MINERALOGY. 30 



specimen united with the green carbonate. The natives 

 say it is found in Province Amherst, but I have seen it 

 only in specimens from Cheduba near the coast of Arra- 

 can. 



BLUE VITRIOL, or BLDKSTONE. 



Blue vitriol is imported from Burmah, and seen in all the 

 bazars, but is not a production of the Provinces. 

 Sulphate of copper. 



HBP* 



LEaD. 



The limestone of the Provinces probably contains large 

 quantities of lead. In the valley of the Salwen, there is a 

 rich vein of argentiferous galena, which is reported to 

 appear on the surface. A specimen that Dr. Morton sent 

 to England for analysis, was said to be a very valuable 

 mineral, and destined to make a fortune for some one. 

 Professor Mitchell in the certificate that he furnished Dr 

 Morton of the analysis, says : " It contains 



Lead, 



Sulphur, 



Silver, 



Gold, (traces,) 



m„„™;« £ Carbonic acid, 



Magnesia, ) 



Iron, 



Silica. 

 It is a sulphuret of lead or galena. The quantity of 

 lead and silver appears to be considerable, but there was 

 not sufficient of the mineral to estimate either." The ore 

 is seen in the limstone, precisely as galena is found in the 

 limestone of the Mississipi, one of the richest known depo- 

 sits of lead in the world. 



Mr. O' Riley states that the carbonate of lead exists near 

 the head waters of the Ploungdarau. 



*9<Sn bvySi SLOdl. y$c^» 



