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Scientific American, Vol. 65, No. 1 (1891) (1891)

leaf 9

An illustration from Scientific American, Vol. 65, No. 1 (1891), 1891, leaf 9
un ever The extensive use of street cable railways has neces- glass tube, which empties them into the wheel. built in this country, and is the first of 16 of its type The description of the filling of the wheel just given ordered by the government. It has been building since sitated the manufacture… … for seacoast defense, with the 12-inch steel mortars that idea of the exactitude and of the minuteness of the without injury, from the manufactory to the place of are also now being built. The gun weighs 52 tons. It operations which secure indisputable regularity in a use, was a serious one. is…

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