| 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 | 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 |
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