None
276, 277 ; reduction of in smelting calcined lead ores, i. 340 ; smelting of oxidised ores, i. 412, 413 oxide, action on cuprous oxide, i. 7 ; action on cupric oxide, i. 8 ; action of cuprous sulphide, i. 10 ; reduction of in zinc distillation, ii. 86 red-, i. 277 silicate, chemical reactions of, i. 280, 281 ; reduction in smelting calcined lead ores, i. 340 slags, from smelting lead ores, com- position of various, i. 344-348 ; treatment of, in smelting process, i. 378 et Htq. ; composition of, from blast furnace process, i. 381, 382 ; from Langelsheim and Goslar, i. 386 ; composition of, from Laubenthal and Clausthal, i. 404, 407 et acq. ; smelt- ing of, i. 420, 421 -speiss, produced in lead ore smelting, i. 381, 389 sulphate, chemical reactions of, i. 280 ; composition and localities of, i. 283 ; extraction of lead from, i. 284, 322 ; smeltine of, i. 416-418 ; reduction of, in zinc distillation, ii. 87 sulphide, chemical reactions, i. 277- 'iSO ; reduction of, in smelting cal- cined lead ores, i. 340, 341 Lead, Work-, i. 285 ; from Alexisbad, composition of, i. 410, 411 ; con- centration of silver in, i. 422 ; pro- duction of, from ores, i. 471-485; from rich silver ores, i. 472-474 ; method of leading in crucibles, i. 473 ; production of silver-lead alloy in lead baths, i. 473, 474 ; from ores of meilium silver percentage, i. 474- 480; from poor silver ores, i. 480- 485; from metallurgical bye-products, i. 485-502 ; leading of mattes, i. 485- 489 ; smelting of mattes with mate- rials containing lead, i. 489-495 ; desilverising mattes by means of lead and copper conjointly, i. 495 ; pro- duction of work-lead from speiss, i. 495, 496 ; desilverisation of alloys by lead, i. 496 ; liquation process for desilverising copper-silver alloys, i. 497-502 ; production of work -lead from other metallurgical products, i. 502 concentration of silver in, i. 502 et seq. ; Pat tinson processes, i. 503-514; Rozan process, i. 514-519 ; desilver- ising by means of zinc, i. 519-522 ; production of silver-leiul-zinc alloy, i. 522 et seq. ; desilverising process, i. 528-533 ; liquation of zinc scums, i. 533-538 ; treatment of desilverised lead, i. 538, 539 ; production of rich lead from zinc alloy, i. 539 et seq. ; distillation of zinc scums, i. 540-548 ; smelting rich scums, i. 548, 549; cupellation of zinc scums, i. 549 ; oxidation of zinc by steam, i. 550- 552 ; lixiviation of zinc oxides, i. 552, 553 ; extraction of zinc oxides, i. 553-561 ; combined Pattinson and zinc desilverising processes, i. 561 ; production of zinc-silver alloy from work-lead, i. 561-566 cupellation of argentiferous lead, i. 566-568 ; in German furnace, i. 568- 583 ; without additions of lead J. 583- 585 ; with additions of lead, i. 585, 586 ; in English furnace, i, 586-595 ; 712 GENERAL INDEX refining of blicksilber, i. 596-601 ; ex- traction of silver by conversion into a silver-lead alloy, i. 601 et seq. Leading of rich silver ores in crucibles, i. 473 ; of silver mattes, i. 485-495 ; of argentiferous copper, i. 497, 498 Leblanc soda works, treatment of resi- dues in precipitation of copper, i. 209 ; nickel extraction at, ii. 579 Ledebur, on alloys of tin and copper, i. 3 ; on melting point of bismuth, ii. 347 ; on britannia-metal, ii. 436 ; on effect of oxygen on nickel, ii. 498 Lederer and Nesseny, manufacturers of the Mitter condenser, ii. 321 Lehigh Zinc and Iron Co., the. Pa., heap- roasting of zinc blende by, ii. 39 ; extraction of zinc white by, ii. 226 Leibius, on gold-parting by chlorine gas, i. 850 Leichsenring, on filtration of tin, ii. 416 von Leithner, designer of Idriau furnace, ii. 273 Lenz, on Russell process, i. 734 Leob, on furnace for calcining zinc blende, ii. 47» Leopold's furnaces, ii. 273, 274,* 275* Le I*lay, on Welsh process of copper smelting, i. 138, 139 ; on smelting coarse metal for white metal, i. 140, 141 ; on composition of coarse copper, i. 146 ; on composition of moss copper, i. 149 Lesoinne, proposal for improvement in zinc extraction, ii. 185 Letrangc, on electrolysis of zinc, ii. 198, 210 et seq, Leucopyrite, ii. 476, 477, 481 Levat, on oxidation of coarse nickel matte, ii. 537 n ; on refining nickel matte, ii. 542 7i ; on production of copper-nickel alloys, ii. 545, 546 ; on production of crude nickel, ii. 552 Lichtenberg, on alloys of bismuth, ii. 351 Liebig, on manufacture of artificial cmnabar, ii. 344 ; on the precipita- tion method of antimonv reduction, ii. 457 Liebig and Eichhom furnace, for zinc calcinations, i. 85 ; for calcination of zinc blende, ii. 63, 64*, 65 Li^ge furnace, the, ii. 112, 113*, 114», 127 von Lill, on composition of crude tin from Schlaggenwald, ii. 406 ; com- position of slag from Schlaggenwald, li. 412 Linnaeite, ii. 599 Lime, action on cuprous chloride, i. 12 ; on cupric chloride, i. 13; reduction in calcination of copper pyrites, i. 26 ; effect of, in smelting calcined copper ores, i. 90 ; mi& of, for precipitation of copper, i. 209; action in smelting calcined lead ores, i. 341, 343, 345, 346 ; action in iron-reduction process of lead ex- traction, i. 395; action with zinc sulphide, ii. 11 ; with zinc sili- cate, ii. 11 ; reduction of, in zinc distillation, ii. 87 ; action with mer- curic sulphide, ii. 253 ; extraction of mercury by heating cinnabar with, ii. S2S-S29 Lindemann, on electrolysis of zinc, ii. 207, 212 et seq. Lipowitz, on effect of cadmium on alloys, ii. 241 n ; on alloys of bismuth, ii. 351 Liquation pots, for reduction of antimonv, U. 439, 440* Litharge, chemical reactions of, i. 277 ; smeltins of, i. 423-425 ; gold-parting by sulphur and, i. 844, 845 ; fusion of zinc with, ii. 5 ; extraction of bismuth from, ii. 362, 363 Livermore furnaces, for extraction of mercury, ii. 303, 304*, 305 Li>ing8tone, on composition of slag from American lead smelting works, i. 346 Lollingite, ii. 476 Lowe, on compositions of various pure tins, 417 n Lone Elm Mining and Smelting Co.'s Works, Joplin, Jumbo furnace at, i. 318 Lone Pine Mine, Montana, combination process of silver extraction at, i. 674 Lons-bedded calciner, see Fortschaufe- lungsofen Longmaid, on production of chloride of copper in dry M'ay, i. 220 Long Tom gold Masher, i. 760, 761 Lorenz, his modification of the Silesian gas furnace, ii. 152-154* ; on electro- lysis of zinc, ii. 225 Lossen, C, on extraction of gold by bromine, i. 827 Lost Ledge Mine, the, in California, retort furnaces for mercury ex- traction used at, ii. 322 Louis, H. , on action of mercury on gold, i. 755 n ; on Berdan pans, i. 796 ; on Cornish tin-smelting furnaces, iL 395 n ; on silicate of tin, ii. 400 n ; on Chinese tin- smelting furnaces, ii. 40371 Louyet's process, in nickel extraction, ii. 576 Lower Harz fumace,the old, i. 364*, 365* ; the modem, 369, 370, 371*-374* Low furnaces, for smelting calcined copper ores, i. 98 Luckow, on electrolysis of zinc, ii. 198, 210 et seq. Ludwig, on production of smalt, ii. 609 ; his analvsis of smalts, ii. 612 ; ^e under Classen and Ludwig GENERAL INDEX 713 Luteocobaltous chloride, ii. 598 Lundborg, on separation of nickel and cobalt, ii. 602 Lunge, his English pyrites burners, i. 47, 48*, 49* ; on Hasenclever-Helbig furnace, i. 58 ; on MacDougall furnace, i. 65 ; on precipitation of copper, i. 206, 209 ; on production of chloride of copper in dry way, i. 221, 230 n ; on precipitation of copper from chloride, i. 243 H ; on manufacture, from zinc blende calcination products, of sul- phur dioxide, ii. 77 » ; on preparation of tin chloride, ii. 423 n Lynch, his test for cupellation process of argentiferous lead, i, 590* Lynch furnace, the, for cupellation process, 590*, 594 Lynen, on condensation of zinc vapour, ii. 2 ; on cost of zinc distillation in Belgo-Sileaian furnaces, ii. 105 ; his condenser, ii. 193*, 194 M MacArthur, method of copper heap roasting, i. 34* ; on his gold-extrac- tion process, i. 828 «, 829 MacArthur-Forrest process of gold ex- traction, i. 828-839 ; solution of the gold, i. 829-834 ; precipitation of the gold, i. 834-837 ; treatment of pre- cipitated gold, i. 837-839; results, i. 840, 841 McCone pan, for Washoe process, i. 658, 660* MacDougall copper furnace, disposition of ores in, i. 52, 65, 66*, 67 ; differ- ences between Haas furnace and, ii. 71 Macfarlane, his metliod of nickel extrac- tion, ii. 575 McKillop and Ellis, on tin smelting in the Straits Settlements, ii. S^n, 400w Maclaurin, on the action of oxygen on gold, i. 830 Maginiss Mine, Montana, combination process of silver extraction at, i. 674 Magistral, in patio process, i. 632 Magnesia, reduction in smelting lead ores, i. 343 ; reduction of, in zinc dis- tillation, ii. 88 ; for zinc distillation vessels, ii. 194 ; extraction of zinc by, ii. 197 ; electrolysis of zinc with, ii. 215, 216 Magnesium, chloride of, action on cuprous sulphide, i. 10 ; effect of, in smelting calcined copper ores, i. 90 Magnetite, ii. 508 ^lahler, on calcining zinc blende, ii. 46 n, 48 ?i ; on Hasenclever-Helbig fur- naces, ii. 6271 Maire, Jean, on manufacture of artificial cinnabar, ii. 344 Malachite, its lot^^lities, etc., i. 13 Mal^tra furnace for copper extraction, disposition of the ores, i. 52, 58, 69*- 61* ; Schaffher's improved, 59*-61 ; Jurisch's improved, 61, 62*, 63* ; for silver ores of Zalathna, i. 482 Maletra Chemical Co., the, method of nickel extraction adopted by, ii. 578 ; method of cobalt extraction adopted by, ii. 603 Mallet, on solidification of mercury, ii. 250 Maltman's mine, California, chlorination of gold ore at. i. 812 Manga, in patio process, i. 646 Manganese, as a purifier of nickel, ii. 595 ; oxide of, reduction of in zinc distil- lation, ii. 86 Manhes, his converters, i. 160* ; and David, their converters, i. 161*, 162 ; on nickel refining, ii. 596 Mansfeld Company, mines of the, i. 38 Marchand and Scheerer, on specific gra- vity of copper i. 1 Marchese, method for extraction of copper from matte by electrolysis, i. 257, 258*, 259*, 260 Marsac Mills, Utah, treatment of silver sulphide at, i. 732 ; Russell process, i. 737 Marsh, W., on extraction of zinc by dry and wet method, ii. 197 Martens, on manufacture of artificial cinnabar, ii. 344 Martin process, the, in manufacture of ferro-nickel, ii. 507 Marx, on furnaces used at Monteponi mines, ii. 30n Mason, on inquartation, i. 852 Massart, on double furnaces for