on the deadly stuff for their own use. So they're as abjectly subject to The Master as their slaves are to them. No new slaves are to be made in Paraguay or Bolivia, except when necessary. It's believed that in six months the other republics will have every influential man subjected. Every army officer, every judge, every politician, every outstanding rich man.... And then, overnight, South America will become an empire, with that devil of a Master as its overlord."

He lifted one of the oil pumps in place and painstakingly tightened the bolts that held it.

"Picture it," he said grimly. "Beasts as viceroys, already taking their pleasure. Caligulas, Neros, on viceregal thrones all over the continent.... And every man who shows promise, or shows signs of honor or courage or decency, either killed or sent mad or...."

* * * * *

Paula was watching his face closely.

"I think," she said soberly, "that there is something worse."

Bell was silent for an instant.

"For me," he said bitterly, "it is. Before The Master dares to make his coup public, he must be sure that there will be no foreign interference. So, he must establish a deputy in Washington. A relatively few chosen men, completely enslaved, could hold back our Government from any action. Leaders in Congress, and members of the Cabinet, working, in defense of The Master because his defeat would mean their madness.... He would demand no treason of them at first. He would require simply that he should not be interfered with. But his plans include the appointment of deputies in the United States later on. I don't think he can subdue America. I don't think so. But he could—and I think he would—send whole cities mad. And if you think of that...."

* * * * *

He was silent, working. A long, long time later he swung on the propeller. The motor caught. He throttled it down and watched it grimly. The motor warmed up to normal, and stayed there.

"It will run," he said coldly. "Those two plugs in the crankcase may come out at any time. I've tightened them a little. They'd worked loose from the vibration. But—well.... That Service man was heading for Asuncion. He'd been found out. They probably shot him down in mid-air after he'd gotten away. His plane may be crashed anywhere in the jungle within a mile or so. And I've two bearings on the fazenda where Ribiera went, now. One from Asuncion through here and one from Rio. I want to go back there to-night and dump burning gasoline on the buildings, to do enough damage to disorganize things a little. Then I'm going to try to make it to a seaport. We can stow away, perhaps."

He shut off the motor.

"We'll start at dusk. There'll be lights there. This report says it's nearly a city—of slaves. We want the darkness for our getaway."

Paula looked at the sky.

"We have three hours," she said quietly. "Let us cook and eat. You must keep up your strength, Charles."

She said it in all seriousness, with the air of one who has entire confidence and is merely solicitous. And Bell, who knew of at least three excellent reasons why neither of them should survive until dawn—Bell looked at her queerly, and then grinned, and then took her in his arms and kissed her. She seemed to like it.

And they lunched quite happily on piranha and pacu—which is smaller—and drank water, and for dessert had more piranha.

* * * * *

The long afternoon wore away slowly. It was hot, and grew blistering. Insects came in swarms and tormented them until Bell built a second and larger smudge fire. But they fastened upon his flesh when he went out of its smoke for more wood.

They talked, as well as they could for smoke, and looked at each other as well as they could for smarting eyes. It was not at all the conventional idea of romantic conversation, but it was probably a good deal more honest than most, because they both knew quite well that their chance of life was small. A plane whose motor was precariously patched, flying over a jungle without hope of a safe landing if that patched-up motor died, was bad enough. But with the three nearest nations subservient to The Master, whose deputy Ribiera was, and all those nations hunting them as soon as they were known to be yet alive....

"Would it not be wise, Charles," asked Paula wistfully, "just for us to try to escape, ourselves, and not try—"

"Wise, perhaps," admitted Bell, "but I've got to strike a blow while I can." He was staring somberly at the little plane, fast upon a mud bank, with the tall green jungle all about. "The deputies and all their slaves have their lives hanging by a thread—the thread of a constant supply of the antidote to the poison that's administered with the antidote. The deputies—Ribiera, for instance—don't realize that. Else they wouldn't dare do the things they do. But let them realize that the thread can be broken, and what their slaves would do to them before they all went mad.... You see? Let them learn that a blow has been struck at the center of all the ghastly thing, and they'll be frightened. They'll be close to mutiny through sheer panic. And there may be slip-ups."

* * * * *

It was vague, perhaps, but it was true. The subjection of the poisoned men and women was due not only to terror of what would happen if they disobeyed the deputies, but to a belief that that thing would not happen if they did obey. If Bell could do enough damage to the fazenda of The Master to shake the second belief, he would have shaken the whole conspiracy. And a conspiracy that is not a complete success is an utter failure.

