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The rudder is also very much larger, in proportion, than that of the model; and the screw is considerably smaller. The balloon is furnished besides with a grapnel, and a guide-rope; which latter is of the most indispensable importance. A few words, in explanation, will here be necessary for such of our readers as are not conversant with the details of aerostation.
You shall be instructed by my company, and my conversation shall compensate you for the annoyance I have caused you." I seated myself, without replying, at the opposite extremity of the car. The young man had drawn from his great coat a voluminous portfolio; it was a work on aerostation.
The first time that Robertson appears in the annals of aerostation is in 1802, on the occasion of the sale of the balloon used at the battle of Fleurus, of which mention will be made in the chapter on military aerostation. But three years previously he had been instructed to make a balloon of an original form, which should ascend in honour of the Turkish ambassador at the garden of Tivoli.
The early ascents of Montgolfier had for their aim the establishment of the fact that any body lighter than the volume of air which it displaces will rise in the atmosphere; those of Roziers were undertaken to prove that man can apply this principle for the purpose of making actual aerial voyages; those of Robertson, Gay-Lussac, &c., were undertaken for the purpose of ascertaining certain meteorological phenomena; those of Conte Coutelle applied aerostation to military uses.
The man of science laughs at this, because he is only a man of science, and does not know what it means; but the poet and the child care as little for his laughter as the birds of God, as Dante calls the angels, for his treatise on aerostation.
With these feelings, we have thought it consistent with our duty as journalists, not to refuse publicity to an account of what was till lately doing in Paris to forward practical aërostation we say, lately; for we are told by our correspondent, that the operations towards perfecting the invention have been stopped by orders of the French government, from an opinion that, if air-travelling were introduced, it would be injurious to the custom-house, and denationalise the country.
Few people saw any possibilities in aerostation, in spite of the adventures of the duck and sheep and cock; voyages to the moon were talked and written, and there was more of levity than seriousness over ballooning as a rule.
He asked and obtained from government the sum of 40,000 livres, in order to construct his machine. It then became clear what sort of balloon he had contrived. He united in one machine the two modes previously made use of in aerostation. Underneath a balloon filled with hydrogen gas, he suspended a Montgolfiere, or a balloon filled with hot air from a fire.
"See this game of balloons; it contains the whole history of the aerostatic art. This game, for the use of educated minds, is played like that of the Jew; with dice and counters of any value agreed upon, which are to be paid or received, according to the condition in which one arrives." "But," I resumed, "you seem to have valuable documents on aerostation?" "I am less learned than the Almighty!
The fact was that at this time the prevailing fear in France was, that Great Britain should bear off all the honours and profits of aerostation before any of these had been won by France. It was thus that with an untried machine, and under conditions the most unfavourable for his enterprise, Roziers prepared to risk his life in this undertaking, which was equally dangerous and useless.
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