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Dave Innes came back to Sari. He may have been gone a week, or he may have been gone for years. It was still noon. But Perry had completed his aeroplane. He was very proud of it. He could scarcely wait to show it to Dave Innes. 'Does it fly?' asked Innes. 'Of course it flies,' snapped Perry. 'What good would an aeroplane be which did not fly.' 'None,' replied Innes. 'Have you flown it yet?' 'No, of course not. The day of the first flight is going to be epochal in the annals of Pellucidar. Do you think I’d fly it without you being here to see?' 'That’s mighty nice of you, Abner; and I appreciate it. When are you going to fly it?' 'Right now, right now. Come and see it,' 'Just what do you propose using an aeroplane for?' asked Innes. 'To drop bombs, of course, just think of the havoc it will raise! Think of these poor people who have never seen an aeroplane before running out from their caves as it circles overhead. Think of the vast stride it will be in civilizing these people! Why, we should be able to wipe out a village with a few bombs.' 'When I went back to the outer crust after the Great War that ended in 1918,' said Innes, 'I heard a lot about the use of aeroplanes in war; but I also heard about a weapon which causes far more suffering and death than bombs.' 'What was that?' demanded Perry, eagerly. 'Poison gas,' said Innes. 'Ah, well,' said Perry, 'perhaps I shall put my mind to that later.' Dave Innes grinned. He knew that there was not a kinder hearted person living than Abner Perry. He knew that Perry’s plans for slaughter were purely academic. Perry was a theoretician, pure and simple. 'All right,' he said, 'let’s have a look at your plane.' Perry led him to a small hangar–a strange anachronism in Stone-Age Pellucidar. 'There!' he said, with pride. 'There she is; the first aeroplane to fly the skies of Pellucidar.' 'Is that an aeroplane?' demanded Innes. 'It certainly doesn’t look like one.' 'That is because it utilizes some entirely new principles,' explained Perry. 'It looks more like a parachute with a motor and a cockpit on top of it.' 'Exactly!' said Perry. 'You grasped the idea instantly yet there is more to it than the eye perceives. You see one of the dangers of flying is, naturally, that of falling; now, by designing a plane on the principles of a parachute, I have greatly minimized that danger.' 'But what keeps it in the air at all? What gets it up?' 'Beneath the plane is a blower, operated by the engine. This blows a strong current of air constantly straight up from beneath the wing; and, of course, the air flow, while the ship is in motion supports it as is true in other, less advanced, designs; while the blower assists it in quickly attaining altitude.' 'Are you going to try to go up in that thing?' demanded Innes. 'Why, no; I have been saving that honor for you. Think of it! The first man to have flown in the heavens of Pellucidar. You should be grateful to me, David.' Dave Innes had to smile; Perry was so naive about the whole thing. 'Well,' he said, 'I don’t want to disappoint you, Abner; and so I’ll give the thing a trial–just to prove to you that it won’t fly.' 'You’ll be surprised,' said Perry. 'It will soar aloft like a lark on the wing.' A considerable number of Sarians had gathered to inspect the plane and witness the flight. They were all skeptical, but not for the same reasons that David Innes was skeptical. They knew nothing about aeronautics, but they knew that man could not fly. Dian the Beautiful was among them. She is Dave Innes’s mate. 'Do you think it will fly?' she asked Innes. 'No.' 'Then why risk your life?' 'If it doesn’t fly, there will be no risk; and it will please Abner if I try,' he replied. 'There will be no honor,' she said, 'for it will not be the first aeroplane to fly over Pellucidar. The great ship that you called a dirigible brought a plane. Was it not Jason Gridley who flew it until it was brought down by a thipdar?' They were walking around the plane examining it carefully. The frame of the single parachute-like wing was of bamboo: the 'fabric' was fabricated of the peritoneum of a large dinosaur. It was a thin, transparent membrane well suited to the purpose. The cockpit was set down into the top of the wing; the motor stuck out in front like a sore thumb; and behind a long tail seemed to have been designed to counter-balance the weight of the engine. It carried the stabilizers, fin, rudder, and elevators. The engine, the first gas engine built in Pellucidar, was, an achievement of the first magnitude. It had been built practically by hand by men of the Stone Age, under the direction of Perry, and without precision instruments. 'Will it run?' asked Innes. 'Of course it will run,' replied Perry. 'It is, I will concede, a trifle noisy; and is susceptible to some refinements, but a sweet thing nevertheless.' 'I hope so,' said Innes.