Part 16 — INDEX.

A.

PAGE

Advantages of the art of procuring light by means of coal gas 1

Air box of lime machine 153

Ammoniacal liquor, quantity obtainable from a given quantity of coal 303

Ammoniacal liquor, quantity of sulphuric acid, required for saturating a given quantity 303

Ammoniacal liquor, conversion of, into carbonate of ammonia 303

Ammoniacal liquor, conversion of, into muriate of ammonia 303

Apparatus for obtaining carburetted hydrogen gas from coal tar 285

Apparatus for purifying coal gas 141

Apparatus for certifying the proper mode of working the lime machine 157

Argand gas lamp 253

Argand gas lamp, quantity of gas consumed by different kinds 275

Art of procuring coal gas, theory of 33

B.

Bat’s wing gas burner 255

Bends, for connecting gas pipes 267

Burner, argand 253

Burner, bat’s wing 255

Burner, cockspur 255

Branch pipes 239

Branch pipes, dip of 243

Branch pipes, mode of connecting 263

Branch pipes, mode of proving 265

Branch pipes, corrosion of 260

C.

Carbonate of ammonia, preparation of, from ammoniacal liquor of coal 303

Cement, for connecting gas mains 241

Chandelier, sliding, for burning gas 257

Chester gas holder, description of 175

Coal, analysis of, by destructive distillation 35

Coal, chemical constitution of 42

Coal, classification of 41

Coal, comparative facility with which different species are decomposed 106

Coal, chiefly composed of bitumen only, varieties of 42

Coal, chiefly composed of bitumen, maximum quantity of gas obtainable from them 43

Coal, containing more carbon than bitumen 45

Coal, containing more carbon than bitumen, maximum quantity of gas obtainable from them 48

Coal, destitute of bitumen 42

Coal, maximum quantity of gas obtainable from them 44

Coal, Gloucestershire 49

Coal, Kilkenny 44

Coal, Lancashire 44

Coal, Newcastle 47

Coal, Scotch 109

Coal, Warwickshire 109

Coal, Welch Stone 48

Coal, Yorkshire 44

Coal oil 300

Coal oil, quantity obtainable from a given quantity of coal tar 302

Coal tar 298

Coal tar, quantity obtainable from a given quantity of coal 122

Coke, quantity obtained in the gas light process from a given quantity of coal, by means of cylindrical retorts 132

Coke, quantity obtained by means of horizontal rotary retorts 132

F.

Flue plan of setting cast iron retorts 59

Flue plan, report on a series of operations, made with retorts worked on the flue plan 61

Fuel, minimum quantity required for the complete decomposition of coal, by means of cylindrical retorts 61

G.

Gas, average cost of manufacturing it upon a large scale, in London 106

Gas, apparatus for lighting a town, best situation of, as far as it regards the most economical distribution of the pipes 249

Gas, apparatus for lighting a town, arrangement of 319

Gas, apparatus for lighting a town, at the Royal Mint 112

Gas, burners, different kinds of 253

Gas, quantity of, evolved during different periods of the distillatory process employed for decomposing coal, in cylindrical retorts 77

Gas, observations on the progressive evolution of, during different periods of the distillatory process with cylindrical retorts 79

Gas flame, mode of regulating the magnitude of 234

Gas holder, construction of, originally employed 164

Gas holder, sheet iron, best adapted for it 180

Gas holder, sheet iron, best adapted for it, cost of 164

Gas holder, sheet iron, lately adopted without specific gravity apparatus 169

Gas holder, at Birmingham without specific gravity apparatus 177

Gas holder, at Bristol without specific gravity apparatus 175

Gas holder, at Chester without specific gravity apparatus 175

Gas holder, collapsing 185

Gas holder, collapsing, rule for finding its capacity 195

Gas holder, revolving at the Westminster gas works 181

Gas holder, collapsing, rule for calculating its capacity 185

Gas holder, valve 221

Gas from coal tar 286

Gas from coal tar, average quantity obtainable from a given quantity of tar 286

Gas from oil 289

Gas from oil, quantity obtainable from a given quantity of oil 297

Gas from vegetable tar 284

Gas from vegetable tar, average quantity obtainable from a given quantity of tar 284

Gas illuminating power of 271

Gas lamps 253

Gas lamps, diameter of the pipes for supplying them with gas 261

Gas mains 239

Gas mains, mode of proving them when laid 245

Gas mains, observations on 247

Gas mains, cost of a mile, laid under ground in London 252

Gas mains, of pewter, lead, and tin, why unfit for distributing gas 260

Gas mains, weight of different lengths, of a given bore 251

Gas metre, construction of 214

Gas metre, construction of, at the Royal Mint Gas Works 214

Gas metre, directions to workmen for fixing it 229

Gas metre, rule for calculating its power 220

Gas metre, at the Birmingham Gas Works, registering capacity of 220

Gas metre, at the Bristol Gas Works, registering capacity of 220

Gas metre, at the Chester Gas Works, registering capacity of 220

Gas pipes, directions to workmen for adapting them to the interior of houses 258

Gasometer house, of sheet iron, of a given size, cost of 178

Gasometer, tank of cast iron, of a given size, cost of 178

Gasometer, tank of brick work, of a given size, cost of 178

Gasometer, tank of wood, of a given size, cost of 178

Governor, or regulating guage 261

Governor, its application and efficacy 171

Governor, directions to workmen for fixing it 229

H.

