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ONE:Notwithstanding the radical error of Aristotle��s philosophy��the false abstraction and isolation of the intellectual from the material sphere in Nature and in human life��it may furnish a useful corrective to the much falser philosophy insinuated, if not inculcated, by some moralists of our own age and country. Taken altogether, the teaching of these writers seems to be that the industry which addresses itself to the satisfaction of our material wants is much more meritorious than the artistic work which gives us direct aesthetic enjoyment, or the literary work which stimulates and gratifies our intellectual cravings; while within the artistic sphere fidelity of portraiture is preferred to the creation of ideal beauty; and within the intellectual sphere, mere observation of facts is set above the theorising power by which facts are unified and explained. Some of the school to whom we allude are great enemies of materialism; but teaching like theirs is materialism of the worst description. Consistently carried400 out, it would first reduce Europe to the level of China, and then reduce the whole human race to the level of bees or beavers. They forget that when we were all comfortably clothed, housed, and fed, our true lives would have only just begun. The choice would then remain between some new refinement of animal appetite and the theorising activity which, according to Aristotle, is the absolute end, every other activity being only a means for its attainment. There is not, indeed, such a fundamental distinction as he supposed, for activities of every order are connected by a continual reciprocity of services; but this only amounts to saying that the highest knowledge is a means to every other end no less than an end in itself. Aristotle is also fully justified in urging the necessity of leisure as a condition of intellectual progress. We may add that it is a leisure which is amply earned, for without it industrial production could not be maintained at its present height. Nor should the same standard of perfection be imposed on spiritual as on material labour. The latter could not be carried on at all unless success, and not failure, were the rule. It is otherwise in the ideal sphere. There the proportions are necessarily reversed. We must be content if out of a thousand guesses and trials one should contribute something to the immortal heritage of truth. Yet we may hope that this will not always be so, that the great discoveries and creations wrought out through the waste of innumerable lives are not only the expiation of all error and suffering in the past, but are also the pledge of a future when such sacrifices shall no longer be required.(1.) Why are shaping machines better adapted than planing machines for planing slots, key-ways, and so on?��(2.) What objects are gained by a quick return motion of the cutter bar of shaping machines? TWO:Tools should never be tempered by immersing their edges or cutting parts in the bath, and then allowing the heat to "run down" to attain a proper temper at the edge. I am well aware that this is attacking a general custom, but it is none the less wrong for that reason. Tools so hardened have a gradually diminishing temper from their point or edge, so that no part is properly tempered, and they require continual re-hardening, which spoils the steel; besides, the extreme edge, the only part which is tempered to a proper shade, is usually spoiled by heating and must be ground away to begin with. No latheman who has once had a set of tools tempered throughout by slow drawing, either in an oven, or on a hot plate, will ever consent to point hardening afterwards. A plate of iron, two to two and one-half inches thick, placed over the top of a tool dressing fire, makes a convenient arrangement for tempering tools, besides adding greatly to the convenience of slow heating, which is almost as important as slow drawing. The writer has by actual experiment determined that the amount of tool dressing [117] and tempering, to say nothing of time wasted in grinding tools, may in ordinary machine fitting be reduced one-third by "oven tempering."

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ONE:It may safely be assumed that the prejudices once entertained against Epicureanism are now extinct. Whatever may have been the speculative opinions of its founder, he had as good a right to them as the Apostles had to theirs; nor did he stand further aloof from the popular religion of any age than Aristotle, who has generally been in high favour with theologians. His practical teaching was directed towards the constant inculcation of virtue; nor was it belied by the conduct either of himself or of his disciples, even judged by the standard of the schools to which they were most opposed. And some of his physical theories, once rejected as self-evidently absurd, are now proved to be in harmony with the sober conclusions of modern science. At any rate, it is not in this quarter, as our readers will doubtless have already perceived, that the old prejudices, if they still exist, are likely to find an echo. Just now, indeed, the danger is not that Epicurus should be depreciated, but that his merits should obtain far more than their proper meed of recognition. It seems to be forgotten that what was best in his physics he borrowed from others, and that what he added was of less than no value; that he was ignorant or careless of demonstrated truths; that his avowed principles of belief were inconsistent with any truth rising above the level of vulgar apprehension; and finally, that in his system scientific interests were utterly subordinated to practical interests. TWO:"I see, I see," the Countess replied. "If we could only scheme some plan----"Low banks favored them.

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ONE:5. Symmetry of appearance, which is often more the result of obvious adaptation than ornamentation.What was wrong? TWO:

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ONE:3. The power developed is as the difference of volume between the feed-water forced into the boiler, and the volume of the steam that is drawn from the boiler, or as the amount of heat taken up by the water.A pattern-maker no sooner sees a casting than he imagines the kind of pattern employed in moulding it; a moulder will imagine the plan of moulding and casting a piece; while an engineer will criticise the arrangement, proportions, adaptation, and general design, and if skilled, as he ought to be, will also detect at a glance any useless expense in patterns or moulding. TWO:��Help you��help you with what?��

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