THE INDUSTRIES OF NIAGARA FALLS 



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Charles Martin Hall, 

 Inventor of the Electrolytic Process for reducing Aluminum Ore. 



comparatively simple. Into an electrolytic cell is poured common salt 

 in solution. "When the electric current passes through the brine the 

 salt is separated into its constituent elements, chlorine gas and the 

 metal sodium. The chlorine gas is evolved at the anodes of the cell 

 and being led off combines with slacked lime to form chloride of lime 

 or bleaching powder. The sodium unites or reacts with water to 

 form sodium hydroxide or caustic soda. 



When Moissan, the great French chemist, perfected the electric 

 furnace he gave to scientists an easy way of producing a temperature 

 which far exceeds that of ordinary fuel and even that of the oxy- 

 hydrogen flame, and which made possible new and useful combinations 

 and dissociations of matter obtainable in no other way than by the 

 use of intense heat. The electric furnace is used at Niagara Falls in 

 the manufacture of several new and important products. 



Among the many recent discoveries in the field of electrochemistry 



