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TWO:The favourable reception which the articles on "Shop Manipulation" met with during their serial publication, and various requests for their reproduction in the form of a book, has led to the present edition.The means of supporting cores must be devised, or at least understood, by pattern-makers; these supports consist of 'prints' and 'anchors.' Prints are extensions of the cores, which project through the casting and extend into the sides of the mould, to be held by the sand or by the flask. The prints of cores have duplicates on the patterns, called core prints, which are, or should be, of a different colour from the patterns, so as to distinguish one from the other. The amount of surface required to support cores is dependent upon their weight, or rather upon their cubic contents, because the weight of a core is but a trifling matter [96] compared to its floating force when surrounded by melted metal. An apprentice in studying devices for supporting cores must remember that the main force required is to hold them down, and not to bear their weight. The floating force of a core is as the difference between its weight and that of a solid of metal of the same size��a matter moulders often forget to consider. It is often impossible, from the nature of castings, to have prints large enough to support the cores, and it is then effected by anchors, pieces of iron that stand like braces between the cores and the flasks or pieces of iron imbedded in the sand to receive the strain of the anchors.

TWO:��They must be listening for us, in the seaplane,�� Sandy decided. ��I know there was a pilot and the man who got the life preserver. I wish I could have gotten a good look at either one, but the pilot had goggles and his helmet to hide his face and the other man had his back turned to us. Where can they be? What are they doing?��The lights were flaring at No. 1 Lytton Avenue, as they seemed to flare almost day and night. The red carpet crossed the pavement; inside the banks of flowers nodded their brilliant heads, there was a rustle of silken drapery and a ripple of laughter from the drawing-room. It was all typical of a life of pleasure.

TWO:"Oh, but listen: my papers...."

TWO:"Where did the Germans cross Netherland territory?"

TWO:After the revolution which destroyed the political power of the old aristocracy, there came a further revolution the effect of which was to diminish largely its social predominance. We learn from the bitter sarcasms of Horace and Juvenal that under the empire wealth took the place of birth, if not, as those satirists pretend, of merit, as a passport to distinction and respect. Merely to possess a certain amount of money procured admission to the equestrian and senatorial orders; while a smaller pecuniary qualification entitled any Roman citizen to rank among the Honestiores as opposed to the Humiliores, the latter only being liable, if found guilty of certain offences, to the more atrocious forms of capital punishment, such as death by the wild beasts or by fire.314 Even a reputation for learning was supposed to be a marketable commodity; and when supreme power was held by a philoso207pher, the vulgar rich could still hope to attract his favourable notice by filling their houses with books.315 We also know from Juvenal, what indeed the analogy of modern times would readily suggest, that large fortunes were often rapidly made, and made by the cultivation of very sordid arts. Thus members of the most ignorant and superstitious classes were constantly rising to positions where they could set the tone of public opinion, or at least help to determine its direction.The Countess turned on her heel, and disappeared. A moment later, and she was back with the glittering stream of fire in her hand.

TWO:In the shadows Hetty listened to as much of the talk as she could hear. But nobody was going to leave the house without her knowledge. Behind the hangings in the hall she waited. Her patience was not unduly tried. There was a light footstep presently, a pause as if of precaution, and the Countess came downstairs. Her hair had become blonde, there was a lace shawl over her head, her skirts were short and trim.We may consider it a fortunate circumstance that the philosophy of Form,��that is to say, of description, definition, classification, and sensuous perception, as distinguished from mathematical analysis and deductive reasoning,��was associated with a demonstrably false cosmology, as it thus became much more thoroughly discredited than would otherwise have been possible. At this juncture, the first to perceive and point out how profoundly an acceptance of the Copernican theory must affect men��s beliefs about Nature and the whole universe, was Giordano Bruno; and this alone would entitle him to a great place in the history of philosophy. The383 conception of a single finite world surrounded by a series of eternal and unchangeable crystal spheres must, he said, be exchanged for the conception of infinite worlds dispersed through illimitable space. Once grant that the earth has a double movement round its own axis and round the sun, and Aristotle��s whole system of finite existence collapses at once, leaving the ground clear for an entirely different order of ideas.545 But, in this respect, whatever was established by the new science had already been divined by a still older philosophy than Aristotle��s, as Bruno himself gladly acknowledged,546 and the immediate effect of his reasoning was to revive the Atomic theory. The assumption of infinite space, formerly considered an insuperable objection to that theory, now became one of its chief recommendations; the arguments of Lucretius regained their full force, while his fallacies were let drop; Atomism seemed not only possible but necessary; and the materialism once associated with it was equally revived. But Aristotelianism, as we have seen, was not alone in the field, and on the first symptoms of a successful revolt, its old rival stood in readiness to seize the vacant throne. The question was how far its claim would be supported, and how far disputed by the new invaders. It might be supposed that the older forms of Greek philosophy, thus restored to light after an eclipse of more than a thousand years, would be no less hostile to the poetic Platonism than to the scientific Aristotelianism of the Renaissance. Such, however, was not the case; and we have to show how an alliance was established between these apparently opposite lines of thought, eventually giving birth to the highest speculation of the following century.

TWO:The importance of standard dimensions, and the effect which a system of gauging may have in the construction of machines, will be a matter of some difficulty for a learner to understand. The interchangeability of parts, which is the immediate object in employing gauges, is plain enough, and some of the advantages at once apparent, yet the ultimate effects of such a system extend much farther than will at first be supposed.

TWO: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."About your money, Herr Maitrank?"