It was close to sunset when they heard a droning noise in the distance. Bell went swiftly to the cockpit of the plane and searched the sky.

"Don't see it," he said grimly, "and it probably doesn't see us. We're all right, I suppose."

But he was uneasy. The droning noise grew to a maximum and slowly died away again. It diminished to a distant muttering.

"What say," said Bell suddenly, "we get aloft now? We'll follow that damned thing home. It's going from Asuncion to that place we want to find. This is on that route. Whoever's in it won't be looking behind, and it's close to darkness."

* * * * *

Paula stood up.

"I am ready, Charles."

Bell swung out on the floats and tugged at the prop. The motor caught and roared steadily. While it was warming up, he stripped off the rest of his shirt and tore it into wide strips, and tied the rags in the handles of the gasoline tins in the two cockpits.

"For our bombs," he explained, smiling faintly. "You'll want to wear your chute pack, Paula. You know how to work it? And we'll divide the guns and what shells we have, and stick them in the flying suit pockets."

He made her show him a dozen times that she knew how to pull out the ring that would cause the parachute to open. She climbed into the front cockpit and smiled down at him. He throttled down the motor to its lowest speed and shoved off from the mud bank. Clambering up, while the plane moved slowly over the water under the gentle pull of the slow-moving propeller, he bent over and kissed her.

"For luck," he said in her ear.

The next instant he settled down at the controls, glanced a last time at the instruments, and gave the motor the gun.

* * * * *

The plane lifted soggily but steadily and swept up-stream toward the rolling water of the raudal, which tumbled furiously about an obstacle half of stones and shallows, and half of caught and rotting tree trunks. It rose steadily until the trees dropped away on either side and the jungle spread out on every hand. It rose to a thousand feet and went roaring through the air to northward, while Bell strained his eyes for the plane on ahead.

It was ten minutes or more before he sighted it, winging its way steadily into the misty distance above the jungle. Bell settled down to follow. The engine roared valorously. For half an hour Bell watched it anxiously, but it remained cool and had always ample power. Paula's head showed above the cockpit combing. Mostly she looked confidently ahead, but once or twice she turned about to smile at him.

The sun seemed high when they rose from the water, but as it neared the horizon its rate of descent seemed to increase. They had been in the air for no more than three-quarters of an hour when it was twice its own disk above the far distant hills. Almost immediately, it seemed, it had halved that distance. And then the lower limb of the blaring circle was sharply cut off by the hill crests and the sun sank wearily to rest behind the edge of the world.

It seemed as if a swift chill breeze blew over the jungle, in warning of the night. The trees became dark. A shadowy dusk filled the air even up to where the plane flew thunderously on. And then, quite abruptly, stars were shining and it was night.

* * * * *

Bell remembered, suddenly, and switched on the radio as an experiment. The harsh, discordant dashes sounded in his ears through the roaring of the motor. A beam of short waves was being sent out from his destination. While he was on the direct path the monotonous signals could be heard. When they weakened or died he would have left the way.

But they continued, discordant and harsh and monotonous, while the last faint trace of the afterglow died away and night was complete, and a roof of many stars glittered overhead, and the jungle lay dark and deadly below him.

For nearly half an hour more he kept on. Twice he switched on the instrument board light to glance at the motor temperature. The first time it appeared a little high. The second time it was normal again. But there was little use in watching instruments. If the motor failed there was no landing field to make for.

A sudden faint glow sprang into being, many miles ahead. The pinkish glare of many, many lights turned on suddenly. As the plane thundered on the glow grew brighter. An illuminated field, for the convenience of messengers who carried the poison for The Master to all the nations which were to be subjected.

The glow went out as Bell was just able to distinguish long rows of twinkling bulbs, and he saw the harsher, fiercer glow of floodlights. He reached forward and touched Paula's shoulder. Conversation was impossible over the motor's roar. Her hand reached up and pressed his.

Then he saw other lights. Bright lights, as from houses. Arc lights as from storage warehouses, or something of the sort. A long, long row of lighted windows, which might be dormitories or perhaps sheds in which The Master's enslaved secretaries kept the record of his victims.

* * * * *

The earth flung back the roaring of the little plane's motor. Bell had but little time to act before other planes would dart upward to seek him out. He dived, and the wing tip landing lights went on, sending fierce glares downward. Twin disks of light appeared upon the earth. Sheds, houses, a long row of shacks as if for laborers. A drying field, on which were spread out plants with their leaves turning brown. A wall about it....

