82 



JOURNAL OF THE 



or, calculated on a dr}' basis: 



The above results show that his preparations were 

 indefinite oxychlorides or mixtures, in varying- propor- 

 tions of zirconium tetrachloride and oxychloride. 



Bailey repeatedly crystallized the chloride from hy- 

 drochloric acid, washed it with hydrochloric acid and 

 then removed the free acid. 



1. By washing- with a mixture of one part alcohol and 

 ten parts of ether. 



2. B\^ g-ently heating- the salt. 



3. By exposing fhe finely divided salt at ordinary 

 temperatures in a vacuous, dessicator over potash, until 

 no hydrochloric acid appeared when air passed over it. 



The analysis was performed by dissolving- the salt in 

 water and precipitating- the zirconia with ammonia, 

 then acidulating- with nitric acid and precipitating' the 

 chlorine l\y means of silver nitrate. B}^ method 2 a 

 constant and prog-ressive diminution of chlorine was 

 observed. Therefore no analyses were made. For the 

 other methods he gives the results of the analyses by a 

 statement of the ratio of Zr02 to A^-Cl: 



ZrO 



Berzeliu's determination 

 Bailey's method 1: 



Method 2: 



Method 2 without washing-; 



ZrOCl 



Ag-Cl 

 1.991 

 2.260 

 2.206 

 2.179 

 2.226 

 2.260 

 2.264 

 2.245 

 2.309 

 2.285 

 2.350 



