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[blocks in formation]

effects of impurities, 67, 71, 72

for calico printing rollers, 368, 370

heat by combination, 72

meaning of, 80
melting point of, 66
metals most used, 68
mixtures, 43
nature of, 39, 66-74
preparation of, 64
remelting of, 66, 67
specific gravity of, 41
testing of, 68
uniformity of, 67

Alumina, 52, 58

Aluminates, 58

Aluminium, 7, 36,

brass, 220-222

bronze, 212, 220-222

[blocks in formation]

Amalgam, for tinning, 282
for zinc, 281
gold, 284
lead, 281

magnesium, 287
native, 286

potassium, 288
silver, 286

sodium, 288

Amalgamated copper plates, 283
Amalgams, 2, 24, 280

for silvering glass globes, 371
American chemical society, 309
American nickel silver, 237
Ammonium, 38

chloride, 54

Amperes, 220

Anatomical preparations, alloy for, 273

Anderson, 78, 113

Annealing, 141

Antifriction, 230

Antimony, 1, 7, 27, 225

oxide, 27
sulphide, 27
-tin alloys, 260
Aqua regia, 308
Arbor Dianæ, 286
Argent-Ruolz, 330
Argentan, 235, 247
Argiroide, 235
Argol, 55, 155

Arguerite, 286
Arguzoid, 247

Arsenic 1, 4, 7, 28, 277
Arsenious acid, 28, 319

Ashberry metal, 263

Assay offices, 341

Atomic proportion, 211
volume, 71

weight, 9-11
Aurichalcum, 2

Australian coinage, 293

[blocks in formation]

Baudoin's alloy, 338

Bauxite, 58, 219

Bean-shot copper, 126

Bearings, 189, 192, 229

[blocks in formation]

commercial, 81

containing iron, 112

crystallisation of, 85

definition of, 80

direct method, 81
ductility of, 103
fracture of, 84, 88
furnace, 128
impurities in, 84
loss in melting, 83

malleability of, 88, 103

manufacture of, 124, 127

melting-point of, 83

properties of, 81, 100

sheet, 103

solders, 120

strips, 142

tensile strength of, 86, 88

varieties of, 87
white, 119

wire, 103-105

Brassfounders' pots, 143

Braziers' solder, 85, 120

Brazing, 223

Bright gold, 294
Britannia metal, 261
British silver coin, 327
Brittle gold, 309
Bronze, 2, 156, 162, 166
aluminium, 212
ancient, 157
and iron, 159
lead, 159

phosphorus, 159
zinc, 158
casting of, 232
Chinese, 224

colour of, 165
composition of, 157

for bearings, etc., 190
Japanese, 224-228

manganese, 201

modern, 158

phosphor, 180, 192
properties of, 158, 164
silicon, 199

Brown gold, 291
Brustlein, 360

Burin, 212

Burnt iron, 29

sand, 146
Button metal, 253

CADMIA, 1
Cadmium, 7, 36

alloys, 271

[blocks in formation]

Coloured gold, 294, 300

solders, 311, 312

Colouring gold, 312
Columnar, 6

Combustion, 13

Common salt, 54, 66, 317

Composition, 296

Conchoidal, 6

Condensation of fume, 136
Conductivity, 200
Cooke, 320

Cooper's gold, 348

mirror metal, 348

pen metal, 348

Cope, 187
Copper, 1, 7, 22
alloys, 70, 75
amalgam, 283
and antimony, 23, 79
arsenic, 23, 78
bismuth, 79
cobalt, 79

iron, 79

lead, 23, 79

nickel, 79

phosphorus, 23, 78
silicon, 23, 78

best selected, 105

blast furnace bears, 359
casting of, 75

group, 7

-nickel alloys, 246
properties of, 22, 76

-tin alloys, 2, 156, 163, 166
varieties of, 23

-zinc alloys, 81, 83, 120
properties of, 88, 98
table of, 87, 101, 102
Thurston's table, 90

Core, 151, 185, 216
bearing, 151
sand, 146
stocks, 151

stove, 144

Corinthian copper, 2

Corrosive sublimate, 320

Corundum, 219

Cowles's aluminium bronze, 215-217

Electric Smelting Co., 366

Cream of tartar, 55

Crucible furnace, 127

Crucibles, 59

brasquing of, 61

composition of, 60

testing of, 60

Cryolite, 37

Crystalline, 6, 245, 251

Cupro-ferro-manganese, 204

Cupro-manganese, 202

[blocks in formation]

Darcet, 268

Debray, 212, 349

Delta-metal, 114, 118

Dentists' alloy, 273, 372
amalgam, 282

Deoxidising, 185, 201, 205

Dépierre, 368
Deville, 212, 349
Dick, 114

Dinas brick, 62, 63
clay, 58

Dinner bells, 184
Dipping, 154

crucible, 310

Distance piece, 219
Dolomite, 36, 59, 63
Drop tests, 196
Dross, 65, 305

Dry colouring, 312-314
Duhamel, 4
Dunnachie, 62

Dutch metal, 82, 142
Dynamo, 218

[blocks in formation]
[blocks in formation]
[blocks in formation]
[blocks in formation]

IMITATION Silver alloys, 338
Impure gold, 309
Ingates, 150
Ingot casting, 143
moulds, 305

Iridescent, 251
Iron, 1, 7, 28

and aluminium, 365

arsenic, 31

carbon, 32

chromium, 359
cobalt, 358

copper, 363

manganese, 352

molybdenum, 359

nickel, 355

phosphorus, 31

silicon, 31
steel alloys, 352

Steel Institute, 355
sulphur, 30

tin, 364

titanium, 361

tungsten, 362

zinc, 365

[blocks in formation]
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