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Scientific American, Vol. 36, No. 9 (March 1877) (1877)

leaf 3

An illustration from Scientific American, Vol. 36, No. 9 (March 1877), 1877, leaf 3
covering of course dangerous to health. In order to determine the purity of the acid, M. Kolbe advises that about 7'7 grains be dissolved in a protects the wire from oxidation and effects of the weather. The danger of the explosion of any boiler in which scale The wire is next led to large reels.… … it is coiled thereon. The size of ern Railroad Company that the GRONIN'S BOILER CLEANER. the drum is such as to cause no new tunnel under Bergen Hill permanent bending of the wire. shall be arched with brick pounds to prevent by chemical action the deposition of scale The turning of the drum is…

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