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ONE:210��Now what do you think of your suspicions?�� Dick demanded. Sandy shook his head. TWO:In no other branch of machinery has so much research and experiment been made during eighty years past as in steam machinery, and, strange to say, the greater part of this research has been directed to the details of engines; yet there has been no improvement made during the time which has effected any considerable saving of heat or expense. The steam-engines of fifty years ago, considered as steam-using machines, utilised nearly the same proportion of the energy or power developed by the boiler as the most improved engines of modern construction��a fact that in itself indicates that an engine is not the vital part of steam machinery. There is not the least doubt that if the efforts to improve steam-engines had been mainly directed to economising heat and increasing the evaporative power of boilers, much more would have been accomplished with the same amount of research. This remark, however, does not apply to the present day, when the principles of steam-power are so well understood, and when heat is recognised as the proper element to deal with in attempts to diminish the expense of power. There is, of course, various degrees of economy in steam-using as well as in steam-generating machinery; but so long as the best steam machinery does not utilise but one-tenth or one-fifteenth part of the heat represented in the fuel burned, there need be no question as to the point where improvements in such machinery should be mainly directed.

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ONE:Fresh difficulties arise in explaining the activity which the Soul, in her turn, exerts. As originally conceived, her function was sufficiently clear. Mediating between two worlds, she transforms the lower one into a likeness of the higher, stamping on material objects a visible image of the eternal Ideas revealed to her by a contemplation of the Nous. And, as a further elaboration of this scheme, we were told that the primary soul generates an inferior soul, which, again, subdivides itself into the multitude of partial souls required324 for the animation of different bodily organisms. But now that our philosopher has entered on a synthetic construction of the elements furnished by his preliminary analysis, he finds himself confronted by an entirely new problem. For his implied principle is that each hypostasis must generate the grade which comes next after it in the descending series of manifestations, until the possibilities of existence have been exhausted. But in developing and applying the noetic Ideas, the Soul, apparently, finds a pre-existing Matter ready to hand. Thus she has to deal with something lower than herself, which she did not create, and which is not created by the Forms combined with it in sensible experience. We hear of a descent from thought to feeling, and from feeling to simple vitality,476 but in each instance the depth of the Soul��s fall is measured by the extent to which she penetrates into the recesses of a substance not clearly related to her nor to anything above her. TWO:"24.9.1914,

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ONE:"Of course, you know where the Dutchman is to be found?" TWO:On the horizon, coming at moderate speed, but growing large enough so that there could be no error of identification, came the amphibian. Its dun color and its tail marking were unmistakable.

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ONE:After eliminating all the sources of misery due to folly and vice, Epicurus had still to deal with what, in his opinion, were the most formidable obstacles to human happiness, dread of the divine anger and dread of death, either in itself, or as the entrance on another life. To meet these, he compiled, for we can hardly say constructed, an elaborate system of physical philosophy, having for its object to show that Nature is entirely governed by mechanical causes, and that the soul perishes with the body. We have already mentioned that for science as such and apart from its ethical applications he neither cared nor pretended to care in the least. It seems, therefore, rather surprising that he could not manage, like the Sceptics before him, to get rid of supernaturalism by a somewhat more expeditious method. The explanation seems to be that to give some account of natural phenomena had become, in his time, a necessity for every one aspiring to found a philosophical system. A brilliant example had been set by Plato and Aristotle, of whom the former, too, had apparently yielded to the popular demand rather than followed the bent of his own genius, in turning aside from ethics to physics; and Zeno had similarly included the whole of knowledge in his teaching. The old Greek curiosity respecting the causes of things was still alive; and a similar curiosity was doubtless awakening among those populations to whom Greek civilisation had been carried by colonisation, commerce, and conquest. Now, those scientific speculations are always the76 most popular which can be shown to have some bearing on religious belief, either in the way of confirmation or of opposition, according as faith or doubt happens to be most in the ascendent. Fifty years ago, among ourselves, no work on natural philosophy could hope for a large circulation unless it was filled with teleological applications. At present, liberal opinions are gaining ground; and those treatises are most eagerly studied which tend to prove that everything in Nature can be best explained through the agency of mechanical causation. At neither period is it the facts themselves which have excited most attention, but their possible bearing on our own interests. Among the contemporaries of Epicurus, the two currents of thought that in more recent times have enjoyed an alternate triumph, seem to have co-existed as forces of about equal strength. The old superstitions were rejected by all thinking men; and the only question was by what new faith they should be replaced. Poets and philosophers had alike laboured to bring about a religious reformation by exhibiting the popular mythology in its grotesque deformity, and by constructing systems in which pure monotheism was more or less distinctly proclaimed. But it suited the purpose, perhaps it gratified the vanity of Epicurus to talk as if the work of deliverance still remained to be done, as if men were still groaning under the incubus of superstitions which he alone could teach them to shake off. He seems, indeed, to have confounded the old and the new faiths under a common opprobrium, and to have assumed that the popular religion was mainly supported by Stoic arguments, or that the Stoic optimism was not less productive of superstitious terrors than the gloomy polytheism which it was designed to supersede.15248 TWO:Some makers of steam-hammers have so perfected the automatic class, that they may be instantly changed so as to work with either dead blows or elastic blows at pleasure, thereby combining all the advantages of both principles. This brings the steam-hammer where it is hard to imagine a want of farther improvement.

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