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"Lytton Avenue houses are large and they have gardens."243An old smith who has stood at the forge for a score of years will take the same interest in tempering processes that a novice will. When a piece is to be tempered which is liable to spring or break, and the risk is great, he will enter upon it with the same zeal and interest that he would have done when learning his trade.このページの先頭です
ONE:No computations, drawings, or demonstrations of any kind will be employed to relieve the mind of the reader from the care of remembering and a dependence on his own exertions. Drawings, constants, formul?, tables, rules, with all that pertains to computation in mechanics, are already furnished in many excellent books, which leave nothing to be added, and such books can be studied at the same time with what is presented here.He paused in some confusion. He had the profoundest respect for the cunning and audacity of the people with whom he had to deal. Was this some startling new plot that they had been working on him?
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TWO:Nevertheless Bacons own attitude towards final causes differs essentially from Descartes. The French mathematician, had he spoken his whole mind, would probably have denied their existence altogether. The English reformer fully admits their reality, as, with his Aristotelian theory of Forms, he could hardly avoid doing; and we find that he actually associates the study of final with that of formal causes, assigning both to metaphysics as its peculiar province. This being so, his comparative neglect of the former is most easily explained by the famous comparison of teleological enquiries to vestal virgins, dedicated to the service of God and bearing no offspring; for Mr. Ellis has made it perfectly clear that the barrenness alluded to is not scientific but industrial. Our knowledge is extended when we trace the workings of a divine purpose in Nature; but this is not a kind of knowledge which bears fruit in useful mechanical inventions.553 Bacon probably felt that men would not be very forward to improve on Nature if they believed in the perfection of her works and in their beneficent adaptation to our wants. The teleological spirit was as strong with him as with Aristotle, but it took a different direction. Instead of studying the adaptation of means to ends where it already existed, he wished men to create it for themselves. But the utilitarian tendency, which predominated with Bacon, was quite exceptional with Descartes. Speaking generally, he desired knowledge for its own sake, not as an instrument for the gratification of other wants; and this intellectual disinterestedness was, perhaps, another aspect of the severance effected between thought and matter.
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THREE: THREE:CHAPTER LXI. LOGIC. THREE:Corresponding to the universal space which contains all particular spaces, there was, in the Neo-Platonic system, a universal Thought which contained all particular thoughts,the Nous about which we heard so much in studying Plotinus.405 Such a conception is utterly strange to the modern mind, but it was familiar enough to Spinoza; and we can see how it would be suggested by the common forms of reasoning. The tendency of syllogism is either to subsume lower under higher notions until a summum genus is reached, or to resolve all subjects into a single predicate, or to connect all predicates with a single subject. The analogies of space, too, would tell in the same direction, bringing nearer the idea of a vast thought-sea in which all particular thoughts, or what to a Cartesian meant the same thing, all particular minds, were contained. And Neo-Platonism showed how this universal Mind or Thought could, like the space which it so much resembled, be interpreted as the product of a still higher principle. To complete the parallelism, it remained to show that Thought, which before had seemed essentially finite, is, on the contrary, co-infinite with Extension. How this was done will appear a little further on.The prevailing custom of casting machine frames in one piece, or in as few pieces as possible, leads to a great deal of bar-boring, most of which can be performed accurately enough by boring bars supported in and fed through bearings. By setting up temporary bearings to support boring-bars, and improvising means of driving and feeding, most of the boring on machine frames can be performed on floors or sole plates and independent of boring machines and lathes. There are but few cases in which the importance of studying the principles of tool action is more clearly demonstrated than in this matter of boring; even long practical experience seldom leads to a thorough understanding of the [139] various problems which it involves.
TWO:There was a warning shout from Lawrence, who dashed forward and grasped the speaker by the wrist. But she wrenched herself away from him, and placed the table between them. Prout was looking on in a confused kind of way.
TWO:Those wide carts had passed us now, and we could proceed slowly. The bridge led to a farmhouse with tall trees and underwood. They took me to the right, to a densely overgrown spot, where a clearing had been made amidst some smaller shrubs. In the centre stood a table covered with a shining white cloth, and a goodly number of wine-bottles and glasses. Half a dozen officers in fine uniforms, gilt collars and epaulettes, were seated around it.

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Sandy had lost his suspicious look. His interest, as much as that of his older chums, was caught and chained by the coming possibilities and he put down the letter to listen to Jeff.After a long time we were able to enter a train taking numerous new troops to Antwerp. We occupied a first-class compartment, which looked like a cattle-truck: pieces of bread, paper, cigar-ends, and tobacco were lying on the floor and the seats; the ledges of the windows were full of candle-grease.With the breeze from the new direction, as they steadily got closer to the end of the island, coming over a spot where a break in the cloud showed brown-yellow sand and rushing white surf beyond the wide level beach, Sandys alert eyes caught sight of something for an instant. Prodding Jeff, he indicated the object.No subject connected with mechanics has been more thoroughly investigated than that of gearing. Text-books are replete with every kind of information pertaining to wheels, at least so far as the subject can be made a mathematical one; and to judge from the amount of matter, formul?, and diagrams, relating to the teeth of wheels that an apprentice will meet with, he will no doubt be led to believe that the main object of modern engineering is to generate wheels. It must be admitted that the teeth of wheels and the proportions of wheels is a very important matter to understand, and should be studied with the greatest care; but it is equally important to know how to produce the teeth in metal after their configuration has been defined on paper; to understand the endurance of teeth under abrasive wear when made of wrought or cast iron, brass or steel; how patterns can be constructed from which correct wheels may be cast, and how the teeth of wheels can be cut [52]by machinery, and so on."Quite so," Louis Balmayne said coolly, "for I also manipulated those papers. The romance of the mine and the way it came into your possession fascinated Lefevre. He lent you money at a great rate of interest, but he lent it. On him comes the misfortune. Lefevre has been speculating and burnt his fingers badly. He wanted money badly. He comes to Paris to borrow it from Maitrank----"
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