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Scientific American, Vol. 68, No. 3 (January 1893) (1893)

leaf 7

An illustration from Scientific American, Vol. 68, No. 3 (January 1893), 1893, leaf 7
ine can of any kind, intentional or accidental, are liable to screen of black paper, with two apertures of about the run through agricultural lands with no more interfer- occur. size and shape of the lenses of an eyeglass, see Fig. 2, In the Pruyn method of operating the electric power ence with… … PRUYN'S ELEVATED ELECTRIC RAILWAY. lamp or gas light the lamp nearly over the curbs on should have a plain porce- each side of the street. dinary ground circuit. Instead of the return current lain or ground glass globe, or a piece of smooth white The structure is a permanent way. Once made, it is…

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