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7. By condensing the steam before it leaves the engine, so that the steam is returned to the air in the form of water, and of the same volume as when it entered the boiler, there is a gain [34] effected by avoiding atmospheric pressure, varying according to the perfection of the arrangements employed.Pencil-work is indeed the main operation, the inking being merely to give distinctness and permanency to the lines. The main thing in pencilling is accuracy of dimensions and stopping the lines where they should terminate without crossing others. The best pencils only are suitable for draughting; if the plumbago is not of the best quality, the points require to be continually sharpened, and the pencil is worn away at a rate that more than makes up the difference in cost between the finer and cheaper grades of pencils, to say nothing of the effect upon a drawing.Assuming, for example, that a machine will cost as much as the wages of an attendant for one year, which is not far from an average estimate for iron working machine tools, and that interest, wear, and repairs amount to ten per cent. on this sum, then the attendance would cost ten times as much as the machine; in other words, the wages paid to a workman to attend a machine is, on an average, ten times as much as the other expenses attending its operation, power excepted. This assumed, it follows that in machine tools any improvement directed to labour saving is worth ten times as much as an equal improvement directed to the economy of first cost.
ONE:"Another dash round, then I must try the lane at the back of the house," he said. "The car can't go on like this for ever."The motor sped on until it came at length to the corner of the street where Isidore's chambers were situated. It was a very quiet road, and few people were about. Quite calmly and collectedly Leona alighted.
TWO:Descartes had already accomplished a great simplification of the speculative problem by summing up all existence under the two heads of extension and thought. It remained to account for these, and to reduce them to a single idea. As we have seen, they were derived from Greek philosophy, and the bond which was to unite them must be sought for in the same direction. It will be remembered that the systems of Plato and Aristotle were bounded at either extremity by a determinate and by an indeterminate principle. With the one, existence ranged between the Idea of Good at the upper end of the scale and empty space at the lower; with the other, between absolute Thought and First Matter. It was by combining the two definite terms, space and thought, that Descartes had constructed his system; and after subtracting these the two indefinite terms remained. In one respect they were even more opposed to each other than were the terms with which they had been respectively associated. The Idea403 of Good represented unity, identity, and constancy, as against plurality, difference, and change; while Aristotles Matter was, by its very definition, multiform, fluctuating, and indeterminate. Nevertheless, there were equally important analogies traceable between them. No very clear account could be given of either, and both were customarily described by negatives. If Matter fell short of complete existence, the Good transcended all existence. If the one was a universal capacity for assuming Forms, the other was the source whence all Forms proceeded. When the distinctive characteristics of an individual were thought away, the question might well be mooted into which principle it would return. The ambiguous use of the word Power contributed still further to their identification, for it was not less applicable to the receptive than to the productive faculty. Now we have just seen into what importance the idea of Power suddenly sprang at the Renaissance: with Bruno it was the only abiding reality of Nature; with Hobbes it was the only object of human desire. 更多 »
TWO:Get that collapsible boat on the back of the tank, there! urged Jeff, and come back for me.
TWO:There was a good deal of whispering and talking in corners and under the trees at Longmere House. A fussy little man with an eyeglass seemed to have a great deal to say. Lady Longmere laughed somewhat scornfully as she watched him. A great pile of strawberries were on her plate.77
TWO:
TWO:They should stay there for all time, those stones with the blood upon them, but now, when they were being carried off by the woman who had robbed him of all that life holds dear, Charlton's passion flared out.
TWO:The Germans had then taken it into their heads that the Belgians occupied Bilsen and the station, and began a terrific fire at the station and the surrounding houses, although there was not a single Belgian soldier in the whole town. When they had satisfied themselves that this was the case, they stopped firing, and were furious on account of the derailing and the mistake they had made. They then started a wild hunt for the men, and set about ten houses on fire, as also the signalman's cottage, because he had not warned them of the danger by waving his red flag.
TWO:"Was he murdered?" came the hoarse whisper.
TWO:That-there certainly is queer, he commented. Youre right. Gum is stuck every place, wads of it.
TWO:Hetty laughed. It was past eleven, and Lawrence was going down to his club for an hour. The little girl had been a bit more fretful than usual.

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"You and I are going there secretly?" he asked. "Do you mean now?""And whose portrait appeared in one of the smart papers," said Prout. "I wonder if you can remember the name of the paper. It may be alive or it may be dead, but the ornamental heading had a woman playing a trumpet on it. This is in your line, sir, far more than in mine.""I can't believe it," said Lady Rockingham. "Mr. Harcourt, are you quite clear and certain of your facts? Who told you?""I like this," Leona Lalage exclaimed, "it braces the nerves. If those people in New York only do as they promise I shall be free yet. A little courage and I shall pluck safety from the Corner House yet."In respect to the difference between expanding and solid dies it consists mainly in the time required to run back, and the injury to dies which this operation occasions. Uniformity of [145] size is within certain limits insured by solid dies, but they are more liable to derangement and less easy to repair than expanding or independent dies.
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