893.] 



Ou the Metallurgy of Bismuth. 



469 



A point of much interest in relation to molecular physics became 

 evident in the course of the investigation. Arsenic, as is well 

 known, volatilises at the comparatively low temperature of 180 C., 

 without passing through the molten state. Arsenic is not, bowever, 



2 i 2 