zinc-dis- tillation, ii. 118w(117*, 118*), 127 « ; on treatment of furnace products, ii. 174, 175 Matthey, on lead-bismuth alloys, ii. 352 n ; on extraction of arsenic from cnide bismuth, ii. 370 « ; on extrac- tion of platinum, ii. 623 Matthiesen, on specific gravity of silver, i. 456; on electric conductivity of silver, i. 456 ; of gold, i. 753 ; on specific gravity of zinc, ii. 1 ; on the electric conductivity of zinc, ii. 2 ; of mer- cury, ii. 25o ; of bismuth, ii. 347 ; of tin, ii. 375 ; of antimony, ii. 431 Matthiesen-Hegeler works, see Hegeler- Matthiesen works Massicot, i. 277 Mears' process of gold chlorination, i. 816 Medina, Bartolome de, discoverer of the Patio process, i. 625 M^hu, on purification of bismuth from 714 GENERAL INDEX arsenic, ii. 370 ; from sulphur, ii. 372 Meissonier, discovered nickel in Spain, ii. 509 Melaconite, its localities, i. 13 Melanglanz, see Stephanite. Melsens, on transparency of mercury, ii. 250 ; on antidotes to poisoning from mercury vapour, ii. 263 Mendipite, i. 283 Mentzel, on impurities in commercial zinc, ii. 3 Menzler, on leading of silver matte, i. 487 Mercur mines, Utah, MacArthur- Forrest gold-extraction process, i. 837, 841 Mercury, action on silver arseniate and antimoniate, i. 463 ; alloy of silver and, i. 463 ; action of, in amalgama- tion process of silver extraction, i. 611 6^ 9€q. ; amalgamation with a soluble salt of, i. 702, 703 ; effect on gold, i. 755 (nee under Amalgama- tion) ; mercury reservoir in the Craw- ford mills, i. 776, 777* physical properties, ii. 250, 251 ; chemical properties of, and of com- pounds, ii. 251-254 ; alloys and amalgams, ii. 254 ; ores, ii. 254-259 ; furnace products, ii. 259 extraction of, in the dry way, ii. 259- 342 by heating cinnabar in the air, ii. 261- 322 ; poisonous qualities of mercury vapour, ii. 263 ; heap-roasting, ii. 264 ; condensing appliances, ii. 265- 267 extraction in shaft furnaces, i. 267- 309 ; in internally fired furnaces, ii. 268 ; in Bustamente or aludel furnace, ii. 268, 269-273 ; in Idrian furnace, ii. 273-276 ; in externally fired furnaces, ii. 277 - 278 ; in shaft-fired continuously, ii. 278 ; furnaces for lump ores, ii. 279-293 ; Exeli furnace, ii. 279-286 ; Langer furnace, ii. 286-289 ; Knox furnace, ii. 289-293 ; furnaces for ore fines, ii. 293-309 ; Huttner and Scott fur- nace, ii. 293 ; Granzita furnace, ii. 293-301 ; Tierras furnaces, ii. 301 - 303 ; Livermore furnaces, ii. 303 - 305 ; Czermak furnaces, ii. 305-309 extraction in reverberatory furnaces, ii. 309-315 ; in iron-clad rever- beratory furnaces, ii. 311-315 ; in shaft furnaces proper, ii. 315-321 ; in retort furnaces, ii. 321-322 by heating cinnabar with lime or iron in absence of air, ii. 323-329 ; pro- ducts of extraction, ii. 329-336 ; soot, ii. 329-332 ; treatment of soot, ii. 332-336 ; general arrangement of mercury works, ii. 336-341 ; composi- tion of ores at Idria, ii. 336, 337 ; extraction of mercury from mercurial fahlores, ii. 341. 342 ; from metal- lurgical products, ii. 342 extraction in wet wav, ii. 342, 343 extraction by electrolysis, ii. 34^344 manufacture of artificial cinnabar, ii. 344-346 ; effect of aluminium on, iL 632 Mercury black, see Soot, mercurial Mercurial fahlore, see Fahlore Mercuric chloride, chemical reactions of, ii. 252 ; oxide, chemical reactions of, 251, 252; sulphide, chemical re- actions of, ii. 252-254 Meredith's works, California, chlorina- tion at, i. 815 Merget, on volatility of mercury, ii* 250 Metastannic acid, properties of, ii. 377 Mexican bell, 703*, 704 Miargvrite, localities of, i. 466 ; ii. 437 Michell, his proposed method for removal of tungsten from roasted tinstone, iL 391 Mielchen's nozzle, ii. 141, 142* Miest, see Bias Miller process of gold-parting, i. 847- 850 Millerite, see Nickel Pyrites Miilon, on volatility of mercury, ii. 250 Mimetesite, i. 283 ** Mineral," in treatment of Lake-copper, i. 196 Minet, on extraction of tin by electro- lysis, ii. 426 ; his electrolytical method of aluminium extraction, iL 654,655 Mispickei, ii. 475, 481 Missouri mine, the, at Pine flat, retort furnaces for mercury extraction used at, ii. 322 Missouri Zinc Co., the St. Louis, zinc- distillation furnaces at, ii. 129, 130 Mitscherlich, on specific gravity of arti- ficial cinnabar, ii. 253 ; on the re- fining of antimony, ii. 462 Mitter, on heap and stall-roasting of cinnabar, ii. 264 ; on Idrian furnaces, ii. 273 n ; on Czermak furnaces, ii. 309 n ; his condensers, used with the Novak -Czermak furnaces, ii. 321 ; on composition of residues at Idria, ii. 335 n ; on extraction of mercury at Idria, ii. 340, 341 " Mixed " ores, calcined in Oker kilns, i. 51* Moebius, his process, for parting gold and silver, i. 268; on parting of gold by electrol^'sis, i. 874 Moffet hearth, see Jumbo hearth Moissan, on aluminium carbide, ii. 631 Moldenhauer, on action of oxygen on gold, i. 830 MoUoy, on the MacArthur and Forrest gold extraction process, i. 828 7t, 838 GENERAL INDEX (15 on electro-metallurgical extraction of gold, i. 482 Molybdenum, effect on tin, ii. 375 Mond, his proposals for extraction of nickel, ii. 573 ^lonnier, on calcination of copper