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A machine may be mechanically correct, arranged with symmetry, true proportions, and proper movements; but if such a machine has not commercial value, and is not applicable to a useful purpose, it is as much a failure as though it were mechanically inoperative. In fact, this consideration of cost and commercial value must be continually present; and a mechanical education that has not furnished a true understanding of the relations between commercial cost and mechanical excellence will fall short of achieving the objects for which such an education is undertaken. By reasoning from such premises as have been laid down, an apprentice may form true standards by which to judge of plans and processes that he is brought in contact with, and the objects for which they are conducted.

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Third.Each blow given is an independent operation, and can be repeated at will, while in other hammers such changes [110] can only be made throughout a series of blows by gradually increasing or diminishing their force.Prout nodded admiringly. Lawrence took a photograph from his pocket.
ONE:He put a hand on Sandys shoulder and the latter managed not to wince or draw away.Under certain conditions a given quantity of soft iron or steel may be cut away at less expense, and with greater accuracy, by milling than by any other process.

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"At about nine o'clock of Friday evening, August 21st, German soldiers arriving by rail from Ciney marched into the town by the Rue Saint Jacques. They began to shoot into the windows without the slightest provocation, killed a workman who was on his way home, wounded another inhabitant and compelled him to call out: 'Long live the Kaiser.' A third they wounded in the abdomen with thrusts of their bayonets. They burst into the cafs, requisitioned all spirits, got tipsy on them, and left after setting several houses on fire and knocking to pieces the doors and windows of others.More deliberately, settling down, first the hanging bulk of the unknown man, then the spreading folds of the parachute drifted into mistand mystery.I had also to promise the major that on my return I should bring with me a copy of De Tijd in which all I had experienced and seen in Bilsen was described, and also a box of Netherland cigars, which he promised to pay for; then I was allowed to go.
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