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Modern engineers of the abler class are so thoroughly in accord in this matter of ornamentation, both in opinion and practice, that the subject hardly requires to be mentioned, and it will be no disadvantage for a learner to commence by cultivating a contempt for whatever has no useful purpose. Of existing practice it may be said, that in what may be called industrial machinery, the amount of ornamentation is inverse as the amount of engineering skill employed in preparing designs.Pressure wheels, like gravity wheels, should, from theoretical inference, be expected to give a high per cent. of power. The water resting with the whole of its weight against the vanes or abutments, and without chance of escape except by turning the wheel, seems to meet the conditions of realising the whole effect due to the gravity of the water, and such wheels would no doubt be economical if they had not to contend with certain mechanical difficulties that render them impracticable in most cases.
FORE:
THREE:IX."I don't know yet. The things I see ... and ... of course that cannot do harm to the German army."

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THREE:

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THREE:A policeman stepped out of the gloom and tried to pull up the car. It flashed by him at the rate of 70 miles an hour.

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THREE:It is, after all, very questionable whether human happiness would be increased by suppressing the thought of death as something to be feared. George Eliot, in her Legend of Jubal, certainly expresses the contrary opinion.180 The finest edge of enjoyment would be taken off if we forgot its essentially transitory character. The free man may, in Spinozas words, think of nothing less than of death; but he cannot prevent the sunken shadow from throwing all his thoughts of life into higher and more luminous relief. The ideal enjoyment afforded by literature would lose much of its zest were we to discard all sympathy with the fears and sorrows on which our mortal condition has enabled it so largely to drawthe lacrimae rerum, which Lucretius himself has turned to such admirable account. And the whole treasure of happiness due to mutual affection must gain by our remembrance that the time granted for its exercise is always limited, and may at any moment be brought to an endor rather, such an94 effect might be looked for were this remembrance more constantly present to our minds.

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THREE:

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THREE:"Return that knife at once!"

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THREE:Reasons have already been suggested for placing Anaxagoras last in order among the physical philosophers, notwithstanding his priority in point of age to more than one of them. He was born, according to the most credible accounts, 500 B.C., at Clazomenae, an Ionian city, and settled in Athens when twenty years of age. There he spent much the greater part of a long life, illustrating the type of character which Euripidesexpressly referring, as is supposed, to the Ionian sagehas described in the following choric lines:The shrill clatter of the telephone bell tinkled in the next room. The ring was repeated in a few seconds imperiously.

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THREE:"Ah, this is serious. How did you know that?"

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THREE:Lawrence begged to differ. In the first place, he anticipated considerable entertainment. He was not selfish, he said, and had no desire to keep it to himself.Now well climb! decided Sandy.

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FORE:69It looks safe for a landingpretty solid beach, Larry concluded, and evidently Jeff felt the same way for he climbed in his turning bank, got the wind right and came down, using his engine with partly opened throttle to help him settle gradually until the landing wheels touched when the tail dropped smartly, the gun was cut, and the sand, fairly level and reasonably well-packed, dragged them to a stop.
    FORE:On the whole, Gordon Bruce was persuaded that the world was a pleasant place to live in. He had youth and intellect and ambition that looked likely to be satisfied. Two years before he had recklessly ventured his small capital on a suite of ground floor rooms in Duke Street, and for some little time he had had a hard struggle to keep up appearances, and pay the instalments as they came due on his somewhat showy furniture.Well, he was free. He did not hesitate for a moment. He darted swiftly down the road with the air of a man who knows exactly what he is doing and where he wants to go. The man had not been convicted yet, therefore he had the advantage of wearing his own clothes.

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FORE:No servants were present, they had been sent away long ago. Tempting things were set out on a side table, and whoever wanted anything helped himself. The players were so intent upon their game that nothing could be heard beyond their laboured breathing.Of nature that cannot die, FORE:76 FORE:The general condition of the town was not calmer during these last days. New hostages were taken continually, and generally, as before, they were clerics, in consequence of which the religious services were in a continual muddle, and sometimes on Sundays no Holy Mass could be said. Burgomaster Nerinx had now posted proclamations in which he called for volunteers to serve as temporary hostages, instead of the priests, during the hours of religious service. As if it were office work they mentioned: "The service begins in the afternoon at ... o'clock and will end after ... days at ... o'clock."

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FORE:In the centre of the town I was detained by three sailors, who called out an angry "Halt!" seized my bicycle, and made me a prisoner, "because I was an Englishman." Happily I could prove the contrary by my papers; and the permit of the Bruges commander to go about on a bicycle made them return it.As I was still musing about the tragedy of this venerable personality in these hard days of war, the door was opened suddenly and his spare figure stood before me. It was a moment full of emotion, and perhaps I might not have recovered myself so quickly if the kind prelate had not met me with so much kindness.

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FORE:It may be remarked as a general rule that the hardness of cutting tools is "inverse as the hardness of the material to be cut," which seems anomalous, and no doubt is so, if nothing but the cutting properties of edges is considered; but all cutting edges are subjected to transverse strain, and the amount of this strain is generally as the hardness of the material acted upon; hence the degree of temper has of necessity to be such as to guard against breaking the edges. Tools for cutting wood, for example, can be much harder than for cutting iron, or to state it better, tools for cutting wood are harder than those usually employed for cutting iron; for if iron tools were always as carefully formed and as carefully used as those employed in cutting wood, they could be equally hard.Inherent or cooling strains in castings is much more intricate than shrinkage: it is, in fact, one of the most uncertain and obscure matters that pattern-makers and moulders have to contend with. Inherent strains may weaken castings, or cause them to break while cooling, or sometimes even after they are finished; and in many kinds of works such strains must be carefully guarded against, both in the preparation of designs and the arrangement of patterns, especially for wheels and pulleys with spokes, and for struts or braces with both ends fixed. The main difficulty resulting from cooling strains, however, is that of castings being warped and sprung; this difficulty is continually present in the foundry and machine-shop, and there is perhaps no problem in the whole range of mechanical manipulation of which there exists more diversity of opinion and practice than of means to prevent the springing of castings. This being the case, an apprentice can hardly hope for much information here. There is no doubt of springing and strains in castings being the result of constant causes that might be fully understood if it were not for the ever-changing conditions which exist in casting, both as to the form of pieces, the temperature and quality of metal, mode of cooling, and so on.

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"Every note," Prout cried, "every blessed note mentioned in the dead's man's letter."The invention is now complete, and as the principles are all within the scope of practical mechanism, there is nothing left to do but to devise such mechanical expedients as will carry out the principles laid down. This mechanical scheming is a second, and in some sense an independent part of machine improvement, and should always be subservient to principles; in fact, to separate mechanical scheming from principles, generally constitutes what has been called chance invention.CHAPTER XXXVI. A FAINT CLUE."Oh, I have not the slightest idea of trying to escape," she said. "Why should I? I am entirely innocent of the death of your brother."
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