pyrites for the sulphate, i. 213-216 Montalvo, Luis Berriode, on the patio process, i. 625 Montana Co., Ltd., the, at Marysville, combination process of silver extrac- tion at, i. 674 Montefiore furnaces, melting of zinc fume out of, ii. 175,* 176 Moresonite, ii. 508 ^{organ's patent plumbago crucibles, i. 546 Morin, on extraction of tin by electro- lysis, ii. 426 Mortars of stamp mills, i. 778*, 779* ; eold amalgamation in, i. 789, 790 Moxnam, on composition of Bertha spelter, ii. 183 n ^loulds, for casting copper, i. 192; for casting refined lead, i. 454, 455* ^loulin and Dole, on treatment of tin- cuttings, 422, 423 ^Irazek, on extraction of bismuth from alloys, ii. 364, 365, 372 Miinster, on argentiferous copper matte, i. 118, 119 Muffle furnaces, for calcination of copper ores, i. 28, 83-86 ; calcination of copper matte in, i. 113, 116; for production of copper chloride, i. 233, 234*, 235; lead ores roasted in, i. 329 calcination of zinc blende in com- bined reverberatory and, ii. 59- 63 ; calcination of zinc blende in, ii. 63-74 ; with hand rabbling, ii. 63- 71 ; with machine rabbling, ii. 71- 74 ; utilisation of protlucts of calci- nation in, ii. 75-84 ; for zinc distilla- tion, ii. 94, 95*-101* ; compared with retorts, for zinc distillation, ii. 103- 105 ; zinc distillation in muffles, ii. 130-173 [nee under Zinc) ; for zinc distillation, construction of, ii. 130- 133 ; condensers for, ii. 133-143 ; furnaces, ii. 143 et fteq. ; loss of zinc by distillation in, ii. 170-172 ; cost of distillation in, ii. 173 treatment of cadmium in, ii. 245 ; for extraction of crude arsenious oxide, ii. 481, 486 ; for refining coarse nickel matte, ii. 533 ; for roasting arsenical ores, ii. 559 Muir, on treatment of tin-cuttings, ii. 422 Mulden w^orks, at Freiberg, furnace for calcining lead ores at, i. 334, 335*, 338 ; composition of slags from, i. 347 ; Pilz furnaces at, i. 352-355 ; smelting leatl ore at, i. 386-389 ; zinc desilverising process at , i. 532 ; Pattinson and zinc desilverising pro- cesses combined, i. 561 Muller and Lancauchez, proposal for im- provement in zinc extraction, ii. 185^/ Mullerus, on treatment of tin-cuttings, ii. 423» Munktell's process of gold chlorination, i. 815 Murray, on composition of slag from American lead smelting works, i. 346 Muspratt-Kerl, on extraction of cobalt oxide, ii. 601 Mylius, on oxidation of aluminium, ii. 628 Mylius and Fromm, on electrolysis of zinc, ii. 202, 204 Naef, on extraction of tin by electrolysis,, ii. 427 Nagyagite, i. 758 Nahnsen, on electrolysis of zinc. ii. 200,. 201, 204, 209 et neq. Napier, on comTX)sition of pimple metal, i. 148 ; of blue metal, i. 149 ; of mos:^ copper, i. 149 ; on volatility of gold, i. 752 Nas de Gilles mine at Baux, composition of aluminium from, ii, 633 National works, the Chicago, lead refin- ing at, i. 453 ; desilverising by zinc- method, i. 524, 533 ; liquation of zinc scums, i. 538 Necopyrites, ii. 508 Neeb, on tin-smelting in Banca, ii. 410 Needleore, ii. 352 Netto, his process of aluminium extrac- tion, ii. 642 Neville, on melting-point of silver, i.. 456// Newberv's process of gold chlorination„ i. 816 New Jersey Zinc and Iron Co., the, ex- traction of zinc white by, ii. 226,. 232 New Primrose Mine, Transvaal, Mac- Arthur-Forrest gold-extraction pro- cess at, i. 833 Newton, on alloys of bismuth, ii, 351 Nicholson Works, Brooklyn, Mac- Dougall furnace in use at, i. 67 ; converters used at, i. 166 Nickel, in copper ore at Miihlbach, i.. 124 ; in copper refining, i. 173, 174». 180, 195 ; action on copper, i. 4 ; action in electrolysis of copper slimes, i. 261, 262 \ in speiss from lead smelting, i. 389 physical properties, ii. 496 - 498 ; chemical properties, ii. 499 ; chemi- cal reactions of compounds, ii. 499-506 : uses for, ii. 506 ; alloys, ii. 506, 507 ; ores, and their locali- ties, ii. 507-510 Extraction ok, ix the dry way, ii» 716 GENERAL INDEX olO-573; from ores, ii. 511, 570 ; from sulphur compounds, ii. 511-554; conversion of the ore into coarse matte, ii. 515-529 ; roasting the ore, ii. 515-52^) ; smelting the roasted ore, ii. 520-529 ; refining coarse matte, ii. 530-544 ; conver- sion into fine matte, ii. 530-544 ; -concentration of poor matte, ii. 531- 537 ; refining concentrated matte, ii. 538-544 ; conversion of nickel -cop- per matte into copper-nickel alloys, ii. 544-548 ; production of nickel matte free from copper, ii. 549-551 ; production of crude nickel, ii. 551- 554 ; extraction of nickel from sili- cates, ii. 554-556 ; from arsenical ores, ii. 556-570 ; conversion of ore into coarse speiss, ii. 557-563 ; pro- duction of refined nickel speiss, ii. 563-568 ; pro<luction of raw nickel, ii. 568-570 ; extraction from metal- lurgical products, ii. 570-573 ; new proposals for extraction in dry way, ii. 573 Extraction' in wet way, ii. 574- 588 ; direct from ores, ii. 574- 579 ; from smelting products, ii. 580-588 ; extraction from matte, ii. 580-585 ; from speiss, ii. 585- 587 ; from slags, ii. 587, 588 Extraction by electrolysis, ii. 588- 592 refining of nickel, ii. 592, 596 ; separa- tion of, from cobalt, ii. 601, 602; efifect on aluminium, ii. 627, 631 Nickel Co., at Iserlohn, extraction of nickel from garnierite at, ii. 555 Nickel antimony glance, ii. 508 ; arsenic glance, ii. 508 ; white arsenical-, ii. 476 ; red arsenical-, ii. 476 ; bloom, dee Annabergite ; carbonyl, properties of, ii. 506 ; monosulphide, chemical properties, ii. 500-503 ; ochre, Hft Annabergite ; pyrites, ii. 500. 