"The damned stuff," said Bell grimly.

He swept on. Jungle, only jungle. He banked steeply as lights flicked on and off below and as—once—the wing tip lights showed men running frantically two hundred feet below.

Then a stream of fire shot earthward, and Bell held up his hand and arm into the blast of the slip stream. It blew out the blaze that had licked at his flesh. He stared down. The gas can had left a trailing stream of fluid behind it as it went spinning down to earth. All that stream of inflammable stuff was aflame. The can itself struck earth and seemed to explode, and the trailing mass of fire was borne onward by the wind and lay across a row of thatch-roofed buildings. An incredible sheet of fire spread out. The stuff in the drying yard was burning.

Bell laughed shortly, and flung over another of his flaming bombs, and another, and the fourth....

* * * * *

He climbed for the skies, then, as rectangles of light showed below and planes were thrust out of their lighted hangars. Four huge conflagrations were begun. One was close by a monster rounded tank, and Bell watched with glistening eyes as it crept closer. Suddenly—it seemed suddenly, but it must have been minutes later—flame rushed up the sides of that tank, there was a sudden hollow booming, and fire was flung broadcast in a blazing, pouring flood.

"Their fuel tank!" said Bell, his eyes gleaming in the ruddy light from below. He shut off his landing lights and went upward, steeply. "I've played hell with them now!"

A thousand feet up. Two thousand. Two thousand five hundred.... And suddenly Bell felt cold all over. The instrument board! The motor was hot. Hot! Burning!

He shut it off before it could burst into flames, but he heard the squealing of tortured, unlubricated metal grinding to a stop. He leveled out. It was strangely, terribly silent in the high darkness, despite the roaring of wind about the gliding plane. The absence of the motor roar was the thing that made it horrible.

"Paula," said Bell harshly, "one of those plugs came out, I guess. The motor's ruined. Dead. The ship's going to crash. Ready with your parachute?"

* * * * *

It was dark, up there, save for the glare of fires upon the under surface of the wings. But he saw her hand, encarmined by that glare, upon the combing of the cockpit. A moment later her face. She turned, light-dazzled, to smile back at him.

"All right, Charles." Her voice quavered a little, but it was very brave. "I'm ready. You're coming, too?"

"I'm coming," said Bell grimly. Below them was the city of The Master, set blazing by their doing. If their chutes were seen descending.... And if they were not.... "Count ten," said Bell hoarsely, "and pull out the ring. I'll be right after you."

He saw the slim little black-clad figure drop, plummetlike, and prayed in an agony of fear. Then a sudden blooming thing hid it from sight. Thick clouds of smoke lay over the lights and fires below.

Bell stepped over the side and went hurtling down toward the earth in his turn.

(To be continued)

[Advertisement: ]



The Cavern World

By James P. Olsen



[Sidenote: A great oil field had gone dry—and Asher, trapped far under the earth among the revolting Petrolia, learns why.]

"Impossible! What sort of creatures would they be, that could live two miles beneath the surface of the earth? Surely, Asher, you are joking!"

R. Briggs Johns, mighty power back of Stan-America Oil Corporation, looked at Blaine Asher closely, expecting to see the chief geologist and scientist of the company laugh. But Blaine Asher did not laugh. Serious, his rather thin face grave at he leaned his tall, muscular body above a torsion machine he was adjusting, there was nothing to indicate he had the faintest idea of a joke.

"Why damn it, Asher!" Johns insisted wrathfully, "you don't really mean that. And"—he took a nervous turn around the laboratory—"if such a wild thing were possible, what has that to do with our trouble? You haven't led me on to spend a million dollars drilling a thirty-six-inch hole, just so you could test a fantastic theory?"

"You know better than that." Asher wiped his hands and leaned against a table. Johns, looking into the cool gray eyes of the man before him, did know better. Blaine Asher was more than just a geologist or scientist. Well he might be termed a master geo-metallurgist. Johns nodded, wiping beads of perspiration from his brow.

"You say impossible—and want to know how those creatures cause this field, the largest oil field in the world, to start going bone dry over night. All right:

"Remember how you laughed when I told you that oil would some day be mined instead of pumped or flowed from the earth? You couldn't see how one central shaft could be sunk, then tunnels run back underneath the oil strata, tapping the sand from the bottom and letting the oil run down to be pumped out one shaft. Yet, that way, we would get all the oil, instead of the possible one-eighth of the total amount as we get by present methods.

