by Unknown
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 Asunción. 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 w
ent 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.