INDEX. 



ACKERMAN'S, Mr., premises lighted by coal- 

 gas page 15 



Acetate of lead, test of .... . . 32,119 



Advantages of gas-lights 52 



Affinity, chemical 24 



Ammonia, properties of 32 



, carbonate of 204 



, muriate of ib. 



Ammoniacal liquor 201 



, quantity produced by the 



distillation of coal 71 



, properties of, as manure . 202 



Analysis of coal-gas 40 



Anthracite coal 36 



Apparatus, self-acting 137 



, specific gravity .... 133, 147 



Atmospheric air, composition of .... 28 



-, quantity of, required for the 



combustion of coal-gas 1 90 



Atomic theory 25 



Bends, effects of, on the passage of gas through 



bituminous coal 35 



" Blow," cause of, in street-mains . . . 168 

 Bladders, forming a temporary valve with . 158 



Bonnets 63 



Breeze condenser 115 



Bricks, fire . . . ....:... .106 



, prices and dimensions of ... 107 



Brickwork 96 



Bridge pipe 63 



Brunton's patent retort 77 



Burners, rules for the construction of . .190 



, argand 192 



, bat's- wing . . .... .21,195 



, cock's-spur 9, 195 



Burners, plate page 193 



, safety 194 



Caloric, effects and nature of 27 



Carbon, nature and properties of .... 29 



Carbonaceous deposit in retorts .... 92 



, mode of clearing 75 



Carbonic oxide, acid, and carburetted hydro- 

 gen gases 29, 30 



Cement, iron 61 



Charge of D retorts 59 



Charging scoop 61 



Chartered Gas Company, operations of . . 16 

 Chemistry, as applied to the manufacture of 



coal-gas 24 



Chimneys, construction of 102 



Chlorine gas, properties of 33 



Circular retorts, form of 60 



Clearing interior of retorts 75 



Clay retorts 88 



Coal, composition and geological origin of . 34 



, anthracite 36 



, bituminous mineral 35 



, bituminous wood or bovey .... ib. 



, black and brown coal of Werner . . ib. 



, cannel 36 



, coarse ib. 



, common brown 35 



, compound varieties ib. 



, earthy ib. 



, foliated 36 



, Forest of Dean and Gloucester . . 37 



, Moor 35 



, Newcastle and Staffordshire beds . . 36 



, pitch ib. 



, slate ib. 



