W.A. Turner — Vanadium Determined by Cupferron. 343 



Table IV. 



Exp. 



Gms. Na 3 V0 4 Gms. of V 2 5 

 solution taken found 



Gms. of V2O5 per 

 25 gms. of solution 



Without Eeduction 



15 

 16 



20-1067 0-0873 

 20-4030 0-0882 





0-1085 

 0-1081 



With Eeduction 



17 



18 



54-1156 0-2300 

 46-2709 0-1954 





0-1063 

 0-1056 



The filtrate from Exp. 17 was evaporated and the residue 

 ignited. A solution of this residue gave with cupferron a dis- 

 tinct test for vanadium. 



Kent Chemical Laboratory, Yale University. 



