THREE:"I am afraid they do," Bruce replied. "They are going to call a cashier from the National Credit Bank who positively identified the deceased as the man who changed ��400 in gold for notes, part of which notes were numbers 190753 to 190792, or the notes I paid to Capper. That piece of evidence cannot possibly be shaken."Lost like ourselves his liberty!"

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THREE:Whether there exist any realities beyond what are revealed to us by this evidence, and what sensible evidence itself may be worth, were problems already actively canvassed in Aristotle��s time. His Metaphysics at once takes us into the thick of the debate. The first question of that age was, What are the causes and principles of things? On one side stood the materialists��the old Ionian physicists and their living representatives. They said that all things came from water or air or fire, or from a mixture of the four elements, or from the interaction of opposites, such as wet and dry, hot and cold.332 Aristotle, following in the track of his master, Plato, blames them for ignoring the incorporeal substances, by which he does not mean what would now be understood��feelings or states of consciousness, or even the spiritual substratum of consciousness��but rather the general qualities or assemblages of qualities which remain constant amid the fluctuations of sensible phenomena; considered, let us observe, not as subjective thoughts, but as objective realities. Another deficiency in the older physical theories is that they either ignore the efficient cause of motion altogether (like Thales), or assign causes not adequate to the purpose (like Empedocles); or when they hit on the true cause do not make the right use of it (like Anaxagoras). Lastly, they have omitted to study the final cause of a thing��the good for which it exists.Et merito: nam si certain finem esse viderent

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THREE:Founding and casting relate to forming parts of machinery by pouring melted metal into moulds, the force of gravity alone being sufficient to press or shape it into even complicated forms. As a process for shaping such metal as is not injured by the high degree of heat required in melting, moulding is the cheapest and most expeditious of all means, even for forms of regular outline, while the importance of moulding in producing irregular forms is such that without this process the whole system of machine construction would have to be changed. Founding operations are divided into two classes, known technically as green sand moulding, and loam or dry sand moulding; the first, when patterns or duplicates are used to form the moulds, and the second, when the moulds are built by hand without the aid of complete patterns. Founding involves a knowledge of mixing and melting metals such as are used in machine construction, the preparing and setting of cores for the internal displacement of the metal, cooling and shrinking strains, chills, and many other things that are more or less special, and can only be learned and understood from actual observation and practice.��Looks bad, this-here, don��t it?�� He grinned.

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THREE:As might be expected from the immense exuberance of their intellectual life, we find every kind of scepticism represented among the Greeks; and, as with their other philosophical tendencies, there is evidence of its existence previous to126 or independent of scientific speculation. Their very religion, though burdened with an enormous mass of fictitious legends, shows a certain unwillingness to transgress the more obvious laws of nature, not noticeable in the traditions of kindred or neighbouring races. Its tendency is rather to imagine supernatural causes for natural events, or to read a divine meaning into accidental occurrences, than to introduce impossibilities into the ordinary course of history. And some of its most marvellous stories are told in such a manner that the incredulous satire with which they were originally received is, by a beautiful play of irony, worked into the very texture of the narrative itself. For example, the Greeks were especially disinclined to believe that one of the lower animals could speak with a human voice, or that a dead man could be brought back to life��contradicted as both suppositions were by the facts of universal experience. So when the horse Xanthus replies to his master��s reproaches, Homer adds that his voice was arrested by the Erinyes��that is to say, by the laws of nature; and we may suspect that nothing more is intended by his speech than the interpretation which Achilles would spontaneously put on the mute and pathetic gaze of the faithful steed. And when, to illustrate the wondrous medical skill of Ascl��pius, it is related that at last he succeeded in restoring a dead man to life, the story adds that for this impious deed both the healer and his patient were immediately transfixed by a thunderbolt from heaven.215 Another impossibility is to predict with any certainty the future fate of individuals, and here also��as has been already observed in a different connexion216��the Greeks showed their extreme scepticism with regard to any alleged contravention of a natural law, under the transparent disguise of stories about persons whom ambiguous predictions had lured to their fall.

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THREE:CHAPTER V. THE OBJECT OF MECHANICAL INDUSTRY.

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