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There's Lenny Fairfield reading a treatise on hydraulics, and constructing a model for a fountain into the bargain; but that does not prevent his acquiescence in any proposition for getting rid of a National Debt, which he certainly never agreed to pay, and which he is told makes sugar and tea so shamefully dear. No.
Chamond, were chosen for this purpose, and from this point to the summit of Fourvieres was constructed by far the most remarkable aqueduct of ancient times, an engineering work which, as will be seen from the following description, partly taken from Montfalcon's history of Lyons, partly from Flacheron's account of this aqueduct, and partly from my own observations on the spot, reflects the greatest possible credit on the Roman engineers, and shows that they were not, as has been frequently supposed by those who have only examined aqueducts at Rome, by any means ignorant of the elementary principles of hydraulics.
It is well for Willie's reputation with a certain, and that not a small class of readers, that there was something even they would call useful in several of his inventions and many of his efforts; in his hydraulics, for instance, by means of which he saved old Tibby's limbs; in his house-building, too, by means of which they were able to take in grannie; and, for a long time now, he had been doing every little repair wanted in the house.
If this love for colour and line happened to be combined with an interest in mechanics and hydraulics, the result was a Leonardo da Vinci, who painted his pictures, experimented with his balloons and flying machines, drained the marshes of the Lombardian plains and "expressed" his joy and interest in all things between Heaven and Earth in prose, in painting, in sculpture and in curiously conceived engines.
I knew too much of hydraulics to fear things as silly as that, but it was not my business to cure his ridiculous fear. Very few words were needed to convince him that mine was the evil for him, he never crossed the sea, and I on the other hand could always walk upstairs, and I also felt at the time, as many must feel in that shop, that so absurd a fear could never trouble me.
He had brought with him a complex copper implement, which his friends had supposed was a new species of theodolite, but which turned out to be a scientific coffee-pot, in the development of which and its purposes, as the man of science carefully explained, there was called into play some of the principles involved in the sciences of hydraulics and pneumatics, to which list Lewis added, in an under-tone, those of aquatics, ecstatics, and rheumatics.
Hydrostatics, hydraulics, engineering, navigation, gunnery, pyrotechnics, mining, geometry, were summoned as broadly, vigorously, and intelligently to the destruction or preservation of a trembling city, as they have ever been, in more commercial days, to advance a financial or manufacturing purpose.
The curriculum of study imparted by Professor Rankine includes the stability of structures; the strength of materials; the principle of the actions of machines; prime movers, whether driven by animal strength, wind, or the mechanical action of heat; the principles of hydraulics; the mathematical principles of surveying and levelling; the engineering of earthwork, masonry, carpentry, structures in iron, roads, railways, bridges, and viaducts, tunnels, canals, works of drainage and water supply, river works, harbour works, and sea coast works.
Up stairs and down, round semicircles, up lifts, through nooks, corridors: saw the guns, and how by hydraulics everything was done the hoisting of ammunition, loading, training: guns intact, guns wrecked by the Dreadnoughts; and shimmering kitchens, which reeked a smell of heat, and the dairy-maids, and the line of kine, and the row of prison-doors, and the mechanism of ventilation, fans and blowers, the drainage-system, and the dynamos for lighting, for supplying power to motors, for heating, and for shimmering forth rich in the search-lights; and the central ballroom, the clothes store, the original one-ninety-sixth model, the Ambassador-region, the steaming laundry, and the roof, where Rebekah saw her initials on the breeze, and the vertical pop-guns under shields for dealing with aeroplane attack, and the cream theatre, and the paymaster's suite, and the bunkers, the Government-offices, and the tax- receiving rooms, the telephone system, and the lady-telegraphists till all were tired, though half had not been seen.
In the meantime the science of hydraulics had become better understood, and the establishment of the natural law according to which the velocity of a current of water, and of course the proportional quantity discharged by it in a given time, are increased by increasing its mass, had diminished if not dissipated the fear of exposing the banks of the Arno to greater danger from inundations by draining the Val di China into it.
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