Day, etc. — Determination of Mineral 



Fig. 2. 



,-, THERMO-ELEMENT 

 TUBE 



C* WATER 



+VSCALE 



^fe_^ ^— WATER 



O GALVANOMETER 



TO*^ 

 PAN W FIG 1 



Fig. 2. Carbon-tube electric furnace for apparatus of fig. 1. 



