ElvISHA MiTCHKIvI. SCIE:NTIPIC SOCIETY. 5 



2. Two grams xirconia fused with sixteen o-rams 

 sodium carbonate for four hours. Amount of residue 

 soluble in hydrochlroic acid, 0.3042 grams. Percentag-es: 

 ZrO,, 74.18; Na,0, 25.81. These correspond fairly with 

 (ZrO,)3(Na,0)3. 



3. Two o'rams zirconia fused with sixteen o-ranis so- 

 dium carbonate for eig-ht hours. Amount soluble in di- 

 lute hydrochloric acid 0.1220 g-ram, or six per cent. 

 Percentag-es: ZrO„ 58.16; Na,0, 41.84. 



II. WITH POTASSIUM CARBONATE. 



When potassium carbonate was used the action was so 

 slig^ht that it was not possible to gfet enougfh for analysis. 

 In one case, after heating- for ten hours, the amount solu- 

 ble was just one-half per cent. This accords with the 

 observation of Ouvrard. 



Of course it is possible that the leaching* with water 

 had a partially decomposing* effect upon the zirconates. 

 Very little could be justly concluded, however, from ex- 

 periments in which there was so little action, therefore 

 the effort at forming- the zirconates by fusion with the 

 carbonates was abandoned. 



III. FUSION OF ZIRCONIA WITH HYDROXIDES. 



/'. Fusion vjith sodium hydroxide. 



Here considerable action was noticed. The fusions 

 were made in a silver dish. The heating- was kept up un- 

 til the mass became semi-solid. The treatment of the 

 fused mass and the analysis were carried out as before. 

 No zirconium was detected in the wash svater. 



1. Two g-rams zirconia fused with eigfht g-rams sodium 

 hydroxide. Total amount dissolved, 1.1855 grams. An 

 analysis, reduced to dry basis, g-ave ^rO^, 92.29, and NagO, 

 7.65. 



2. Same amount taken as in experiment 1. Total 

 "amount dissolved 0.7655 gram, containing- ZrOg, 93.19, 

 and Na,0, 6.22. 