"Now, you have seen that done. And you said that was impossible."

* * * * *

"Yes," Johns objected, "but those test wells we mined were only a few hundred feet deep. Wells in this field are eight thousand feet deep! Think of the heat, man! You can't do it. And as for people—"

"Your great field has suddenly gone dry, almost in a month's time," Asher stopped him. "What is happening here can happen elsewhere. Only, formations in this field are more suited to there being life—or something—below us. Stan-America is going broke. Many others have already gone broke. Still, that oil couldn't have gotten away.

"As for heat—yes, we know that oil is hot when it comes up from the oil sand at eight thousand feet, or from ordinary wells at three to six thousand feet. But"—Asher lit a cigarette and inhaled deeply—"gas coming out of the same well is cold! So cold it forms frost inches thick on pipes and tanks.

"Rock pressure—the pressure of the earth—forcing up the gas, causes that. Why couldn't that same pressure cool great caverns below the granite cap below the oil sands? It could. For that matter, I know that same pressure will generate useful power. I'll show you that in a minute."

"All right!" Johns chewed his cigar almost savagely. "Say, then, that you can work down there, nearly two miles underground; granted that we can tunnel from beneath the sands and pump more oil from one central shaft than we now do from fifty wells—what has that to do with this tosh about a race of people?"

"They are not people, perhaps." Asher grinned at the "there, I've stuck you!" look on Johns' face. "Let's say, rather, creatures. Have you ever met Lee Wong, the great Chinese scientist, or his Russian geological collaborator, Krenski? No?

* * * * *

"Well, I have. I met them in Paris in 1935—fire years ago. They're brilliant men, and they've prepared some wonderful papers. Brilliant, I said: they are also dangerous. They claim, you know, that the fossils we now drill up come from a lost race—people who went into the earth while man, like us, was coming up onto the earth from the water. Some claim those fossils have been on the surface at one time, and were silted over. But eight thousand feet is a lot of silt, Johns: ever thought of that?"

"Good God!" Johns gasped hoarsely. "You almost make me believe you are right. But, supposing there is such a race of things—what will you do?"

"This." Asher drew back a curtain that was stretched across one end of the laboratory. "You know I was working on a cage in which to descend into that eight-thousand-foot well you've drilled—the well you're going to use to try and find why this field is suddenly gone dry. This it it."

Johns stared, shook his head wonderingly and stared again. Before him, ready to be transported to the well that was larger than any ever drilled before, stood what Blaine Asher called his Miner, for want of a better name.

A thick steel tube, it was. Twelve feet long and large enough around that a man might stand inside of it. The top was welded on in much the manner a top is welded on an ordinary hot-water heater, and had connections for hose in it. At the height of a man's eyes heavy windows were set in, and in one side was a door just large enough to admit a man's body. This door sealed tight the minute it closed.

"It looks like—like some sort of a deep sea diving outfit," Johns said as he walked around the braces that held the Miner upright. "But all those gadgets inside and on the bottom—?" He indicated the strange instruments that could be seen when the door was opened, and the queer glass tubes that projected from the very bottom.

* * * * *

"Pressure-power units—my own invention," Asher told him. "For ten years I've been working on this. I knew that some day I would want to explore the oil caverns beneath the earth, so I made ready.

"As I told you, rock pressure, or earth pressure, is a tremendous thing. It is power, so I figured how to use it. Under artificial pressure, I have tried out my Miner and its equipment.

"Those tubes sticking from the bottom contain something you are familiar with: non-burning and non-explosive helium gas. I have discovered a way, by their use, to create power that will melt away rock or iron—literally dissolve it into nothing! Not in an hour, or minutes. In seconds, Johns!

"The pressure of the earth acts as my generator. The pressure action on the filaments of platinum, and several compositions I have no time to explain now, causes heat. Call it friction of compressed air, if you wish. As neon gases carry an electric spark, so does this helium carry the power generated by earth pressure. The pressure below earth acts on the delicate coils and points of my generator. This bit of power is carried into the helium tubes, and by a system of vacuum power, is increased millions of times. Thus, the tiny spark of a cigar lighter would electrocute a hundred men!"

"I—you mean somewhat like a violet ray is increased in the lightning tubes?" Johns strove to grasp the foundation of the thing.

"Yes, the foundation of it all—with the earth's pressure the power motive," Asher nodded. "So, after my Miner is on the bottom of our well, I can burn—or dissolve—a room as large as this laboratory in a few minutes. The whole thing is no mystery after you learn it—not nearly so much as radium, or radio, was. Merely creating a spark of electricity and fanning it through a vacuum and a conductor of massed gases."

