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Updated: May 31, 2025
This, I at once learned, was the pneumatic trough, the vessel in which the gases were collected. The professor begins the experiment. He takes a sort of large, long glass bulb, bent abruptly in the region of the neck. This, he informs us, is a retort. He pours into it, from a screw of paper, some black stuff that looks like powdered charcoal. This is manganese dioxide, the master tells us.
I regret that time will not admit of my giving any description of the modes of "cut and cover" which have been proposed for the performance of subaqueous works; sometimes the proposition has been to do this by means of coffer-dams, and with the work therefore open to the day-light during execution, and sometimes by movable pneumatic appliances.
And the leader of the party wore the wrinkled brow of tribulation. For he had to keep track of everything and see that package number twenty-eight was not left, and that package number sixteen did not get wet; that the pneumatic bed did not get punctured, and that the canned goods did. Beside which, the caravan was moving at the majestic rate of about five miles a day.
Jack jammed down the emergency brakes, which were pneumatic and operated from the pressure tank, with a suddenness that sent Dick Donovan almost catapulting out of the tonneau. "Jumping jiggers of Joppa!" he shouted, for he had not yet seen the obstacle in the road, "what's happened? Are we bust up?" "No, but if I hadn't stopped when I did we'd have bust someone else up," declared Jack.
Every part from Bach's scale to the pneumatic boxes in the making of a piano and player had been drawn from the spirit of things by men who made themselves ready to receive. They had toiled until they were fine; then they received.
"'Gentleman wizzer bicitle, 'bloomin' Dook' I can't look so very seedy," he said to himself. "I WONDER I should just like to know " There was something very comforting in the track of HER pneumatic running straight and steady along the road before him. It must be hers. No other pneumatic had been along the road that morning.
His car was banked with four others in a line of steel restless as cavalry, while the cross town traffic, limousines and enormous moving-vans and insistent motor-cycles, poured by; on the farther corner, pneumatic riveters rang on the sun-plated skeleton of a new building; and out of this tornado flashed the inspiration of a familiar face, and a fellow Booster shouted, "H' are you, George!"
Their small size rendered a descent in any open space neither difficult nor disagreeable, and it was possible to attach pneumatic wheels or even the ordinary motors for terrestrial tragic to them, and so carry them to a convenient starting place. They required a special sort of swift car to throw them into the air, but such a car was efficient in any open place clear of high buildings or trees.
I grant them a steady pneumatic pressure in the region of morals, and even faith. Picture to yourself, Ruth, New York without sermons. The dear old city would be like a ship without ballast, heeling over with every wind, and letting in the waters of immorality and scepticism. Remove this pulpit balance just for one week from New York City, and where should we be?"
Since then a conspiracy of accidents has changed the whole problem; the bicycle and its vibrations developed the pneumatic tyre, the pneumatic tyre rendered a comfortable mechanically driven road vehicle possible, the motor-car set an enormous premium on the development of very light, very efficient engines, and at last the engineer was able to offer the experimentalists in gliding one strong enough and light enough for the new purpose.
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