International Correspondence Schools · Scranton, Pa. : The Colliery engineer co. · leaf 394
ury docs not. Ifthe rod be greased and placed in water, the surface of thewater will be depressed about the rod. If a clean lead orzinc strip be placed in mercury, the surface of the mercurywill be raised abcnit the strip. In the last two cases, the greased rod came out dry, nowater adhering to it,…
Railroad engineering
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