"But"—Johns had unconsciously dropped his voice to a whisper—"what of these strange creatures? How would you deal with them? Damn it, Asher, I think I'm beginning to believe this nutty idea of yours. Any man who can generate power with the pressure of air as it is packed by earth must know what he is talking about!"

"I have but one protection against anything down there that tries to harm me," Asher said simply. "That is this—see?"

* * * * *

What he held up looked like an old-fashioned six shooter. It was fitted with a platinum-sealed box in the place where a cylinder would have been. The barrel looked like some queer, blue glass.

"Do you see that test tube?" Asher pointed to a glass tube on a table a few feet away. "Now watch."

He pressed a tiny ratchet under his thumb. A snapping, buzzing noise filled the laboratory. Johns gave an exclamation of wonder and awe. Quickly, the test tube started to melt into a pool of molten glass. Asher increased the pressure of his ratchet trigger. The tube was knocked to the floor.

"Static electricity—always some form of electricity," said Asher grinning at the astonished oil baron. "Conductor coils here," he continued as he tapped the sealed cylinder, "are charged much as a flash-lamp battery. The charged conductors attract the static electricity of the air, and, in a manner similar to the action of the power generator, increase power. There is a slight difference: by turning quick power on my static gun, I can cause the charge to knock down and merely electrocute, as I knocked the half-melted tube from the table."

"I can understand that, a little," Johns sighed profoundly. "It's the same juice that causes a gasoline truck to catch fire if you don't have a ground chain on it somewhere. But, just the same, I claim it's remarkable."

"Not half as remarkable as what I expect to find two miles down when I descend to-morrow." Asher had a dreamy look in his eyes. "I wonder: new ways to get petroleum wealth ... a strange people...."

* * * * *

"Men,"—Asher, a tight-fitting asbestos composition suit covering him from foot to neck, spoke tersely—"when you get me on bottom, stop every bit of machinery, and don't dare pull up until I give the signal. If I'm down there the entire day, all right. But"—he smiled, trying to make light of the danger—"if I don't signal within thirty-six hours, pull up anyhow."

From the bull-wheels of the drilling rig Asher spooled out some of the air-hose cable through which air blown over ice would be pumped into the Miner; then when the long steel cylinder was over the hole and ready, he turned to the company officials and government scientists and engineers around him in the boarded-up derrick.

"Possibly I can get a survey in an hour. Perhaps I'll have to come back to the surface and make adjustments to my equipment. That remains to be seen.... Now, let's get low."

He adjusted a helmet over his head. It looked much like the helmet worn by a sea diver, except that it had no connecting hose for air. The windows in the helmet, which contained pressure lights, worked on the same principle as the disintegrating rays of the Miner. When Asher turned the ratchet that set the little pressure machine into motion, a violet tinged green ray of great lighting power shot out and increased, by weight of air, or atmosphere beneath the earth, the power of one tiny spark a million times.

Without ceremony or farewell, Asher crawled inside his tube. The door was closed and he fastened it from inside. For a moment, wild panic assailed him. But he fought it off, becoming again less the feeling human and more the cold calculator of advanced science. The light from outside, coming in through the windows of the Miner, was shut off. The long steel cage clanked against the sides of the special casing in the well, and Blaine Asher was on his trip into a lower world never before visited by man.

That was what Asher believed. But, had he known what waited for him, two miles into the bowels of the earth....

* * * * *

At five hundred feet, the descent stopped, giving him time to adjust himself to the pressure change. The gas and oil had been eased out of the hole. That is, the casing had been run on through the producing strata, shutting it off. Asher signaled by buzzer, and a stream of the ice-washed air flowed down to him.

Three thousand feet! Six thousand feet! More than a mile down! Sweat poured from his body in streams, and the air coming into the Miner through the hose did not relieve him. It was hot—almost unbearably so. His ears were roaring. The dark of his tube was relieved as he turned on his pressure lamps. He adjusted the pressure discs over his ears by twisting a thumbscrew on his helmet, and the pounding of his ear-drums ceased.

Gasping, he watched the depth meter in front of him. It did not seem as if he was moving, but the indicator now showed more than seven thousand feet. It moved around slowly and more slowly; trembled at eight thousand—and stopped.

