" roasting of, 65. Chambers’ briquette machine, 56, 57. Changes during bessemerising, 206–210, 215, 216. Channelling in reverberatory grates, 86, 101. Channing, J. Parke, 170, 186, 191. Charge for blast furnaces, 130, 146, 147, 150, 151, 187, 211. " " blast roasting, 58, 111, 112. " " converters, 212, 213. " " pyritic smelting, 178–180, 187, 188. " " reverberatories, 102, 110–112. " " roaster furnaces, 76–79, 111, 112. " " sintering, 58, 111, 112. " -cars, 141, 153–156, 186. " -sheets, 153, 157, 158, 187. " trains for blast furnaces, 156–158. " " reverberatories, 99. Charging of blast furnaces, 140, 146, 153–158, 179, 186, 188. " of converters, 198, 199, 207, 208, 212–214. " of refining furnaces, 240. " of reverberatories, 85–87, 91–105 " -doors, 141. " -platform, 141. Checking of operations, 47. Chemical properties, 18, 33. Chili bar, 43, 44. " copper ores, 46. " " production, 15. " supplies of copper from, 7, 15, 45, 46. Chilling in blast-furnace hearths, 115, 117. " converters, 195, 199, 210, 212. " settlers, 117. China, 45. Chlorine and copper, 33. Chromite linings, 162. Circulation of electrolyte, 232–236. Claying of reverberatories, 95. Clean slags, 131–133, 148, 149, 188, 211. Cleaning of electrolytic tanks, 238. Cleaning-out of pyritic furnaces, 178–179. Clinkering of reverberatory fire-grates, 84, 85, 101. Cloud, T. C., 80. Coal for reverberatory furnaces, 89, 90, 101–102, 105. " consumption in reverberatory work, 84, 102, 105. Coaling of reverberatories (see _Firing_). Cobalt in copper, 23, 217. Coinage alloys, 21. Coke charging in blast furnaces, 153, 158. " consumption in the blast furnace, 119–122, 143, 151, 152, 158, 169, 177, 178, 182, 187. " in the blast furnace, 121, 129, 143, 147. " in pyritic smelting, 169, 173, 174, 178, 180–184, 187, 188, 191. " recovery from reverberatories, 101. " used in briquettes, 57, 101. Cold rolling of copper, 31. Collection of slimes, 238. Colorado, practice in, 17. Colour of converter flame, 205, 207, 209, 210, 216. " copper, 23. Colour of matte, 39. Commercial copper, 29, 39, 44, 238. Composition of anodes, 217, 230–233, 238. " blast-furnace charges, 150–152. " blast-furnace gas for acid-making, 189–191. " blast-furnace slags, 147–153, 179, 180, 188. " briquettes, 57. " cathodes, 230, 232, 233. " charges for pyritic smelting, 173–176, 180, 187. " charges for reverberatory smelting, 82, 102, 108–112. " charges for blast-roasting, 111, 112. " converter copper, 218. " copper, 31, 34, 39, 40, 44, 217, 218, 230, 238. " " for fire-boxes, 19, 20, 34.