1895.] 



the Rarer Metals arid their Alloys. 



507 



Fig. 3. — This represents the interior of the 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. 



Fig. 4. — In this case the arc was broken the instant before the photograph 

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

 boiling point. The reflection of the polea in the bath, the globules 

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

 shown. 



