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Scientific American, Vol. 41, No. 4 (1879) (1879)

leaf 10

An illustration from Scientific American, Vol. 41, No. 4 (1879), 1879, leaf 10
go might be found thus traced and recorded. and railway to the furnaces and concentrating works, being | of such protuberances on the edge most chipped of these Mr. Cushing then closed his remarks by calling attention a continuous falling until the ore is changed into bullion. to the use of the… … distinguish it from chipping produced by percussion. And satisfactorily complied with by the new process, and that the its discovery removes most of the difficulties which previous 1. Mass and flake; 2. Leaf form; 3. Surface flaking; 4. Flaker, upper employment of the electric light in photographic…

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