OF ARKAXSA.-*. 



159 





in determining the amount of iron and silver, compare " methods of 

 analysis," below. 



A-— GALENA FROM MARION COUNTY. 



No. 11. Galena, from Wood's mine, section 13, township 19 north, range 

 17 west, west branch of George creek: 



Occurs in the dolomite No. 34. Is pure sulphurct of lead without any 

 impurity but a trace of silver. The lead, smelted from the ore, contains 

 0.00624 per cent, of silver, equal to 1.G7 ounces of silver in the ton of 

 galena (1 ton=2,000 ft>s). 



No. 12. Galena, from the New York company's diggings: 

 Is pure sulphuret of lead, with a little sulphuret of iron, corresponding 

 to 0.103 per cent, of metallic iron. The lead, smelted from the ore, con- 

 tains 0.0106G per cent, of silver, equal to 2.88 ounces of silver in the ton 

 of galena. 



No. 13. Galena, from Molton's diggings, one mile above the fork of 

 Jemmy's creek: 



Is pure sulphuret of lead with a little sulphurct of iron, corresponding 

 to 0.10 per cent, of metallic iron. The lead, smelted from the ore, contains 

 0.0020 1 per cent, of silver, equal to 0.784 ounces of silver in the ton of 

 galena. 



No. 14. Galena, from Seawell's di^in^s: 



Is pure sulphuret of lead, without any impurities but a small quantity 

 of silver. The lead, smelted from the ore, contains 0.14014 percent, of 

 silver, equal to 37.44 ounces of silver in the ton of galena. 



No. 15. Galena, from Hudson's diggings: 



Is pure sulphuret of lead with only traces of iron and silver. The lead, 

 smelted from the ore, contains 0.00746 per cent, of silver, equal to 2 

 ounces of silver in the ton of galena. 



No. 10. Galena, from McCarty's diggings: 



Is pure sulphuret of lead, without any impurities but a trace of silver. 

 The lead, smelted from the ore, contains 0.00825 per cent, of silver, equal 

 to 2.25 ounces of silver in the ton of galena. 



No. 17. Galena, from Jemmy's creek diggings, near the forks: 

 Is pure sulphuret of lead, with a little sulphuret of iron, corresponding 

 to 0.1 per cent, of metallic iron, and a trace of silver. The lead, smelted 