508 ; silicate, chemical properties of, ii. 505, 506 ; steel, amount of iron in, ii. 497, 498, 507 ; sulphate, chemical Properties of, ii. 505 ; vitriol, see loresonite ; white-ore, ttet Chloan- thite. Nickelic oxide, chemical pi*Aperties, ii. 500 Nickelous chloride, chemical properties, ii. 505 ; hydrate, chemical pro- perties, ii. 5<J0 ; oxide, chemical pro- perties and reactions, ii. 499, 500 Niederlander, on production of cadmium sulphide, ii. 242 Niederschlagsarbeit, see Iron-reduction process Nitre, action with zinc sulphide, ii. 1 1 Nitric acid, a solvent for copper, i. 7 ; action on cuprous oxide, i. 8 ; on sil- ver, i. 457 ; on silver sulphide, i. 460 ; on gold, i. 753 ; gold-parting by, i. 851-853 ; action on zinc, ii. 5 ; action on mercury, ii. 251, 252 ; on mercuric sulphide, ii. 253 ; on bis- muth, ii. 348 ; extraction of bismuth by means of, ii. 365, 372 ; action on tin, ii. 376 ; on antimony, ii. 431 ; on arsenic, ii. 472; on cobalt, ii. 497 ; on aluminium, ii. 628 ; on nickel, ii. 499 Nitric peroxide, collected in English py- rites burners, i. 48 Nollner, on tin-iron alloys, ii. 407 Northern Belle Mill, Nevada, Stetefeldt furnaces at, i. 687 North German Refinery, ihe, sepaiation of gold from platmum, i. 625 Nouvelle Montagne Works, the, at Prayon, double furnaces for zinc- distillation at, ii. 1 18*, 127; treatmenr of furnace products, ii. 174, 175 Novak, modification of the Czermak fur- nace for mercury extraction, ii. 305, 318*, 320*, 321 Nozzles, for zinc-distillation adapters, ii. 139-143 O Oehme, on the volatilising roasting of antimony, ii. 449 Ofenbruch, i. 320 O'Harra furnace for copper extraction, i. 72, 73* ; Brown- Allen in'.provement«, 73*, 74*, 75; used at Argo works, Colorado, i. 153 ; for lead ore roast- ing at Denver, Colorado, i. 338 ; for calcination of gold ores, i. 808 ; for burning calamine, ii. 29 ; for calcin- ing zinc blende, ii. 50 O'Harra- Brown furnace, the, usetl in leading silver matte, i. 488 ; in chloridising roasting silver ores, i. 683 Ohl, on refining of blicksilber, i. 596 Old Globe Inline, Arizona, process of smelting, i. 168 Ollivier and Perret, copper furnace, disposition of the ores, i. 52, 57, 58* Omaha and Grant Smelting Works, Den- ver, furnaces for roasting lead ores at, i. 334r-336, 337*, 338 ; recUngular smelting furnaces at, 354, 376, 377 ; lead slag at, i. 380 ; treatment of lead matte, i. 383, 384 ; lead smelt- ing at, i. 392, 393 ; lead refining at, i. 452, 453 ; desilverising by zinc method, i. 524 Onofrite, ii. 259 Ontario Mill, Utah, Stetefeldt fuma<% at, i. 687 Ores, see under the names of the various metals Ore-fines, copper, calcination in shaft- furnaces, i. 52 GENERAL INDEX 717 Ore Knob copper, analysis of, i. 118 Orford Copper Co., the, New Jersey furnaces for '^smelting calcined cop- per ore at, i. 104*, 105* ; process of smelting, i. 1 10; production of retined nickel matte by, ii. 550 ; production of crude nickel by, ii. 553 Orford furnaces, i. 92, 93, 104», 105* ; fore-hearths of, i. 94 ; process of smelting in, i. 110; for refining, i. 183 Orpiment. ii. 476 ; production of, ii. 493, 494 Oser, on composition of mercurial soot at Idria, ii. 330 Osmium, effect on gold, i. 753 ; localities of, ii. 610 Oudemans, on impurities in commercial zinc, ii. 3 ^ Oxford Nickel and Copper Company, i. 45 Oxidation of zinc scums by steam, i. 550- 552 Oxland, on cementation, i. 846 Oxiand furnace for copper extraction, i. 81, 127 [see Hocking); for roasting lead ores, i. 339 ; for burning cala- mine, ii. 30* ; for purification of roasted tin-stone, ii. 390, 391* Oxland's rotating cylinder furnace for extraction of arsenic, ii. 482, 483, 487 Oxland-Hocking furnace, the, for cal- cining tinstone, ii. 388, 389*, 390 Pack, on refining of zinc, ii. 182 Packfong, ftee China -silver Page, on composition of slag from American lead smelting works, i. 346 Paint, collecting lead-smelting products for manufacture of, i. 311, 318 Palladium, ii. 616 Palm's nozzle, ii. 141* Pan-amalgamation, i. 696-7CK) Pans, used by gold prospectors, i. 760* ; gold-amalgamation in, i. 795-797 Patio process, of silver extraction, i. 625- 647 ; crushing the ores, 627-631 ; amalgamation of ground ore in the patio, i. 631-642; separation of amalgam, i. 642-646 ; treatment of amalgam, i. 646, 647 Paradon mine at Baux, composition of aluminium from, ii. 633 Parkes's furnace for copper extraction, i. 78, 79*, 80 ; for burning calamine, ii. 29 Parkes's desilverising processes, i. 422, 425, 431 Pamell, on extraction of zinc by drj' and wet methods, ii. 196 Pamell and Simpson, Messrs., method of antimony extraction, ii. 468 Parrot Silver and Copper Company, the, at Butte, Montana, copper stall roasting by, i. 39, 40* ; Spencer fur- naces adopted by, i. 62, 63 ; fixed reverberatory copper calciners, i. 71 ; composition of slags in English pi-o- cess of copper smelting, i. 127. Stalmann converters used by, i. 164, 165 Parting of gold, i. 842-876. {See under Gold) Passaic Zinc Co., the, extraction of zinc white by, ii. 226 Patera process, i. 718-723 Patera, on Augustin process, i. 709 ; on formation of mercurial soot, ii. 262 ; his retort furnace, ii. 321*, 322* ; on composition of mercurial soot at Idria, ii. 330 ; on separation of nickel and cobalt, ii. 602 Pattinson's desilverising processes, i. 422, 425,431, 434; composition of Harz lead refined by, i. 442 ; compo- sition of Freiberg lead before and after treatment by, i. 444, 445 ; des- cription of, i. 503, ef seq. ; hand- pattinsonising, i. 505-51 1 ; mechani- cal pattinsonising, i. 511, 514 ; com- bined with the zinc desilverising process, i. 561 ; treatment of bismuth lead alloy by, ii. 352, 363, 372 Paul's amalgamators, i. 801 Paul works, near Roszdin, reverberatory furnaces for burning calamine at, ii. 27 ; mufiles for zinc distillation at, ii. 133 : Dagner's adapters at, ii. 136, et Meq, ; Siemens gas furnaces at, ii. 160, 169; charge for distillation, ii. 161 ; Belgo-Silesian furnaces at, ii. 167 ; zinc refining at, ii. 182 ; ex- traction of cadmium at, ii. 245 " Pauschen," or liquation oJF tin, ii. 414 Pavlov's works, Barnaul, production of work-lead from silver ores, i. 485 ; leading of silver mattes, i. 486 et seq. Pearce's turret furnace, for copper ex- traction, i. 72, 75*, 76 ; for burning calamine, ii. 29 ; for calcining zinc blende, ii. 50 Pelican reduction works, the, George- town, barrel amalgamation at, i. 692 Pellet furnace, for extraction of mercury, ii. 315 Pelouze, on oxidation of mercury, ii. 251 Pennsylvania Lead Co., couiposition of refined market lead from the, i. 455 Percy, experiments on action of silica with cupric oxide, i. 8 ; on reaction of cuprous sulphide and lead oxide, i. 10 ; on composition of sea-sand used as smelting bed at Swansea, i. 131 ; on solubility of copper in 718 GENERAL INDEX cuprous sulphide, i. 149 ; on tiie re- actions of lea<l sulphide, i. 278 ; on English process of lead extraction, i. 301 »,302 n, on Scotch hearth, i. 317 w; on reactions of silver sulphide, i. 460 ; on production of work-lead from silver ores, i. 481 n ; on the Tintin process, i. 61 4 H, 617?*; on patio process, i. 642 n ; on Patera process, i. 718 ; on gold -parting by sulphur, i. 846 H ; on cementation, i. 846 n ; on inouartation, i. 851, 853 n ; on gold- rehning, i. 854 ; on impurities in commercial zinc,ii. 4 ; on chemical reactions of zinc oxide, ii. 7 it, 8 n ; of zinc sulphide, ii. 9-11 ; of zinc silicate, ii. 11 ; on muffle furnaces for zinc distillation, ii. 98 Perret copper furnace, nee OUivier Person, on the melting point of zinc, ii. 2 ; on melting point of bismuth, ii. 347 ; on melting point of tin, ii. 375 Pertoch, on electrolysis of zinc, ii. 206 Peters, on normal heap roasting of copper ores, i. 30-34* ; on Spence furnaces, i. 63 H ; on fixed reverberatory copper calciners, i. 71 ; on Pearce's Turret Furnace at Argo, i. 75 ; on water jacket furnaces, i. 102 ; on consump- tion of wood in calcination of copper matte, i. 114 ; on composition of slags in English process of copper smelting, i. 127 ; on composition of quartz used as smelter-bed in Montana, i. 131 ; on pyritic copper smelt inff, i. 166 ; on treatment of oxidised ores in Arizona, i. 168 ; on Siemens copper-refining gas furnace, i. 185 Pettenkofer, on gold refining, i. 854, 862 Petit, on the specific heat of gold, i. 753 ; on boiling point of mercury, ii. 250 Pfleger, on electrolysis of zinc, ii. 206 Pfort, on extraction of zinc oxide by sul- phuric acid, i. 560 Philadelphia smelting works, Colo- rado, lead smelting process at, i. 412 ; smelting lead carbonate at, i. 414 Phillips, on production of chloride of copper in dry way, i. 220 ; on Brunton's tinstone calciner, ii. 386 n ; on extraction of lead from crude bismuth, ii. 372 Phoenix and.Haile Mines, N. Carolina, chlorination of gold at, i. 817, 818 Phosphorus, action on copper, i. 5 ; action with zinc, ii. 6 ; compounds of tin and, ii. 378 ; effect on nickel, ii. 498 ; as a purifier of nickel, ii. 595 Photography, cadmium used in, ii. 243 Pilz furnaces, for smelting calcined cop- per ores, i. 98, 99*, 100, 119, 123; used for the residues in the Tamowitz lead -extraction process, i. 306 ; for lead smelting, dimensions of various forms of, i. 352-355 ; at Freiberg, i. 362, 363*, 368, 378 ; for smelting of lead matte, i. 384 ; U8e<l at Alexisbad, i. 410 ; for smelting Freiberg slags, i. 420 ; for smelting litharge, i. 425 ; for smelting abstrich, i. 428, 429 ; for refining lead, i. 443-445*, 450 ; for roasting lead ores, at Schemnitz, i. 477 Pimelite, ii. 509 Pimple metal, composition of, i. 148 [s*.f^ white metal) Pittsburg, Redaction Co., the, extraction of aluminium by, ii. 653 Plagionite, ii. 437 Planilla, in patio process, i. 644, 645 Plate-pewter, ii. 436 Platinum, action in electrolysis of cop- per slimes, i. 262 ; effect on gold, i. 753 ; reduction of in gold -refining, i. 854, 857 ; physical properties, ii. 614 ; chemical reactions of com- pounds, ii. 