Like the snapping of a man's fingers, the temperature inside the Miner changed. Asher was now fifty feet below the bottom of the oil and gas sands, and if his theory about rock pressure worked.... It was working. Frost was forming on the inside of the Miner!

"I'm right—right—right!" Asher thought, elated, sending his buzzer signal up to those so far above. The icy air through his hose changed to air of normal temperature. He signaled for slack in the lowering cable, then prepared for the greatest test of all.

Cramped, with hardly room to move, he studied his gages. Helium tubes at the proper pressure for compressing the tiny spark of the pressure generator, so it would flare a million times stronger under the action of the vacuum tubes: diamond and cut-glass tubes in the bottom of the Miner, thermoed with layers of quicksilver: everything cleared, everything ready.

* * * * *

His hand shaking, Asher pushed the tiny switch that brought his filament points trembling together under the atmospheric pressure so far underground. A tiny spark danced and throbbed through the tiny glass tube before him, beginning to buzz as it started the circuit of increasing coils, and soon humming and vibrating as the helium and vacuum tubes swelled it to full power. Spark after spark, increased almost beyond imagination, followed one after another. The Miner throbbed and shook.

White-faced, Asher touched the little lever that opened the blasting outlets in the bottom. Almost instantly the Miner dropped a full six inches—went on, down to a foot. Asher, pride of success choking him, pulled the lever hard over, which brought some of the tubes beneath him spreading out, to blast away the earth on each side of him.

He signaled for more and more slack as the depth indicator showed he had burned, or disintegrated, his way down to thirty feet beyond the original bottom of the hole. He was below the bottom of the protecting wall of casing now—at the mercy of the pressure of two miles of earth.

Slowly, setting all his bottom tubes to cutting away on all sides of him, he started hollowing out enough room to step out into. His lights, when he looked through the windows, showed ghostly on earth ten feet on each side of him. Ten more minutes and he had created a room nearly twenty-five feet square—a man-made cave, two miles below the surface.

There was something akin to awe in the feelings of Asher when he opened the little door, crawled out and stood erect. The pressure lamps in his helmet lit up the room he had made. There were no sounds, just a vague, ringing silence.

Then so quickly that it robbed him of his senses, two things happened. A hundred yards away from the well in which he had descended, another well, drilled by another oil company, was shot. Three hundred quarts of nitro-glycerine were set off in the hole.

* * * * *

Asher screamed and clamped his ear discs down tight. It seemed the very gods of thunder were shrieking and raging in his head; every nerve and fiber in his body throbbed and tingled with the hellish vibration.

On his knees, where the shock had thrown him, in darkness beyond description, Asher realized the lights from the Miner no longer shone out. Frantically, he adjusted the small lights in his helmet and got them to sending off their rays again. Then, an icy hand seemed to squeeze his heart, turning his blood to ice-water in his veins. He cursed himself for not foreseeing that some company might shoot a well close by, while he was underground.

He turned. The Miner was all right, but Blaine Asher was trapped! For the walls of the hole below the bottom of the casing had caved. Thirty feet of rock, sand and conglomerate matter were between him and the bottom of the pipe.

He was trapped—two miles below the earth. There was no hope of rescue, the hope that miners feel in deep shafts. There could be no rescue for Asher. No one could get to him. He cried out his horror, fighting to keep from swooning.

The helmet hampered him. He turned on a small pressure lamp attached to the belt at his waist, and chanced taking the helmet off. Dank and nauseous was the air that he breathed, since it no longer came through the filters in his helmet. But it was air that would serve, nevertheless.

A crackling, rumbling sound caused him to turn quickly. Eyes wide, he stared at the long crack that was opening before him.

Asher was between two layers of granite—one layer under him, and another above him, just below the oil sands. Now, as the crack between these two layers widened, he could see it slope downward until it ended in a great cavern that stretched endlessly away beyond the beams of his light.

* * * * *

It wasn't this crack that caused Blaine Asher, an iron-hearted man of science, to choke and sag down to a sitting position, his knees refusing to support him. No—it was the terrible, Godless, unbelievable Things that scurried around in the smooth rock hall that stretched away into the cavern.

Frozen with soul-chilling fear, Asher stared with eyes that bulged. What were they? Spawned neither of God nor Satan—what could they be? Black-skinned—or was it skin?—like rubber, with round bodies, like black basket balls inflated to triple size; bodies that seemed to ripple, distort, swell and contract with life within life.

