1906.] 



WHERRY AND SMITH— USE OF ROTATING ANODE 



269 



From both of these electrolytes the precipitation is not only 

 complete but exceedingly rapid ; hence, this method for the deter- 

 mination of uranium will recommend itself to the mineral analyst. 

 The following curve was plotted from the preceding experiments. 



— 7 



1^1 I I M I I 1 1 M I 



Curve I. Rate of deposition of Uranium Sesquioxide. 



11. Molybdenum. 



From acidulated molybdate solutions the hydrated susquioxide 

 is completely precipitated as an adherent deposit on the cathode. 

 This procedure has given an excellent and satisfactory method for 



Curve II. Rate of deposition of Molybdenum Sesquioxide, 



