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TWO:Cutting, as a process in converting material, includes the force to propel cutting edges, means to guide and control their action, and mechanism to sustain and adjust the material acted upon. In cutting with hand tools, the operator performs the two functions of propelling and guiding the tools with his hands; but in what [58] is called power operations, machines are made to perform these functions. In nearly all processes machines have supplanted hand labour, and it may be noticed in the history and development of machine tools that much has been lost in too closely imitating hand operations when machines were first applied. To be profitable, machines must either employ more force, guide tools with more accuracy, or move them at greater speed, than is attainable by hand. Increased speed may, although more seldom, be an object in the employment of machinery, as well as the guidance of implements or increased force in propelling them. The hands of workmen are not only limited as to the power that may be exerted, and unable to guide tools with accuracy, but are also limited to a slow rate of movement, so that machines can be employed with great advantage in many operations where neither the force nor guidance of tools are wanting.And while both light and darkness serve mankind

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FORE:It is to the second theory that Plotinus evidently leans. However closely his life may have been conformed to the Pythagorean model��a point with respect to which we have306 nothing better than the very prejudiced statements of Porphyry to rely on��there is no trace of Pythagorean asceticism in his writings. Hereafter we shall see how hostile he was to Gnostic pessimism. In the preceding essay, he had already specified admiration for physical beauty as a first and necessary step in the soul��s ascent to a contemplation of spiritual realities;451 and now it is under the guidance of Plato��s later speculations that he proceeds to account for her descent from that higher world to the restraints of matter and of sense.

FORE:IX.A proof of this last proposition is found in the fact that a thorough latheman will perform nearly as much work and do it as well on an old English lathe with plain screw feed, as can be performed on the more complicated lathes of modern construction; but as economy of skill is sometimes an equal or greater object than a saving of manual labour, estimates of tool capacity should be made accordingly. The main points of a lathe, such as may most readily affect its performance, are first��truth in the bearings of the running spindle which communicates a duplicate of its shape to pieces that are turned,��second, coincidence between the line of the spindle and the movement of the carriage,��third, a cross feed of the tool at a true right angle to the spindle and carriage movement,��fourth, durability of wearing surfaces, especially the spindle bearings and sliding ways. To these may be added many other points, such as the truth of feeding screws, rigidity of frames, and so on, but such requirements are obvious.

FORE:First. Gravity wheels, acting directly from the weight of the water which is loaded upon a wheel revolving in a vertical plane, the weight resting upon the descending side until the water has reached the lowest point, where it is discharged.

FORE:They carried all those patients into the cellars on stretchers, and there waited with the nursing staff for the bombardment that had been announced, but never came off.

FORE:"Here, swine!"It was good to be with him there, to feel the pressure of his hand, and to look into his keen, resolute face. With Gordon by her side Hetty felt equal to meeting any terrors. Yet after the lapse of a few hours the whole thing seemed so vague and intangible that she hesitated to speak.

FORE:"It will not be for long, dearest," he whispered. "Courage, darling."

FORE:One symptom of this reaction was the fashionable archaism of the Augustan age, the tendency to despise whatever was new in literature, and to exalt whatever was old. It is well known how feelingly Horace complains of a movement which was used to damage his own reputation as a poet;309 but what seems to have escaped observation is, that this protest against the literary archaism of his contemporaries is only one symptom of a much profounder division between his philosophy and theirs. He was just as good a patriot as they were, but his sympathies were with the Hellenising aristocracy to which Lucretius and Cicero had belonged, not with the narrow-minded conservatism of the middle classes and the country people. He was a man of progress and free-thought, who accepted the empire for what it might be worth, a Roman Prosper Merim��e or Sainte-Beuve, whose preference of order to anarchy did not involve any respect for superstitious beliefs simply because they were supported by authority. And this healthy common sense is so much a part of his character, that he sometimes gives his mistresses the benefit of it, warning Leuconoe against the Babylonian soothsayers, and telling202 Phidyle that the gods should be approached not only with sacrifices but with clean hands.310 Yet so strong was the spirit of the age, that the sceptical poet occasionally feels himself obliged to second or to applaud the work of restoration undertaken by Augustus, and to augur from it, with more or less sincerity, a reformation in private life.311 And even the frivolous Ovid may be supposed to have had the same object in view when composing his Fasti.

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FORE:��He has that life preserver in one hand��there he goes!�� cried Dick.