Short, foot-long stems that must have been legs, ending in round balls that served as feet, no doubt. Tentacles, Asher would have called them, six feet in length, thick as mighty cables and dotted with suckers like the tentacles of an octopus. And heads—Asher gagged and vomited!

Not heads. Just masses of the black body substance as large as the two fists of a man. In each head was a crooked black gash for a mouth. There were no eyes that Asher could see. Yet, these Things seemed to see one another, and emitted strange, chill, squeaking sounds!

As Asher watched, the Things sensed his presence. A half hundred of them rose and started toward him. They did not walk, nor did they crawl. Undulating, contorting strangely, they came on with incredible speed, long tentacles waving before them; slithering on the rocky floor of the cavern; making those odd squeaking noises.

As they neared him, Asher sprang to his feet, backing up against the pile of cavings beside the Miner. A long tentacle whipped out and wrapped around his leg. A short, snout-tentacle quivered toward his face. There was strength beyond imagining in the grip on him.

* * * * *

With an almost animal snarl the man from the earth's surface moved to protect himself from these creatures, surely of the lowest living order. He grabbed into the pocket of his loose asbestos composition suit, and his fingers closed comfortingly around the static gun.

He aimed it, and the Thing gripping him was hurled back upon the others. Crackling, snapping viciously, the charges of electricity that were drawn from the very earth increased in the gun and spumed out like lightning bolts. The Things squeaked excitedly and surged forward. Asher's finger pulled the ratchet trigger full force, and like dew before a strong shaft of sunlight, the gruesome Things were knocked away.

Hating the sight, Asher changed the charge of his gun, cutting the size of the path the volts covered, thereby increasing the potency of the discharge. The piled bodies sizzled, and to Asher's nose came a sulphurous smell. Then, there was nothing at all....

Sick, he put the gun back into the deep pocket and leaned on the wall. He turned around again to the pile of cavings that barred his way from the surface, and dug like a madman with his bare hands. The Miner was weighed down, and he could not use it anyhow. The blasting tubes were on the bottom, and could not be shifted to the top.

Suddenly he stopped his crazed work, raised his head and listened. "My God!" he gasped hoarsely, "am I stark mad?" He thought he must be, for the voice of a human being came to his ears.

"You will be pleased, Blaine Asher, to turn around! And do not make any foolish moves, I warn you."

"Lee Wong! Krenski!" Asher turned, face to face with the super-scientists of whom he had spoken to R. Briggs Johns the day before. Asher shook his head. More of the terrible dream, this meeting two humans down in the earth's core.

* * * * *

"Most right, honorable Asher." Lee Wong bowed mockingly. He and Krenski were garbed in loose-fitting garments of much the same style as Asher. In their hands, they carried static guns. Not the small gun, such as Asher had concealed in his pocket. More like heavy air drills, they were.

Asher frowned at the lamps they carried. He knew by the dazzling action of the rays that they were pressure lamps. But they gave off much better light than those of his own invention. They had gone him one better there.

"Did—did you see them?" Asher gulped. "And how—how did you get down here? Tell me!" He took a step toward Lee Wong, intending to lay his hand on the Chinaman, to make sure he was live flesh and blood, and not a figment of his disordered brain.

"Stand where you are!" Lee Wong snapped. He held the heavy static gun up and Asher felt a light charge tingle his body. "Those Things of which you speak—I assume you mean the Petrolia. Ah, yes, we see them. Every day, we see them. For us they work. They work, my dear Blaine Asher, tapping upward into the oil sands; sands that are burial places of countless millions of generations of Petrolia; of lost races that once ruled supreme over these underground worlds.

"How simple, to take the oil from below—the oil you want so much above. Someone must do the work. I and Krenski found the Petrolia ready and willing. Being creatures of feeling, with little sense, we were able to bend their dying wills to do our work. You see, we made them feel we would save them, a dying race, from extinction! They do our bidding."

Asher was bewildered by the enormity of the thing. "You mean these Things you have called Petrolia actually work for you? And that you saved them from becoming extinct?"

* * * * *

"Exactly," Lee Wong nodded, seeming to be enjoying himself. "Like humans of the surface, Petrolia live on the dead. I mean, wherever we get our living food from the earth, we plant our dead back in that earth. Petrolia are spawned in beds of petroleum. Just as eels seek deep water to lay their eggs, so do Petrolia go to the oil strata to spawn future tribes.

"When we pump out the oil, they have no—shall we say "hatching?"—beds. But now, by tapping and bringing down the oil, we have assured them more spawning pits. They will increase, and we have made them sense it. For that matter, the very oil they breed in, gives them sustenance. That is why they are black fleshed and blooded, and have suckers instead of mouths, as a black man is black through ages beneath hot suns.

