"And I've thought of something. It worried me, before, because sometimes if a man's shot he merely relaxes all over. So while we're at the flying field I'm going to be holding back the triggers of these guns with my thumbs. I don't have to pull the trigger at all – just let go and they'll go off. It isn't so fine an adjustment as I had just now, but it's safer for you as long as you behave. And you might urge your chauffeur to be cautious. I do hope, Ribiera, that you won't look as if you were frightened. If there's any hitch, and delay for letting some fuel out of the tanks or messing up the motors, I'll be very sorry for you."
The car swooped out into bright sunshine. The flying field lay below, already in the shadow of the banking clouds above. Hangars lay stretched out across the level space.
Through the gates. Ribiera licked his lips. Bell jammed the revolver muzzles closer against his sides. The chauffeur halted the car. Paula spoke softly to him. He stiffened. Bell found it possible to smile faintly.
Ribiera gave orders. There was a moment's pause – the revolver muzzles went deeper into his side – and he snarled a repetition. The official cringed and moved swiftly.
"You have chosen your slaves well, Ribiera," said Bell coolly. "They seem to occupy all strategic positions. We'll ride across."
The gears clashed. The car swerved forward and went deliberately across the wide clear space that was the flying field. It halted near the farther side. In minutes the door of a hangar swung wide. There was the sputtering of a not-yet-warmed-up motor. The big plane came slowly out, its motors coughing now and then. It swung clumsily across the field, turned in a wide circle, and stopped some forty or fifty feet from the car.
"Send the mechanic back, on foot," said Bell softly.
Again Ribiera found it expedient to snarl. And Bell added, gently, while the throttled-down motors of the big amphibian boomed on:
"Now get out of the car."
Tiny figures began to gaze curiously at them from the row of hangars. The mechanic, starting back on foot, the four people getting out of the car, the big plane waiting…
With his revolver ready and aimed at Ribiera's bulk, Bell reached in the front of the car and turned off the switch. The motor died abruptly. He put the key in his pocket.
"Just to get a minute or two extra start," he said dryly. "Climb up in the plane, Paula."
She obeyed, and turned at the top.
"I will cover them until you are up," she said quietly.
Bell laughed, now. A genuine laugh, for the first time in many days.
"We do work together!" he said cheerfully.
But he backed up the ladder. There was a stirring over by the hangars. The mechanic who had taxied the plane to this spot was a dwindling speck, no more than a third of the way across the field. But even from the distant hangars it could be seen that something was wrong.
"Close the door, Paula," said Bell. He had seated himself at the controls, and scanned the instruments closely.
This machine was heavy and large and massive. The boat-body between the retractable wheels added weight to the structure, and when Bell gave it the gun it seemed to pick up speed with an irritating slowness, and to roll and lurch very heavily when it did begin to approach flying speed. The run was long before the tail came up. It was longer before the joltings lessened and the plane began to rise slowly, with the solid steadiness that only a large and heavily loaded plane can compass.
Up, and up… Bell was three hundred feet high when he crossed the hangars and saw tiny faces staring up at him. Some of the small figures were pointing across the field. The big plane circled widely, gaining altitude, and Bell gazed down. Ribiera was gesticulating wildly, pointing upward to the soaring thing, shaking his fist at it, and making imperious, frantic motions of command.
Bell took one quick glance all about the horizon. Toward the sea the sun shone down brilliantly upon the city. Inland a broad white wall of advancing rain moved toward the coastline. And Bell smiled frostily, and flung the big ship into a dive and swooped down upon Ribiera as a hawk might swoop at a chicken.
Ribiera saw the monster thing bearing down savagely, its motors bellowing, its nose pointed directly at him. And there is absolutely nothing more terrifying upon the earth than to see a plane diving upon you with deadly intent. A panic that throws back to non-human ancestors seizes upon a man. He feels the paralysis of those ancient anthropoids who were preyed upon by dying races of winged monsters in the past. That racial, atavistic terror seizes upon him.
Bell laughed, though it sounded more like a bark, as Ribiera flung himself to the ground and screamed hoarsely when the plane seemed about to pounce upon him. The shrill timbre of the shriek cut through the roaring of the motors, even through the thick padding of the big plane's cabin walls that reduced that roaring to a not intolerable growl.
But the plane passed ten feet or more above his head. It rose, and climbed steeply, and passed again above the now buzzing, agitated hangars, and climbed above the hills behind the flying field as some men went running and others moved by swifter means toward the shaken, nerve-racked Ribiera, on whose lips were flecks of foam.
Bell looked far below and far behind him. The incredible greenness of tropic verdure, of the jungle which rings Rio all about. The many glitterings of sunlight upon glass, and upon the polished domes of sundry public buildings, and the multitudinous shimmerings of the tropic sun upon the bay. The deep dark shadow of the banking clouds drew a sharp line across the earth, and deep in that shadow lay the flying field, growing small and distant as the plane flew on. But specks raced across the wide expanse. In a peculiar, irrational fashion those specks darted toward a nearly invisible speck, and encountered other specks darting away from that nearly invisible speck, and gradually all the specks were turned about and racing for the angular, toy-block squares which were the hangars of the aeroplanes of the city of Rio de Janeiro.
Little white things appeared from those hangars – planes being thrust out into the open air while motes of men raced agitatedly about them. One of them was suddenly in motion. It moved slowly and clumsily across the ground, and then abruptly moved more swiftly. It seemed to float upward and to swing about in mid-air. It came floating toward the amphibian, though apparently nearly stationary against the sky. Another moved jerkily, and another…
Just before the big plane dived into the wide white wall of falling water, the air behind it seemed to swarm with aircraft.
In the cabin of the amphibian, of course, the bellowing of the motors outside was muffled to a certain degree. Paula clung to the seats and moved awkwardly up to the place beside Bell. She had just managed to seat herself when the falling sheet of water obliterated all the world.
"Strap yourself in your seat," he said in her ear above the persistent tumult without. "Then you might adjust my safety-belt. Well be flying blind in this rain. I hope the propellers hold."
She fumbled, first at the belt beside his upholstered chair, and only afterward adjusted her own. He sent a quick glance at her.
"Shouldn't have done that," he said quietly. "I can manage somehow."
The plane lurched and tumbled wildly. He kicked rudder and jerked on the stick, watching the instrument board closely. In moments the wild gyrations ceased.
"The beginning of this," he said evenly, "is going to be hectic. There'll be lightning soon."
Almost on his words the gray mist out the cabin windows seemed to flame. There was thunder even above the motors. But the faint, perceptible trembling of the whole plane under the impulse of its engines kept on. Bell kept his eyes on the bank and turn indicator, glancing now and then at the altimeter.
"We've got to climb," he said shortly, "up where the lightning is, too. We