MANGANESE. CHROMIUM. 



PLATE II. 



Potassium permanganate solution, 

 more or less saturated. Boraxbead colored 

 by manganese. 



Manganous sulphide, precipitated 

 from manganous solutions by ammonium 

 sulphide. 



Manganous hydroxide, passing into 

 the higher oxides. Manganous solution* 

 precipitated by alkali hydroxides. 



Potassium dichromate solution de- 

 oxidized by reducing agents. 



Chromic hydroxide, precipitated 

 from chromic solutions by alkali hydrox- 

 ides. 



Lead chromate, precipitated from 

 soluble cbromates by lead acetate. 



Silver chromate, precipitated from 

 neutral chromates by silver nitrate. 



Mercurous chromate, precipitated 

 from neutral chromates by mercurous bolu- 

 tious. 



, I.,rli tiolniuorf, . IM 



