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Updated: July 5, 2025
With the small hand air-pump he produced the first vacuum which was necessary; all was ready, every joint and stuffing-box was lubricated, the spring of the balance was adjusted to a nicety. But the engine would not start, though he turned the fly-wheel with his hand again and again, as if to encourage it. Of course it would not turn alone!
But first we must see to the boys!" They needed small attention, however. The opening of the big door had let in a flood of fresh air, and this dispelled the last of the fumes. The watchman was the first to revive. The sleep caused by the chemical, sprayed from the air-pump by the vandal, had been succeeded by a natural slumber, and this was the case with Ned and Tom.
They accordingly entered the pilot-house forthwith, closing the door securely after them the air-pump was stopped, the sea-cock communicating with the water-chambers was opened, and the Flying Fish, with an easy imperceptible motion, sank gently beneath the placid waters, to rest, a minute or two later, on a bed of gravel at the bottom of the Channel.
He vaguely felt as if he were in the vacuum of an air-pump.
"I know half the condenser-tubes are started; and the propeller-shaftin''s God knows how far out of the true, and we'll need a new air-pump, an' the main-steam leaks like a sieve, and there's worse each way I look; but paint's like clothes to a man, 'an ours is near all gone."
However it may be compressed, air returns, on liberation, to its original volume, and while thus perfectly elastic it is also the most compressible of bodies. This elasticity arises from the repulsive force of its particles, and is always equal to the compressive force which it balances. A glass vessel full of air, placed under a receiver and then exhausted by the air-pump, will burst into atoms.
Here little Mrs Machowl was on her knees before an air-pump, oiling and rubbing up its parts. Ram-stam, with clasped hands, head a little on one side, and a gentle smile of approbation on his lips, admired the progress of the operation.
He called it, and it came, daintily sniffed at his leg, and leaped on his lap, where he stroked and fondled it. "It bothers me," he said, "to imagine how a man like Embro gets any satisfaction out of life, for ever mumbling the bare dry bones of science. Such a life as his might as well be passed in the receiver of an air-pump." "Still the old Julius!" said the doctor, with a smile.
He held the large hammer in his hand with which he had given the stroke. He told me that he wanted more air, and that this was the signal to the workers of the air-pump. His eye was fixed on the air holes, with which the pipes communicated. I thought he appeared alarmed; he exchanged a look with Vanderhoek, and the eye of the latter was soon also fixed on the same spot.
There came a sudden hush upon the class-room after Miss Rylance had departed on her errand. It was a sultry afternoon in late June, and the four rows of girls seated at the two long desks in the long bare room, with its four tall windows facing a hot blue sky, felt almost as exhausted by the heat as if they had been placed under an air-pump.
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