Smithsonian Report, 1896. 



Plate XXIV. 



Interior of furnace containing molten chromium, as is seen either 

 by reflection on a screen or by looking into the furnace from 

 above, the eyes being suitably protected by deeply tinted glasses. 



In this case the arc was broken just before the photograph was 

 taken. The furnace contained a bath of silver just at its boiling 

 point. The reflection of the poles in the bath, the globules of 

 distilled silver, and the drifting cloud of silver vapor, are well 

 shown. 



Rarer Metals and their Alloys. 



