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In cutting screws it is best not to refer to that mistaken convenience called a wheel list, usually stamped on some part of engine lathes to aid in selecting wheels. A screw to [127] be cut is to the lead screw on a lathe as the wheel on the screw is to the wheel on the spindle, and every workman should be familiar with so simple a matter as computing wheels for screw cutting, when there is but one train of wheels. Wheels for screw cutting may be computed not only quite as soon as read from an index, but the advantage of being familiar with wheel changes is very important in other cases, and frequently such combinations have to be made when there is not an index at hand.このページの先頭です
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TWO:The prophecy proved to be correct. Isidore regretted that he had another engagement to dine out this evening. Perhaps it was only a pleasure deferred to the end of the week. Leona tore the paper up passionately.
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THREE:CHAPTER XVIII. LAWRENCE IS MYSTERIOUS. THREE:Good gracious golly! gasped Dick. THREE:"It is a pity, sir, that you did not arrive a day sooner, then you might have witnessed great barbarity of the Germans. If you walk on a little farther along the canal, you will see three persons hanging from a tree near Haccourt; one of these is a boy of fourteen. Nobody was allowed on the road, and as a patrol met these three persons, they concluded immediately that they were francs-tireurs, strung them up on the tree, without a trial of any sort, and in addition shot each a bullet through the head. To-day another patrol arrived and had the effrontery to tell the members of the Maastricht Red Cross that the boy had murdered a captain. And we are not allowed to remove the corpses. Horrible!... horrible!"
TWO:The profit reaped by Aristotle from the connexion seems equally doubtful. Tradition tells us that enormous sums of money were spent in aid of his scientific researches, and a whole army of crown servants deputed to collect information287 bearing on his zoological studies. Modern explorations, however, have proved that the conquests of Alexander, at least, did not, as has been pretended, supply him with any new specimens; nor does the knowledge contained in his extant treatises exceed what could be obtained either by his own observations or by private enquiries. At the same time we may suppose that his services were handsomely rewarded, and that his official position at the Macedonian Court gave him numerous opportunities for conversing with the grooms, huntsmen, shepherds, fishermen, and others, from whom most of what he tells us about the habits of animals was learned. In connexion with the favour enjoyed by Aristotle, it must be mentioned as a fresh proof of his amiable character, that he obtained the restoration of Stageira, which had been ruthlessly destroyed by Philip, together with the other Greek cities of the Chalcidic peninsula.
TWO:The feed motion in slotting machines, because of the tools being held rigidly, has to operate differently from that of planing machines. The cross-feed of a planing machine may act during the return stroke, but in slotting machines, the feed movement should take place at the end of the up-stroke, or after the tools are clear of the material; so much of the stroke as is made during the feeding action is therefore lost; and because of this, mechanism for operating the feed usually has a quick abrupt action so as to save useless movement of the cutter bar.Quickly he summoned an orderly and gave some orders, and a few minutes later four more officers drew round the table, on which a large map of Belgium was displayed. Their tone became at once charmingly sweet and kind, and a soldier offered me some lemonade from small bottles kept cool in a basin filled with cold water.

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A set of lathe tools should consist of all that are required for every variety of work performed, so that no time will be lost by waiting to prepare tools after they are wanted. An ordinary engine lathe, operating on common work not exceeding [126] twenty inches of diameter, will require from twenty-five to thirty-five tools, which will serve for every purpose if they are kept in order and in place. A workman may get along with ten tools or even less, but not to his own satisfaction, nor in a speedy way. Each tool should be properly tempered and ground, ready for use 'when put away;' if a tool is broken, it should at once be repaired, no matter when it is likely to be again used. A workman who has pride in his tools will always be supplied with as many as he requires, because it takes no computation to prove that fifty pounds of extra cast steel tools, as an investment, is but a small matter compared to the gain in manipulation by having them at hand.It must not be supposed that the influx of Asiatic religions into Europe was attended by any loss of faith in the old gods of Greece and Italy, or by any neglect of their worship. The researches of Friedl?nder have proved the absolute erroneousness of such an idea, widely entertained as it has been. Innumerable monuments are in existence testifying to the continued authority of the Olympian divinities, and particularly of Jupiter, over the whole extent of the Roman empire. Ample endowments were still devoted to the maintenance of their service; their temples still smoked with sacrifices; their litanies were still repeated as a duty which it would have been scandalous to neglect; in all hours of public and private danger their help was still implored, and acknowledged by the dedication of votive offerings when the danger was overcome; it was still believed, as in the days of Homer, that they occasionally manifested themselves on earth, signalising their presence by works of superhuman power.339 Nor was there anything anomalous in this peaceable co-existence of the old with the new faiths. So far back as we can trace the records both of Greek and Roman polytheism, they are remarkable for their receptive and assimilative capacity. Apollo and Artemis were imported into Greece from Lycia, Heracles and Aphrodite from Phoenicia, Dionysus and Ares probably from220 Thrace. Roman religion under its oldest form included both a Latin or Sabine and an Etruscan element; at a subsequent period it became Hellenised without losing anything of its grave and decorous character. In Greece, the elastic system of divine relationships was stretched a little further so as to make room for the new comers. The same system, when introduced into Roman mythology, served to connect and enliven what previously had been so many rigid and isolated abstractions. With both, the supreme religious conception continued to be what it had been with their Aryan ancestors, that of a heavenly Father Jove; and the fashionable deities of the empire were received into the pantheon of Homer and Hesiod as recovered or adopted children of the same Olympian sire. The danger to Hellenistic polytheism was not from another form of the same type, but from a faith which should refuse to amalgamate with it on any terms; and in the environment created by Roman imperialism with its unifying and cosmopolitan character, such a faith, if it existed anywhere, could not fail in the long-run to supersede and extinguish its more tolerant rivals. But the immediate effect produced by giving free play to mens religious instincts was not the concentration of their belief on a single object, or on new to the exclusion of old objects, but an extraordinary abundance and complexity of supernaturalism under all its forms. This general tendency, again, admits of being decomposed into two distinct currents, according as it was determined by the introduction of alien superstitions from without, or by the development of native and popular superstition from within. But, in each case, the retrogressive movement resulted from the same political revolution. At once critical and conservative, the city-aristocracies prevented the perennial germs of religious life from multiplying to any serious extent within the limits of their jurisdiction, no less vigilantly than they prohibited the importation of its completed products from abroad. We have now to study the221 behaviour of these germs when the restraint to which they had formerly been subjected was lightened or withdrawn.The little room was at the top facing the blank windows of the Corner House. Hetty had no difficulty in finding the box, and a very brief search showed the address she was looking for. The box she emptied in the grate and set fire to the contents with a match she had brought for the purpose.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."Get on," the manager said impatiently, "Get on."
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