gth; but even in these either is perceptible, although a minute examination and cases the mere weight of iron and superincumbent loads strict measurement would reveal a elight variation in diame- upon the points of support reader the intended result nuga- Fig. 2. ter at the extreme base. If there… … Fah., is about one 812th of is length; at higher tempera- tures, the elongation becomes more rapid. Thus the pro- tions of the planet as regards the sun’s disk in the transit o The enlargement, if any exists, is so slight as only to be gressive dilatation of wrought iron, as determined by 1874, and…
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