ELISHA MITCHELL SCIENTIFIC SOCIETY. 65 



the zirconium as the basic potassium sulphate, for the 

 reasons above noted. For want of a better method, 

 however, this was for a long- time used. 



//. By Boiling' an Acetic Acid Solution. 



Franz and Streit claimed complete separation if the 

 solution, neutralized by ammonium hydroxide, were 

 rendered strong-ly acid with acetic acid and boiled 

 sometime. The usual preliminary qualitative experi- 

 ments were carried out by the writer, and he obtained 

 a precipitate in both cases. The titanium was precipi- 

 tated directh^ and in larg*e amounts, whilst the zircon- 

 ium was also precipitated, but in small amounts. Of 

 course solutions of approximately known strength were 

 used in these experiments. When this was noted the 

 completeness of the titanium precipitation was not 

 tested. This method, therefore could not be recom- 

 mended. 



///. By Aninwninni Oxalate and Amnioiiiuni Car- 

 bonate. 



The experiments of Hermann'' were very carefully 

 repeated. The zirconium chloride solution was diluted 

 to contain one part in one hundred parts of water, and 

 to this was added double the weig-ht (of zirconium) of 

 ammonium oxalate. I did observe, as he says,"^" " Dabei- 

 enstand anfang-lieh eine Triibung", nachdem aber die 

 g-anze Ouantitat des Oxalats zug-esetzt worden war, 

 klarte sich die Fliissiofkeit wieder vollstandiof auf . Man 



25. J. Prak. Ch. 9^ 



26. Ibid, 337: 



