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There is also a distinction between machine and hand cutting that may be noted. In machine cutting it is performed in true geometrical lines, the tools or material being moved by positive guides as in planing and turning; in hand operations, such as filing, scraping or chipping, the tools are moved without positive guidance, and act in irregular lines.

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Lawrence winked never so slightly. He had his own ideas on that head. He read the one letter that Prout handed to him and smiled. Beyond doubt the letter had been written by the queer misshapen outcast who had been found dead in the Corner House. As Lawrence returned the letter he looked at his watch.
TWO:I had expected it and believed the reports, but it hurt all the same. I had had intercourse with German soldiers almost exclusively; but that gave223 me a much better opportunity for observing their conduct, which roused in me a deep sympathy for the poor, oppressed Belgian people. That was why I was so sorry to hear of the fall of Antwerp, although I was not discouraged. Right would triumph, and the day come when the Belgian nation would shake off the foreign yoke of tyranny, and repair in peace and prosperity, under the sagacious rule of their king, what barbarians destroyed and pulled down.
THREE:If asked for advice as to the most important object for an apprentice to aim at in beginning his fitting course, nine out of ten experienced men will say, "to do work well." As power is measured by force and velocity, work is measured by the two conditions of skill and time. The first consideration being, how well a thing may be done, and secondly, in how short a time may it be performed; the skill spent on a piece of work is the measure of its worth; if work is badly executed, it makes no difference how short the time of performance has been; this can add nothing to the value of what is done although the expense is diminished.Bruce kissed her behind the demure corner of a Japanese screen. His eyes were dancing with mischief and pleasure.

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THREE:Machine motion is mainly rotary; and as rotary motion is accomplished by cylindrical parts such as shafts, bearings, pulleys and wheels, we find that the greater share of machine tools are directed to preparing cylindrical forms. If we note the area of the turned, bored and drilled surface in ordinary machinery, and compare with the amount of planed surface, we will find the former not less than as two to one in the finer class of machinery, and as three to one in the coarser class; from this may be estimated approximately the proportion of tools required for operating on cylindrical surfaces and plane surfaces; assuming the cutting tools to have the same capacity in the two cases, the proportion will be as three to one. This difference between the number of machines required for cylindrical and plane surfaces is farther increased, when we consider that tools act continually on cylindrical surfaces and intermittently on plane surfaces.

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THREE:with honour may repay Thee,That-there is just what I cant tell you, Jeff replied.
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    By examining automatic hammers it will be found that their valves are connected to the drop by means of links, producing [162] coincident movement of the piston and valve, and that the movement of one is contingent upon and governed by the other. It will also be found that these connections or links are capable of extension, so as to alter the relative position of the piston and valve, thereby regulating the range of the blow, but that the movement of the two is reciprocal or in unison. Reasoning inductively, not discovering or inventing, it may be determined that to secure a stamp blow of a hammer-head, the valve must not open or admit steam beneath the piston until a blow is completed and the hammer has stopped."'I might quote another small detail. Before the train228 arrived at Landen I had had a very pleasant chat in the corridor with a German soldier, who seemed tolerably humane and civilised, even in his talk. After the departure from Landen I again got into conversation with him, and did not fail to express my indignation; and then he gave me the following reply: "Oh well, one must think of the position of our soldiers, who have been for days in the trenches under the murderous fire of the enemy. Later on they will themselves repent for what has happened." Perhaps the German government may be able to discover who that soldier is, if I add that he went home for good because he was suffering from heart-disease.It was from mathematical science that the light of certainty first broke. Socrates had not encouraged the study of mathematics, either pure or applied; nor, if we may judge from some disparaging allusions to Hippias and his lectures in the Protagoras, did Plato at first regard it with any particular favour. He may have acquired some notions of arithmetic and geometry at school; but the intimate acquaintance with, and deep interest in them, manifested throughout his later works, probably dates from his visits to Italy, Sicily, Cyrn, and Egypt. In each of these places the exact sciences were cultivated with more assiduity than at Athens; in southern Italy they had been brought into close connexion with philosophy by a system of mystical interpretation. The glory of discovering their true speculative significance was reserved for Plato. Just as he had detected a profound analogy between the Socratic scepticism and the Heracleitean flux, so also, by another vivid intuition, he saw in the definitions and demonstrations of geometry a type of true reasoning, a particular application of the Socratic logic. Thus the two studies were brought into fruitful reaction, the one gaining a wider applicability, and the other an exacter method of proof. The mathematical spirit ultimately proved211 too strong for Plato, and petrified his philosophy into a lifeless formalism; but no extraneous influence helped so much to bring about the complete maturity of his constructive powers, in no direction has he more profoundly influenced the thought of later ages.
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