"It's easy for us, who are wiser than other men, to figure what oilfield might contain such people. We have a rapid elevator connecting us to the surface. And—"

"Then," Asher almost shouted, "I'm not trapped!"

"No?" Lee Wong wrinkled his forehead quizzically. "You should realize that we cannot allow you to go back to the surface—alive, or any other way. We intend to increase the Petrolia, spreading them to other underground, yet uninhabited worlds. You would spoil that.

"No, you will never return to the surface. They cannot haul your tube to the top, so they will think you perished in it. And"—Lee Wong shrugged—"it might have been better if you had, Mr.—"

"I wouldn't!" the yellow man snarled. He rolled the ratchet of his static gun and Asher was hurled to the floor by the heavy shock. Wisely, he stood up, keeping his hands well away from the pocket in which his own gun rested. He doubted whether his little static gun could compete with the guns of the others, but it was something. They had not thought to search him—perhaps they might not. It was his only hope.

* * * * *

Lee Wong bowed low again, motioning Asher to go ahead. "Now you shall see what we have done. We are proud, and we know you can appreciate our workings. You will be glad to learn why we do as we are doing; you will be intrigued as a fellow scientist. Then, so sad to say, you must perish for having gained that very knowledge."

Asher shrugged, and through half-closed lids he eyed Lee Wong and the rather small, slender Krenski, of the high brow and large head. Then he walked ahead of them. Head up, shoulders back, he walked carelessly down the wide hall—a hall that led into the main cavern of that underground empire.

It was large—fully a hundred feet in a rough square. Not fifteen feet from floor to ceiling at any point, it followed the course of the two layers of granite between which it was sandwiched. Other long halls, or crevices, ran in every direction out of this main cavern. In the walls, in niches and cracks, the superior pressure lamps had been placed, throwing a bright, eery light over it all.

Asher recoiled suddenly at the sight of hundreds of Petrolia that swarmed the hallways, and they seemed to sense another presence beside that of Lee Wong or Krenski. A choked, gurgling sound came from the Chinaman, and they disappeared down the halls, squeaking angrily as they went.

"Our control room," explained Lee Wong waving his hand about him. He pointed to a dozen twenty-four inch pipe-lines that ran along the low ceiling, coming from as many different halls into the room, but all going out the same large hall, larger than the rest. "There are the arteries of our system. There is the oil that is so—shall we say strangely?—missing in your wells." He smiled, a taunting, mocking light in his eyes.

"You well understand how we do it. Above us, just below the oil strata, is a steel, trough-shaped roof. The oil, tapped from below, drains into these, and then into these pipe-lines. If we were working from above, now, we would run it to a central shaft, and pump it out. We do not want it on the surface, however."

* * * * *

"Then why in the name of hell do you want it?" Asher barked, a tense note of anger in his voice. "And what do you do with it?" These two were humans. At least, they were in man-form, if not in feeling. And the Petrolia could be handled. Asher was getting mad, and his fear ebbed.

"Come." Lee Wong led the way under the pipe-lines, down the large hall. Krenski, his heavy static gun ready, walked at Asher's back. They came out into another cavern that stretched beyond the powerful lights. The sound of their voices echoed like thunder of the drums of Thor, and Asher realized this cavern might stretch away in Stygian blackness for hundreds of miles.

Asher marveled, for the floor of this cavern dropped at least five feet below the level of the control room or incoming hallways, forming a natural reservoir. A reservoir for the big streams of oil that were pouring into it from the pipe-lines.

The rumble of the oil as it came in and splashed out in a never-ending stream, and the rumble of the oil streams above them as the precious fluid flowed down into the plated drain roof, sounded like the tramp of the weary feet of the damned, as it echoed back and forth across the mighty cavern.

"Our storage." Lee Wong stood at the edge and explained. "Also, as you may see, a concentration incubator, or spawning bed and food storage for our Petrolia."

Blaine Asher looked again at the rippling oil at his feet. He choked brokenly and stepped back a pace. For the oil near the bank was alive! It rippled and splashed, teeming with life. By the strange alchemy of breeding in oil and living on oil as man lives on bread, that lake of oil was a mass of growing Petrolia. Millions—yes, countless billions—of them! Hideous, foul Things that would be turned loose with the rest in that nightmare world—that would be taken to other buried worlds to start new races.