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FORE:��It��s peculiar,�� Larry said doubtfully. ��Nobody here��but���� a new idea struck him. Quietly he gestured toward the amphibian, old, uncared for, looking almost ready to fall apart, its doped wings stained with mould, its pontoons looking as if the fabric was rotting on them.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.

FORE:

FORE:The other alternative was to combine the dialectical idealism of Plato with the cosmology of early Greek thought, interpreting the two worlds of spirit and Nature as gradations of a single series and manifestations of a single principle. This was what Aristotle had attempted to do, but had not done so thoroughly as to satisfy the moral wants of his own age, or the religious wants of the age when a revived Platonism was seeking to organise itself into a system which should be the reconciliation of reason and faith. Yet the better sort of Platonists felt that this work could not be accomplished without the assistance of Aristotle, whose essential agreement with their master, as against Stoicism, they fully recognised. Their273 mistake was to assume that this agreement extended to every point of his teaching. Taken in this sense, their attempted harmonies were speedily demolished by scholars whose professional familiarity with the original sources showed them how strongly Aristotle himself had insisted on the differences which separated him from the Academy and its founder.407 To identify the two great spiritualist philosophers being impossible, it remained to show how they could be combined. The solution of such a problem demanded more genius than was likely to be developed in the schools of Athens. An intenser intellectual life prevailed in Alexandria, where the materials of erudition were more abundantly supplied, and where contact with the Oriental religions gave Hellenism a fuller consciousness of its distinction from and superiority to every other form of speculative activity. And here, accordingly, the fundamental idea of Neo-Platonism was conceived.