615 ; ores, ii. 616, 617 ; extraction in dry way, ii. 618-620 ; in wet ways, ii. 621-625 ; by elec- trolysis, ii. 625 Platillo, in patio process, i. 635 Plattner, on the roasting and carbon-re- duction process, i. 319, 320; on treatment of lead scums, i. 426 ; on zinc desilverising process, i. 532 ; on hand-pattinsonising, i. 560 ; his furnace for cupellation of argenti- ferous lead at Freiberg, i. 575, 576* ; on Ziervogel process, i. 742 ; his gold extraction process, i. 804-806; on cementation, i. 846 ; his furnaces, for extraction of bismuth, ii. 355* ; on composition of hardhead at Alt en- berg, ii, 408 Plattner- Rich ter, on effect of nickel on copper, i. 4n; on ferriferous copper mattes, i. 118 ; on liquation furnaces for antimony reduction, ii. 442 n Plumbiferous metallurgical products, i. 283 ; smeltinff of, i. 418-422 Plymouth Mine, California, chlorination of gold at, i. 812 * Poison -tower' condenser for arsenious acid, ii. 485*, 486 Poling, in copper refining, i. 189-192 Poll, introduction of Bustamente furnace into Idria, ii. 268 Pollock's process of gold chlorination, i, 816 Polvillo, in patio ]process, i. 645 Polybasite, localities of, 1. 467, ii. 437 Pontifex and Wood, Messrs., London, antimony redaction by, ii. 457 Pots, for lead refining, i. 436*-441 GENERAL INDEX ri9 Pot furnaces, reduction of antimony in, ii. 456 ; refining antimony in, ii. 462 ; potash lye, action on zinc, ii. 5 Potassium, alloy of aluminium and, ii. 631 Potassium stibnyl tartrate, ii. 435 Precipitation of copper, i. 205, 208 ; of copper sulphate, i. 208 ; by sulphur- etted hydrogen, i. 209 ; of copper from solutions, i. 240-246 ; from cupric sulphate, i. 240, 241 ; from copper chloride, i. 241-243, 244- 246; production of silver by, i. 707 ; of silver from sodium thiosul- phate, i. 730-732 ; of gold from chloride solution, i. 819-826 ; in the MacArthur-Forrest process, i. 834- 839 Press-periode, see Slag reduction Price-Fenwick, on extraction of tin by electrolysis, ii. 426 Prill, particles of matte, i. 88 Probert, furnace designed by, for lead smelting, i. 353 Proustite, localities of, i. 467, ii. 437 Providence Mine, Nevada City, stamp mills at the, i. 786 ; chloiination of gold at, i. 812, 815; precipitation plant at, i. 824*, 825» Providence Works, California, calcina- tion of gold ore at, i. 809 Pnsibram furnaces, i. 368, 369*, 370* for refining lead, i. 443*, 444* ; older forms of, i. 4i6, 447*, 450 Puddling tub for gold-washing, used in Australia, i. 762 Pueblo Smelting and Refining Co., Colorado, leading of silver mattes in works of, i. 488 Pufahl, on composition of nickel smelted at Altona, ii. 594 " Purple ore," i. 240 Purpureo-cobaltous chloride, ii. 598 Pyrargyrite, localities of, i. 466 Pyrites burners, for calcination of copper ores, i. 45-49 ; used at Oker, i. ^*, 47*, 49 ; English, after Lunge, i. 47, 48*, 49* ; for roasting lead ores, i. 328 ; reduction of, in calcination of zinc blende, ii. 35 ; for calcining zinc blende, ii. 40, 41 Pyromorphite, composition and localities of, i. 283 Pyrostilbite, ii. 437 Q Quartz, reduction of, in smeltins cal- cined copper ores, i. 88 ; Ejiglish process best for smelting quartzose ores, i. 89; used as smelter-bed in Montana, i. 131 ; reduction of, in smelting lead ores, i. 344 ; reduction of, in calcination of zinc blende, ii. 36 ; in zinc distillation, ii. 87 ; mixed with clay for distillation - vessels, ii. 92 Queen's metal, ii. 436, 506 Quesneville, on purification of bismuth from arsenic, ii. 370 ** Quickmills," i. 790 {see Hungarian mills) Quicksilver, see Mercury R Rabble -furnaces, for antimony extraction, ii. 447 Rabbling, in lead extraction, i. 292, 303 Raffinad, or refined copper, i. 171 Rammelsberg, on cuprous oxide in copper, i. 2 ; on silver extraction process at Oker and Altenau, i. 604 ; on Krohnke process, i. 621 ; on patio process, i. 637 ; on specific gravity of zinc, ii. 1 ; of tin, ii. 375 ; of cobalt, ii. 597 Ramsay, on the Jumbo furnace, i. 315 n ; on Bartlett process, ii. 236 n Randall, on output of Californian cinna- bar deposits, ii. 258 Rando k Co., method of extraction of arsenical products from residues of coal-tar colours, ii. 495 Randolph, electrolytical method of copper extraction, i. 269, 271, 272 Rapid City, Dakota, extraction of gold by bromine, i. 827 Raschette furnaces, i. 92, 104* ; at Altenau, i. 352-355, 370, 375*, 390 ; used at Clausthal and Lautentlial, i. 398, 399, 400*, 401* ; for smelting silver ores, at Altenau, i. 479 Rath, on composition of slag from American lead smelting works, i. 346 Rattlesnake Mine, the, California, native mercury in, ii. 255 Rauschgelb, see Orpiment Rauschroth, see Realgar Ravenswood Works, Queensland, Mac- Arthur-Forrest gold extraction pro- cess at, i. 840 Raymond, on extraction of tin by electrolysis, ii. 427 Realgar, ii. 476 ; production of, ii. 491- 493 ; production of " rohglas," ii. 492 ; refining of " rohglas," ii. 493 R^umur, on crystallisation of gold, i. 752 Recha's nozzle, ii. 140* Rectangular furnaces, i. 352-355 {see American furnaces) Red-shortness in copper, causes of, i. 2-6 Red slag metal, i. 150 Reef gold, i. 756 720 GENERAL INDEX