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Scientific American, Vol. 39, No. 24 (December 1878) (1878)

leaf 6

An illustration from Scientific American, Vol. 39, No. 24 (December 1878), 1878, leaf 6
. During the six would be equal to 640 candles, or 40 full power gas lights, It has been looked upon as essential that a certain distance preceding years the number of miles of track laid was: In each consuming 5 cubic feet of 16 candle gas per hour. should separate the ends of the carbon… … current. FlC.I with a hammer. The cleaned rail weighed only 398'2 lbs., This resistance increases much more rapidly than is rep- while its original weight was 4191 lbs., showing that 5 per resented by increase of distance between the carbon points. THE WEBDEBMANN LAMP. cent of the rail had been…

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