THREE:CHAPTER XIVThe labour, dirt, and self-denial inseparable from the acquirement of special knowledge in the mechanic arts are strong reasons for augmenting the importance and completeness of theoretical knowledge, and while it should be, as it is, the constant object to bring everything, even manipulative processes, so far as possible, within general rules, it must not be forgotten that there is a limit in this direction.
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THREE:5. Every part laid down has something to govern it that may be termed a "base"some condition of function or position which, if understood, will suggest size, shape, and relation to other parts. By searching after a base for each and every part and detail, the draughtsman proceeds upon a regular system, continually maintaining a test of what is done. Every wheel, shaft, screw or piece of framing should be made with a clear view of the functions it has to fill, and there are, as before said, always reasons why such parts should be of a certain size, have such a speed of movement, or a certain amount of bearing surface, and so on. These reasons or conditions may be classed as expedient, important, or essential, and must be estimated accordingly. As claimed at the beginning, the designs of machines can only in a limited degree be determined by mathematical data. Leaving out all considerations of machine operation with which books have scarcely attempted to deal, we have only to refer to the element of strains to verify the general truth of the proposition.
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THREE:I dont miss much! Sandy said meaningly.
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THREE:1. The steam-engine is an agent for utilising the power of heat and applying it to useful purposes.
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THREE:"They were all unrecognisable, their faces were black from smoke, their uniforms in rags, their hands covered with blood. The general was put on a stretcher, and carried outside the fort across the heaps of obstacles; there he was attended to by a surgeon. He had lost consciousness. As soon as he recovered it, he pressed the hands of two Belgian officers. 'It is all over; there is nothing left to defend. But we did our utmost courageously.'"Stand still!" the officer thundered.
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THREE:Mr. van Wersch was told that they intended to send him to Tongres, but after a deliberation between Captain Spuer and Major Krittel, a very kind man as I have already remarked, he was allowed to stay at Bilsen until the examination should be over. He was allowed to walk through the townlet under military escort at first, but later entirely free, and to sleep at the station under military guard. After another search, he was at last allowed to leave for Maastricht on Monday morning.
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THREE:Isidore received his visitor warmly. He had taken a great fancy in his calm way to the pretty, plucky girl who had played so fine a part in the elucidation of a great mystery and a cruel wrong. He listened to what Hetty had to say.
