INDEX TO ILLUSTRATIONS. PAGE page Alum Ma k in g .......................................... 571 F urnaces. Amalgamation Mi l l ............................. 299 Lead smelting (see also Furnaces, Am pu lla..................................................... 442; 446 blast).............................................. 393 Argonauts .............................................. 330 Liquation............ 517; 519; 525; 527; 528 Assay B alances (see Balances). Nitric acid making............................ 442 Assay Crucible .................................... 229 Nitric acid parting............................. 446 Assay F urnaces. Parting precious metals with anti­ Crucible ................................................ 227 mony .............................................. 453 Muffle .................................................... 223; 224 Ditto cementation.............................. 455 Quicksilver distillation ..................... 427— 432 Balan c es................................................... 265 Refining silver ........................ 485 ; 486 ; 489 Baling W ater ....................................... 199 Roasting ............................................... 276 Bars, for F urnace W ork ............ 377; 389 Steel making........................................ 425 Batea ......................................................... 157 Tin burning........................................... 349 Bellows. Tin smelting ........................................ 415 For blast furnaces 359 ; 365 ; 368 ; 370 ; 372 For mine ventilation............ 208 ; 209 ; 211 Gad ............................................................. 150 For tin furnace .................................. 419 Glass Making ........................................ 591 Bismuth Smelting....... 434 ; 435 ; 436 ; 437 Furnaces.................................. 587 ; 588 ; 589 Bitumen Making ................................... 582 Ground Sluicing 337 ; 340 ; 343 ; 346 ; 347 Bitumen Spring .................................... 583 Bowls for A lluvial W ashing (see H ammers.................................................... 151 also Batea) .................................. 336 With water-power.............................. 422 ; 425 Buckets. H eap R oasting ..................................... 275; 278 For hoisting ore ......................................... 154 H earths. For hoisting water .................................... 158 For bismuth smelting ..................... 43 6 ; 437 Buddle .................................301; 302; 314; 315 For heating copper cakes ............... 504 Building Plan for R efinery ........ 493 For melting lead .............................. 393 Building Plan for Smelter............ 361 For melting lead cakes.................... 499 For refining tin .................................. 418 Chain Pu m p s .............................. 173; 174; 175 For roasting......................................... 277 Chrysocolla Making ...................................... 585 H em icycle................................................ 138 Circular Fire (see Ring-Fire). H oe ............................................................. 152 Clay W ashing ....................................... 37 4 ; 375 Compass.................................. 5 7 ; 5 9 ; 1 4 2 ; 147 Interveniutn .............................................. 50 Copper Mould for A ssa y in g .......... 250 Iron Fork for Metal......................... 387 Copper R efining .................................. 5 3 4 ; 537 Iron H ook for A ssaying ................ 240 Copper R efining Fu r n a c e ....................... 532 I ron Smelting ....................................... 422; 424 Crane. Iron T ools................................................ 150 For cupellation furnace................... 479 For liquation cakes ................................... 514 Jigging Si e v e ......................................... 311 Crowbars ........................................................ 152 Cupel ................................................................. 229 L a d d e r s .................................................... 213 Mould ............................................................ 231 L adle for Metal ................................. 383 Cupellation F urnace............ 468; 470; 474 L ead Mould for A ssaying ............ 240 At Freiberg .................................................. 481 Liquation Cakes. In Poland...................................................... 482 Dried.............................................. 530 Cutting Me t a l ............................................... 269 Liquation Cakes, E xhausted ........ 522 Liquation Furnaces ......................... D escent into Min e s ................................... 213 ..................... 517; 519; 525; 527; 528 Dipping-pots 385; 387; 389; 393; 415; 417 Lye Making ........................................... 557 Distillation (see Nitric Acid and Quicksilver). Matte R oasting ................................... 350; 351 Divining R o d .......................................... 40 Meers, Shape o f ............ 7 9 ; 8 0 ; 86 ; 87 ; 89 D ogs Packing Ore ...................................... 168 Mills for Grinding Ore .................. 294 ; 296 D rifts ............................................................... 105 Muffle Furnaces.................................. 223 ; 489 D rying F urnace for Liquation ... Mu f f l e s .................................................... 228 ........................................... 525; 527; 528 D ust Chambers....................................... 3 9 5 ; 417 Nitric A cid Ma k in g ............................ 442 Nitrum Pits ............................................. 559 Fans, V entilation....... 204; 205; 206; 207 Fire-B u ck ets.................................................. 377 Fire Pump ........................................................ 377 Operculum ............................................... 446 Fire-Se t t in g ................................................... 120 Orbis ........................................................... 142a Forehearth ........................................... 357; 358; 383; 385; 387; 390; 417 Parting Precious Metals. F rames (or Sluices) for W ashing With antimony .................................. 453 Ore or A l l u v ia l ..................... By cementation ................................. 455 .......... 322— 324; 326— 329; 331— 333 With nitric acid ................................. 446 F u r n a c e s . With sulphur ...................................... 449 A s s a y in g (see Assay Furnaces). Picks 152 Blast...... 357; 358; 373 ; 377; 383 ; 385; Plummet Level. ....... 387; 390; 395; 419; 424; 508 Standing ................................................ 143 Copper refining ............................. 537 Suspended ........................................... 146 Cupellation...... 468; 470; 474; 481 ; 482 Pumps. Distilling sulphur ......................... 277 Chain ....................................... 173; 174; 175 Enriching copper bottoms ........... 510 Duplex suction ..................... 18 0 ; 185; 189 Glass-making............ 587; 588; 589 ; 591 Rag and chain............ 191; 193; 194; 195 Iron smelting ................................ 4 2 2 ; 424 Suction... 177; 178; 179; 182; 188; 137 639 640 V.WdM TO ILLUSTRATIONS. • • ■ 9 m . • • * • “ ^ GE page QuicksilVejc ;IfcsteiLLATloV. ; * • Surveying. .............* 427 {..4 2 9 ;I 430; *431 ; 432 Shafts and Tunnels 131 Triangles.......................................... 133; 134; 135; Rag and Chain Pumps....................... ................................. 136; 137; 139 ; 140 .................... 191; 193; 194; 195; 197 Suction Pumps (see Pumps). Rammers for Fire-clay ................... 377; 383 Sulphur Making ........................... 579 . 581 Ring-Fire, for Parting with Sulphur ............................................. 449 T a p -h oles in F u rn aces ................ 389 Roasting (see also Heap and Stall T a ppin g -ba r ...................................... 383; 385 Roasting) .................................... “ T ests ” for R e f in in g S il v e r 384; 485 ........... 278; 350; 351 ; 274; 275; 276 T im b e r in g . Rosette Copper Mak in g ................... 537 Shafts ....................................... 123 Tunnels...................................... 125 Salt. T in . Boiling .................................... 549; 554; 555 B ars............ .............................. Caldron ................................................. 551 ; 553 415 Burning ................................... 349 Evaporated on faggots.................... 556 Refining ................................... 418 Pans ..................................................... 547 Smelting ................................... W ells..................................................... 549 415; 419 T ouch-n e e d l e s ................................. 255 Saltpetre Making ............................. 553 T r a y s for W ash in g A l l u v ia l ... 334 Saxon Lead Furnace ....................... 393 T r e a d W him ....................................... 163 Scorifier................................................. 229 T rough ................................................ 159 Seams in the R ocks... 54; 55; 56; 60; 72 For washing alluvial................. 335; hafts 348 S . T r u ck s .................................................... Inclined ............................................... -J04 156