CONTKNTS. VII 



Copper — Continued. 



Copper smelting — Continued. 



Butte Copper district — Continued. 



Parrott Smelter 107 



Bell Smelter 107 



Arizona Copper district 108 



Copper Queen Mine and Smelter 108 



Ansonia Refinery 109 



Wet process of copper extraction 109 



Hunt & Douglas 109 



Application of copper Ill 



Ansonia Brass and Copper Company HI 



Iron : 



Iron minerals 112 



Magnetite 112 



Hematite 112 



Limonite 113 



Turgite 113 



Siderite 113 



Pyrite , 114 



Iron ores 114 



Tenth Census collection — 



Maine llf, 



Vermont 115 



Massachusetts 116 



Rhode Island 116 



Connecticut 116 



Xew York 117 



Clinton County ,. 117 



Essex County 117 



Washington County 11,S 



St. Lawrence County US 



Jefferson County ; US 



Oneida County 119 



Wayne County 119 



Columbia County lU) 



Dutchess County 119 



Putnam County , 119 



Orange County 120 



Richmond County 120 



Ne v,- Jersey 120 



Sussex County 120 



Passaic County 121 



Morris County ...•,.... 121 



Warren County 122 



Pennsylvania 123 



Lehigh County 123 



Berks County 123 



Chester County 124 



Lebanon County 124 



Lancaster County 125 



Lycoming County 125 



Montour County 125 



Snyder County 125 



York County 125 



