638 



INDEX TO ILLUSTRATIONS. 



Lye Making 



PAGE 



557 



Matte Roasting 350; 351 



Meers, Shape OF 79; 80; 86; 87 ; 89 



Mills FOR Grinding Ore 294; 296 



Muffle Furnaces 223; 489 



Muffles 228 



Nitric Acid Making . 

 Nitrum Pits 



Opercuhtm 

 Orbis 



442 

 559 



446 

 142a 



Parting Precious Metals. 



With antimony 453 



By cementation 455 



With nitric acid 446 



With sulphur 449 



Picks 152 



Plummet Level. 



Standing 143 



Suspended 146 



Pumps. 



Chain 173; 174; 175 



Duplex suction 180; 185; 189 



Rag and chain 191; 193; 194; 195 



Suction... 177; 178; 179; 182; 188; 137 



Quicksilver Distillation. 



427; 429; 430; 431; 432 



Rag and Chain Pumps 



191; 193; 194; 195; 197 



Rammers for Fire-clay 377; 383 



Ring-Fire, for Partjng with 



Sulphur 449 



Roasting [see also Heap and Stall 



Roasting) 



278; 350; 351; 274; 275; 276 



Rosette Copper Making 537 



Salt. 



Boiling 549; 554; 555 



Caldron 551; 553 



Evaporated on faggots 556 



Pans 547 



Wells 549 



Saltpetre Making 563 



Saxon Lead Furnace 393 



Scorifier 229 



Seams in the Rocks... 54; 55; 56; 60; 72 

 Shafts. 



Inclined 104 



Timbering 123 



Verticil 103; 105 



Shears for Cutting Metal 269 



Shield for Muffle Furnace 241 



Sifting Ore 287; 288; 289; 291; 



292; 293; 311 ; 342 



Silver. 



Cakes, Cleansing of 476; 488 



Refining 484; 485; 486; 489 



Sleigh FOR Ore 168 



Sluicing Tin 337; 338; 340; 343 



Smelter, Plan of Building 361 



Soda Making 561 



Sorting Ore 268; 270 



Spalling Ore 270; 271; 272 



Stall Roasting. 



Matte 350; 351 



Ore 274; 276 



Stamp-mill 284; 286; 287; 299; 



313; 320; 321 ; 373 



For breaking copper cakes 501 



PAGE 



Stamps 285 



Steel Furnace 425 



Strake 302; 303; 305; 306; 



307; 341; 342; 345 



Canvas 308; 309; 317; 321; 329 



Streaming FOR Tin 318 



Stringers. 



Associated 71 



Fihra dilatata 71 



Fibra incumbens 71 



Oblique 71 



Transverse 71 



Surveying. 



Rods 138a 



rinafts and Tunnels 131 



Triangles 133; 134; 125; 



136; 137; 13S;140 



Suction Pumps {see Pumps). 



Sulphur Making 579; 581 



Tap-holes in Furnaces 389 



Tapping-bar 383; 385 



" Tests " FOR Refining Silver ... 384; 485 

 Timbering. 



Shafts 123 



Tunnels 125 



Tin. 



Bars 415 



Burning 349 



Refining 418 



Smelting 415; 419 



Touch-needles 255 



Trays for Washing Alluvial 334 



Tread Whim 163 



Trough 159 



For washing alluvial 335; 348 



Trucks 156 



Tunnels 103; 104; 105; 120 



Timbering 125 



Veins. 



Barren 73 



Beginning of 69 



Cavernous 73 



Curved 61 



End of 69 



Head of 69 



Horizontal 61 



Intersections of 64; 65; 66; 67; 68 



Solid 73 



Strike of 62; 63 



Vena cunndata 49; 70 



Vena dilatata 45 ; 50 ; 54 ; 60 ; 61 ; 68 ; 69 



Vena profunda 



... 45; 50; 53; 61; 82; 63; 64; 68 



Ventilating with Damp Cloth (see 

 also Bellows. Fans, and Wind- 

 sails) 212 



Vitriol Making 567 ; 574 ; 575 ; 576 ; 577 



Wagons, for Hauling Ore 170 



Washing Ore (see Sifting Ore). 



Water Tanks, under Furnaces ... 358 



Wedges 150 



Weights, for Assay Balances 262 



Westphalian Lead Smelting 393 



Wheelbarrows 155 



Whims. 



Horse 165; 167 



Tread 163 



Windlasses 161; 162; 171 



Winds, Direction of 59 



WiNnsAiLs FOR Ventil.^tion 201; 202; 203 



