326 



Intelligence and Miscellaneous Articles. 



SEPAUATION OF THE OXIDES OF LEAD AND BISMUTH. 

 BY M. LIEBIG. 



When nitrate of lead or of bismuth is boiled with carbonate of lime, 

 magnesia, or barytes, these salts are decomposed, and the oxides are 

 so completely precipitated that hydrosulphuret of ammonia shows no 

 traces of them in the solution. Carbonate of lime, when added to a 

 cold solution of these metals, precipitates only the oxide of bismuth. 



Several methods have been proposed for separating the lead which 

 is contained in the bismuth of commerce ; but carbonate of lime, used 

 in the mode now stated, is preferable to them. — Ann, de Chim. el de 

 Phys. torn, xlviii. p. '290. 



