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Scientific American, Vol. 71, No. 8 (1894) (1894)

leaf 7

An illustration from Scientific American, Vol. 71, No. 8 (1894), 1894, leaf 7
. Pig iron difference tha.t exists between the various individuals mitted to the section, the lower door is dropped and is sometimes piled on to increase the weight. As it of the same class. It is said that if our power of vision the bucket descends. The air lock which we have just goes down, a new… … self. Its lower end is closed by a door opening down- might all work together for the general good! They AMERICAN SURETY COMPANY’S BUILDING, ward, similar to those already described, while its forget that, were this possible, there would be no con- NEW YORK CITY. upper end is closed by two heavy…

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