" 51.—Freeland Charger-Details, 157 " 52.—Slag Spout, showing Method of Trapping Blast, also Replaceable Nose-Piece of Spout (A), 159 " 53.—Details of Slag Spout, Cananea, 161 " 54.—Slag Spout, showing Method of Support, 161 " 55.—General View of Settler (T. E. Co.), 163 " 56.—Method of Lining Settler, Cananea, 163 " 57.—Arrangement for Matte and Slag Discharge from Settlers (T. C. C.), 164 " 58.—Tap-hole Casting and Detail for Settlers, 165 " 59.—Anaconda Blast Furnace (51 feet long), showing Settlers, _Plate to face_ 166 " 60.—Hoppers of Flue-Dust Chambers and Tracks for Cars underneath, 167 " 61.—Slotted Tuyeres, 12 inches by 4 inches (T. C. C.), 185 " 62.—Sectional Elevation and Plan of Barrel-Shaped Silica-Lined Converter (Peters), 196 " 63.—Latest Form of Silica-Lined Barrel Converter, 197 " 64.—Longitudinal Section of Basic-Lined Converter, 198 " 65.—Basic-Lined Converter, indicating Tuyeres, Lining, &c., 199 " 66.—Composition of a Charge during Bessemerising Operation, 208 " 67.—Pouring Slag, Anaconda, 209 " 68.—General View of Converter Shop, Anaconda, _Plate to face_ 214 " 69.—Sectional Plan, Elevation, and Transverse Sections of Refining and Anode-Casting Furnace, Anaconda (Peters), 220 " 70.—Indicating Tilting and Pouring Mechanism of Ladle of Casting and Refining Furnaces, 225 " 71.—Walker’s Anode-Casting Machine, _Plate to face_ 226 " 72.—General View of Tank-room of Electrolytic Refinery (Perth Amboy, N.J.), _Plate to face_ 226 " 73.—Indicating Methods of Suspending and Connecting Electrodes (Perth Amboy, N.J.), 234 " 74.—Indicating Connections for Circulation of Electrolyte (Barnett), 235 " 75.—Tank-house, showing Anode Crane (Ulke), 237 " 76.—Microstructure of Commercial Copper containing Oxygen (Hofman), _Plate to face_ 242 TABLES.