50 Mr. J. Napier on Copper Smelting. 



The preceding table of the same constituents in ores from other 

 mines brought into market, will bring out the distinguishing 

 features of the variety of ores the smelter has to operate upon. 



By comparing this table with the former, we find a far 

 greater variety of ores, and, taking the mines separately, a far 

 more distinctive character, as will be observed by comparing the 

 Cobre, Chili, and Australian together. At the same time there 

 is a decided sameness about the character of the ores from the 

 same locality, as will be seen in the Irish, the Cobre, and Bun-a 

 Bun-a. As the latter mines are probably the wonder of the pre- 

 sent age in regard to their richness and abundance, and as many 

 of the ores found in them are too poor to be brought to the smelt- 

 ing-works of this country, I here subjoin a table of analyses from 

 this mine alone, furnished me by my friend Mr. A. D. Thomas, 

 chemist at the Burra Burra smelting- works. 



It may be remarked, that the ores given in the above table 