Reese River process of silver extraction, i. 69() tt seq. Refractory materials, i. 23 Regnault, on specific heat of silver, i. 456 ; of gold, i. 753 ; of zinc, ii. 2 ; on specific gravity of n.ercury, ii. 250 ; on boiling point of mercury, ii. 250 ; on chemical reactions of mercuric sulphide, ii. 253 ; on speci- fic heat of bismuth, ii. 347 ; of tin, ii. 375 ; of antimony, ii. 431 ; of cobalt, ii. 597 "Reicher Erzgries," ii. 336 Reineck'en-Ponsgen and Kopp, on treat- ment of tin cuttings, ii. 423 Retorts, for treatment of gold amalgam, i. 802, 803* ; for zinc distillation, fire-proof clay for, ii. 91-93, 98 ; compared with muffles, for zinc dis- tillation, ii. 103-105 ; manufacture of, ii. 105-110; losses in treating zinc in, ii. 170-173 ; cost of distilla- tion in, ii. 171 Retort furnaces, extraction of mercury in, ii. 321-322; for production of ** rohglas," ii. 492 Reverberatory furnaces, i. 19-24 ; for calcination of copper ores, i. 28, 67- 83 ; various kinds, i. 67, 68 ; fixed hearths worked b^ hand, i. 68, 69*- 71*, 72 ; observations on, by Peters, Talbot, and Ames, i. 71 ; fixed hearths worked by machinery, i. 72-80 ; movable hearths, i. 80-83 ; for smelting of quartzose ores, i. 89 ; calcination of copper matte in, i. 113, 116; smelting calcined copper ore for coarse metal in, i. 129-139 ; English, i. 128, 132, 138 ; Welsh, i. 128, 132*, 133*, 138; American, 133, 134*-137* ; smelting white metal for coarse copper, i. 143-146 ; re- fining coarse copper in, i. 175-180 ; for calcination of copper pyrites to sulphate, i. 213-215; employed in formation of chloride of copper by Dotsch process, i. 218 ; by dry method, i. 223*, 224* air reduction of lead ores in, i. 288- 290 ; for preparatory roasting of lead ores, i. 323, 329-339 ; with movable hearths, i. 338, 339 ; refining of lead in, i. 443-453 for burning calamine, ii. 25-32 ; fixed reverberatory furnaces, worked by hand, ii. 25-28* ; fired by gas, 29* ; worked mechanically, ii. 29 ; with movable hearths, ii. 29 ; with mov- able chambers, ii. 30 ; heated by waste heat from reduction process, ii. 31, 32 ; calcination of zinc blende in, ii. 41-52 ; in fixed reverberatory furnaces, ii. 42, 43 ; in independent furnaces worked by hand, ii. 43-48 ; heated bv waste heat of reduction process, ii. 48 ; calcination in fixed reverberatory furnaces worked bj' machinery, iL 48-50 ; calcination in furnaces witli movable hearths, ii. 50, 51 ; with movable chambers, ii. 51, 52 ; neutralisation of sulphur acids evolved by calcination in, ii. 52-59 ; calcination in combined muffle and, ii. 59-63 ; proposals for improvements in, ii. 191-193 fpr extraction of mercurj', ii. 309-314 ; Alberti furnace, ii. 310, 311 ; iron clad furnaces, ii. 311-314 ; for calci- nation of tin -stone, ii. 384-390 ; for smelting tin-stone, ii, 394-40U ; for liquation of antimony glance, ii. 443, 451 ; for refining antimony, ii. 463 ; for refining coarse nickel matte, ii. 531 ; smelting roasted matte in, ii. 536, 537 : oxidation of ooarse matte in, ii. 537 ; refining matte in, ii. 541, 542; for roasting arsenical ores, ii. 559, 564*, 566 Rewdanskite, ii. 509 Rhenania Company, the, of Stolberg, muffle furnaces used by, i. 84 ; neu- tralisation of sulphur acids from calcination of zinc blende, ii. 54 ; Hasenclever furnaces at, ii. 69, 70, 73 ; manufacture of sulphuric anhy- dride at, ii. 75 Rhodium, ii. 616 Rhodonite, zinc-white produced frcnn, i. 226 Richanls, on refining zinc, ii. 181 Richardson, his method of nickel extrac- tion, ii. 575 Richter, on hand-pattinsonising, i. 508 Richter and Hiibner, on the Krohnke process, i. 623 Ricketts, his method of nickel extrac- tion, ii. 575 Riemsdijck, on melting point of silver, i. 456 ; on melting point of ^old, i. 752 ; on melting point of bismuth, ii. 347 Rinmann's green, ii. 600 (aee Zinc green) Rivot, on smelting of litharge, i. 424 Roasting and reduction process for ex- traction of lead, i. 31&-394 ; effect of foreign substances, i. 320-321 roasting ores, i. 322-339 ; preparatory roasting, i. 323-324 ; heap roasting, i. 324-326*, 328 ; roasting in shsSt furnaces, i. 328, 329 ; in reverber- atory furnaces, i. 329-339 ; smelting roasted ores in shaft furnaces, L 339-377 ; process of smelting, i. 377- 382 ; treatment of lead matte, i. 383-385 ; smelting at Langelsheim and Goslar, i. 385, 386 ; at Freiberg,, i. 386-389 ; at Mechen.ich, i. 390 ; at Altenau, i. 390, 391 ; at Przibram, i. 391, 392 ; at Denver, i. 392, 393 ; GENERAL INDEX 721 in Spain, i. 394 ; combined with iron reduction process, i. 409-412 Roberts, on specific gravity of bisiunth, ii. 347 Roberts-Austen, introduction of Miller's gold -parting process into the London mint by, i. 847 ; on alloys of gold and aluminium, ii. 633 Robinson mill, Transvaal, gold stamp mills at the, i. 798 ; MacArthur- Forrest gold extraction process at, i. 833, 836 Roohaz, proposal for improvements in zinc extraction, ii. 185 Rodwell, on impurities in commercial zinc, ii. 4 Rosing, on composition of refined Harz lead, i. 442 ; on liquation of zinc scums at Altenau and Lautenthal, i, 537 ; on distillation of zinc scums, i. 548 ; on oxidation of zinc scums, i. 