340 



LEAD. COPPER. 



remain undescribed, we can briefly notice but a 

 few. 



Lead — Lead is found in numerous places in the 

 United States, but in few, however, in quantities 

 sufficient to render its working profitable. It has 

 been worked at Southampton and near Middletown 

 (Connecticut), also in several places in Dutchess 

 county (New- York), and at the Perkiomen Mine in 

 Pennsylvania. The most valuable locality of this 

 mineral in the State of New- York is at Rossie, in 

 St. Lawrence county, where a vein two feet wide 

 penetrates a ledge of rocks fifty feet high, and ex- 

 tends to an unknown depth. 



One of the most extensive deposites of lead 

 on the globe exists in what is called the Mineral 

 District of Missouri, which comprises parts of the 

 counties of Washington, St. Genevieve, Jefferson, 

 St. Francis, and Madison, extending a distance of 

 about seventy miles in length, and from the Missis- 

 sippi, in a southwesterly direction, about fifty miles 

 in breadth. Besides a great abundance of lead, this 

 region contains also iron, manganese, zinc, anti- 

 mony, arsenic, plumbago, &c. The lead ore is the 

 galena or sulphuret of lead. It is found in loose de- 

 tached masses in the soil, and not in veins, in rocks, 

 as it usually occurs, and yields about seventy per 

 cent, pure lead, and an annual product of several 

 million pounds. 



The total amount of lead from the United States 

 lead-mines in Missouri, from 1825 to 1832, was 

 5,151,252 pounds; and from 1821 to 1836, the pro- 

 duct of the lead-mines of Fever River amounted to 

 70,420,357 pounds, giving a total from both these 

 sources of 75,571,609 pounds. 



Copper. — Copper is found in many places in this 

 country, in connexion with lead and zinc, as at the 

 Perkiomen lead-mine* (Pennsylvania), Schuyler's 



* There are indications of a rich deposite of copper nea. 

 Rossie, St. Lawrence county, New- York. 



