6 JOURNAIv OF THE 



3. Two oframs zirconia and sixteen grams sodium hy- 

 droxide. Amount dissolved 0.8004 gram, containing- ZrO.^, 

 92.57, and Na,0, 7.38. 



4. Two g-rams zirconia were fused with eight grams 

 of sodium dioxide, instead of the hydroxide. Amount dis- 

 solved 0.7074 g-ram, and this contained 91.21 per cent. 

 ZrO,. 



Na.,0.(ZrO,), contains ZrO„ 29.30; ans NaF.„ 7.80. 



Na30.(2;rO,), contains ZrO,' 93.29; and Na^O, 6.79. 



2. Fiisioii zvith potassiii))! hydroxide. 



These were carried out in a manner similar to those 

 with sodium hydroxide and the action seemed to be about 

 the same. In each experiment two g^rams of zirconia were 

 taken and fused with sixteen g-rams of potassium hydrox- 

 ide. 



1. Dissolved by hydrochloric acid 0.8850 g-ram which 

 contained 79. 63 pe^r cent. 2^rO.,, 



2. Dissolved 1.5241 grams which contained ZrO,, 82.98 

 K,0, 17.00. 



3. Dissolved 1.2078 grams which contained ZvO.,, 78.59 

 K,0, 21.40. 



4. Dissolved 0.9297 g-ram which contained 2rO,, 85.51 

 K,0, 14.49. 



In analyzing these alkaline zirconates the water pres- 

 ent was not determined. The moist powder was treated 

 with hydrochloric acid, the insoluble portion caug-ht upon 

 a filter, and the zirconia and alkali determined in the fil- 

 trate and the results calculated upon a dry basis. If the 

 analysis g-iven by Hiortdahl is calculated upon a dry basis, 

 it gives for ZvO., 93. 51, and NagO, 6.49, or very nearly the 

 the numbers g-otten in experiment 2 in the fusions with 

 sodium hydroxide. 



It is difficult to interpret the results of these fusions 

 with the alkaline carbonates and hydroxides. The fusions 

 do not yield the same definite results each time, and in- 

 deed it cannot be claimed from the analyses that definite 

 zirconates have been prepared. Some allowance must be 



