icular to the surfaces tation in matters of this kind, with its iron bridges, its solid if such castings are exposed to heat, the crystals will change of the casting. ballasted track, steel rails, and fine shops. position and assemble in lines perpendicular to the surfaces Fig. 2 shows a view of… … the heat the more marked will be this peculiar structure, and small to be visible. In this figure you see the lines perpen- ing, of a passenger station erected recently on this line, at dicular to the bounding surfaces; but what I wish to call the law, as before stated, applies equally in this…
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