THREE:The arrangement of patterns with reference to having certain parts of castings solid and clean is an important matter, yet one that is comparatively easy to understand. Supposing the iron in a mould to be in a melted state, and to contain, as it always must, loose sand and 'scruff,' and that the weight of the dirt is to melted iron as the weight of cork is to water, it is easy to see where this dirt would lodge, and where it would be found in the castings. The top of a mould or cope, as it is called, contains the dirt, while the bottom or drag side is generally clean and sound: the rule is to arrange patterns so that the surfaces to be finished will come on the bottom or drag side.The alliance between Neo-Pythagoreanism and Stoicism did not last long. Their fundamental principles were too radically opposed to admit of any reconciliation, except what could be effected by the absorption of both into a more comprehensive system. And Roman Stoicism, at least, was too practical, too scientific, too sane, to assimilate what must have seemed a curious amalgam of mathematical jugglery and dreamy asceticism; while the reputation of belonging to248 what passed for a secret society would be regarded with particular dread in the vicinity of the imperial court,it was, in fact, for this particular reason that the elder Seneca persuaded his son to renounce the vegetarian diet which Sotion had induced him to adopt,and the suspicious hostility of the public authorities may have had something to do with the speedy disappearance of Neo-Pythagoreanism from Rome.388 On the other hand, so coarsely materialistic and utilitarian a doctrine as that of the Porch, must have been equally repulsive to the spiritualism which, while it discerned a deep kinship permeating all forms of animal existence, saw in the outward conditions of that existence only the prison or the tomb where a heaven-born exile lay immured in expiation of the guilt that had driven him from his former and well-nigh forgotten abode. Hence, after Seneca, we find the two schools pursuing divergent directions, the naturalism of the one becoming more and more contrasted with the spiritualism of the other. It has been mentioned how emphatically Marcus Aurelius rejected the doctrine of a future life, which, perhaps, had been brought under his notice as a tenet of the Neo-Pythagoreans. The latter, on their side, abandoned the Stoic cosmology for the more congenial metaphysics of Plato, which they enriched with some elements from Aristotles system, but without in the least acknowledging their obligations to those two illustrious masters. On the contrary, they professed to derive their hidden wisdom from certain alleged writings of Pythagoras and his earlier disciples, which, with the disregard for veracity not uncommon among mystics, they did not scruple to forge wholesale. As a consequence of their unfortunate activity, literature was encumbered with a mass of worthless productions, of which many fragments still survive, mixed, perhaps, with some genuine relics of old Italiote speculation, the extrication of which is, however, a task of almost insuperable difficulty.
Donec sit amet ligula enim. Duis vel condimentum massa.
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