Horizontal rotary retort. (See rotary retort horizontal) 110

L.

Lamps for burning coal gas 253

Lamps for burning coal gas, quantity of gas consumed by different kinds, in a given time 275

Lime machine originally employed, defects, and dangerous consequences to which it gave rise 141

Lime machine, lately adopted 149

Lime machine, at Birmingham gas works 149

Lime machine, at Chester gas works 149

Lime machine, at Royal Mint gas works 150

Lime machine, capacity requisite for purifying a given volume of gas in a given time 157

M.

Mains for conveying gas 245

Mains, average cost of a mile when laid in London 252

Mains, manner of proving them when laid 245

Mains, kind of, most economical for conveying gas 251

Mains, which do not supply branch pipes or lamps, observations on 250

Mains, faulty, how distinguished 240

Mercurial joint for pendent gas lamps 256

Muriate of ammonia, preparation of, from the ammoniacal liquor of coal 303

N.

Newcastle coal, maximum quantity of gas obtainable from different kinds 47

O.

Oven, for heating retorts, (See retort oven)

Oil, from coal tar 300

Oil gas 289

Oil gas, quantity obtainable from a given quantity of whale oil 296

Oven plan, of setting cast iron retorts 67

P.

Pendent gas lamp 257

Pipes, directions to workmen for adapting them to the interior of houses 258

Pitch from coal tar 302

Pitch, quantity obtainable from a given quantity of tar 302

Purifying apparatus, (See lime machine) 150

Q.

Quicklime, best method of preserving it for the purification of coal gas 160

Quicklime, quantity required for purifying a given volume of coal gas 162

R.

Reciprocating safety valve 196

Regulating guage, regulator, or governor 171 220

Regulating guage, at Birmingham Gas Works 177

Regulating guage, at Bristol Gas Works 177

Regulating guage, at Chester Gas Works 177

Retorts, cylindrical cast iron 52

Retorts, cylindrical, method of heating them by flues 59

Retorts, cylindrical, experiments on setting three to one fire place 61

Retorts, cylindrical, experiments on setting four to one fire place 53

Retorts, cylindrical, cost of erecting them 99

Retorts, cylindrical, best mode of working them 94

Retorts, cylindrical, minimum quantity of fuel required for working them 61

Retorts, cylindrical, temperature best adapted for working them 94

Retorts, cylindrical, conical 52

Retorts, cylindrical, conical, comparative power of 55

Retorts, cylindrical, ellipsoidal 53

Retorts, horizontal rotary 110

Retorts, horizontal rotary, at the Royal Mint Gas Works 112

Retorts, horizontal rotary, at Birmingham 111

Retorts, horizontal rotary, at Chester 111

Retorts, horizontal rotary, at Kidderminster 111

Retorts, horizontal rotary, action and management of 121

Retorts, horizontal rotary, advantages of 124

Retorts, horizontal rotary, directions to workmen with regard to working them 134

Retorts, parallelopipedal 52

Retorts, parallelopipedal, comparative power of 55

Retorts, parallelopipedal, best mode of working them 93

Retorts, semi-cylindrical 53

Retorts, oven, description of, at the Westminster and City of London Gas Works 69

Retorts, oven, experiments on 84

Revolving gas holder, at the Westminster Gas Works 181

Revolving gas holder, rule for calculating its capacity 185

S.

Safety valve, reciprocating 196

Self-acting guage, (see governor) 171

Siphon 221

Sliding chandelier 257

South London Gas Works 69

Spigot and faucit pipes 241

Staffordshire coal 44

Swing bracket gas burner 257

T.

Tar, quantity obtainable from a given quantity of coal 130

Tar gas, quantity obtainable from a given quantity of coal tar 287

Tar gas, from vegetable tar 284

Tar, retort 285

Temperature for working cast iron retorts, remarks on 94

Test apparatus, for certifying the proper manner of working the lime machine 157

Theory of the production of gas lights 39

Towns lighted with gas 149

V.

Valve of gas holder 221

Valve, hydraulic 116

Valve, of horizontal rotary retort 116 124

Valve, lime machine 156

Valve, reciprocating 196

Ventilation of rooms lighted by gas 276

W.

Water reservoir, (See Siphon) 221

Wheel work, registering of gas metre 218