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Scientific American, Vol. 75, No. 13 (1896) (1896)

leaf 8

An illustration from Scientific American, Vol. 75, No. 13 (1896), 1896, leaf 8
e were two houses, both of which were volves. The silver to be re- exposed to sunlight during fined is first treated by ordi- the day, and one of which nary well known metallurgi- received in addition the light eal processes to reduce the from an are lamp during a quantity of other metals pres-… … Mr. Rawson, a fancy truck frame near the bottom of CALUMET AND HECLA SMELTING WORKS. each cell catches the silver as farmer near Boston, now uses it is removed trom the cath- the electric light in the com- odes by a mechanically moved wooden scraper. The mercial forcing of lettuce. He has three…

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