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THREE:"A man in the morning room," gasped Hetty. "A man with a horrid crooked nose and hands all over queer orange spots. Shall I alarm the house----"Let us now see how he carries this passionate enthusiasm for knowledge into the humblest researches of zoology:��

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THREE:Irregularity of cooling may be the result of unequal conducting power in different parts of a mould or cores, or it may be [98] from the varying dimensions of the castings, which contain heat as their thickness, and give it off in the same ratio. As a rule, the drag or bottom side of a casting cools first, especially if a mould rests on the ground, and there is not much sand between the castings and the earth; this is a common cause of unequal cooling, especially in large flat pieces. Air being a bad conductor of heat, and the sand usually thin on the cope or top side, the result is that the top of moulds remain quite hot, while at the bottom the earth, being a good conductor, carries off the heat and cools that side first, so that the iron 'sets' first on the bottom, afterwards cooling and contracting on the top, so that castings are warped and left with inherent strains."I shall wake up presently and find it a dream," said Bruce. "If you had been present at the interview you could not have described it better."

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THREE:Motion or power may be varied to almost any degree by the ratio between the pistons of pumps and the pistons which give off the power, the same general arrangement of machinery answering in all cases; whereas, with gearing the quantity of machinery has to be increased as the motive power and the applied power may vary in time and force. This as said recommends hydraulic apparatus where a great force is required at intervals, and it is in such cases that it was first employed, and is yet for the most part used.The explanation of this anomaly is, we believe, to be found in the fact that Catholicism did, to a great extent, actually spring from a continuation of those widely different tendencies which Epicurus confounded in a common assault. It had an intellectual basis in the Platonic and Stoic philosophies, and a popular basis in the revival of those manifold superstitions which, underlying the brilliant civilisations of Greece and Rome, were always ready to break out with renewed violence when their restraining pressure was removed. The revival of which we speak was powerfully aided from without. The same movement that was carrying Hellenic culture into Asia was bringing Oriental delusions by a sort of back current into the Western world. Nor was this all. The relaxation of all political bonds, together with the indifference of the educated classes, besides allowing a rank undergrowth of popular beliefs to spring up unchecked, surrendered the regulation of those beliefs into the hands of a78 profession which it had hitherto been the policy of every ancient republic to keep under rigid restraint��the accredited or informal ministers of religion.154 Now, the chief characteristic of a priestly order has always and everywhere been insatiable avarice. When forbidden to acquire wealth in their individual capacity, they grasp at it all the more eagerly in their corporate capacity. And, as the Epicureans probably perceived, there is no engine which they can use so effectually for the gratification of this passion as the belief in a future life. What they have to tell about this is often described by themselves and their supporters as a message of joy to the weary and afflicted. But under their treatment it is very far from being a consolatory belief. Dark shades and lurid lights predominate considerably in their pictures of the world beyond the grave; and here, as we shall presently show, they are aided by an irresistible instinct of human nature. On this subject, also, they can speak with unlimited confidence; for, while their other statements about the supernatural are liable to be contradicted by experience, the abode of souls is a bourne from which no traveller returns to disprove the accuracy of their statements.

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THREE:His analysis of individuality was the first step in this direction. We have seen that he treats definition as a process of gradual specification, beginning with the most general notions, and working down by successive differentiations to the most particular. Now, the completed conception is itself the integration of all these differences, the bond of union holding them together. Turning to an antithetical order of ideas, to the material substance of which bodies are composed, and its various transformations, we find him working out the same vein of thought. According to the Aristotelian chemistry, an ultimate indeterminate unknowable something clothes itself with one or other of the opposing attributes, dry and moist, hot and cold; and when two of these are combined, manifests itself to our senses as one of the four elements. The elements combine in a particular manner to form homogeneous animal tissues, and these again are united into heterogeneous organs, which together constitute the living body. Here, then, we have two analogous series of specifications��one conceptual and leading down from the abstract to the concrete, the other physical, and leading up from the vague, the simple, and the homogeneous, to the definite, the complex, and the heterogeneous. Aristotle embraces both processes under a single comprehensive generalisation. He describes each of them as the continuous conversion of a346 possibility into an actuality. For the sake of greater clearness, let us take the liberty of substituting modern scientific terms for his cumbrous and obsolete classifications. We shall then say that the general notion, living thing, contains under it the two less general notions��plant and animal. If we only know of any given object that it has life, there is implied the possibility of its being either the one or the other, but not both together. On determining it to be (say) an animal, we actualise one of the possibilities. But the actualisation is only relative, and immediately becomes the possibility of being either a vertebrate or an invertebrate animal. The actuality vertebrate becomes the possibility of viviparous or oviparous, and so on through successive differentiations until we come (say) to a man. Now let us begin at the material end. Here are a mass of molecules, which, in their actual state are only carbon, nitrogen, and so forth. But they are potential starch, gluten, water, or any other article of food that might be named; for under favourable conditions they will combine to form it. Once actualised as such, they are possible blood-cells; these are possible tissues; these, again, possible organs, and lastly we come to the consensus of vital functions, which is a man. What the raw material is to the finished product, that are the parts to the entire organism, the elements to the compound, the genus to the species, and such in its very widest sense is potency to realisation, δ?ναμι? to ?ντελ?χεια, throughout the universe of growth and decay.246

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