32 MINERALOGY 



ACIDIFEROUS ALKALINE MINERALS. 



SALTPETRE. 



Saltpetre is found in some of the caves and is imported 

 from Rangoon. 

 Nitre* 



Nitrate of potash. 

 Prismatic nitre. 



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NATRON. 



Natron is abundant in the vicinity of Ava, where it i» 

 used by the Burmese instead of soap, and they call it "earth 

 soap." 



Carbonate of soda. 



BORAX. 



Borax is seen in the bazar but it is imported 



Borate of soda. 

 Tincal, (unpurified.) 



ROCK SALT. 



Rock salt is also seen among the drugs, being used by 

 the natives in medicine. 



Chloride of sodium. 

 Muriate of soda. 



SAL AMMONIAC. 



Sal ammoniac is not a product of the Provinces, but it 

 is sold by the druggists. 



Muriate of ammonia. 



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