330

INDEX.

PAGE

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

-gas, quantity obtainable from a given quantity

of coal tar ...... 287

-from vegetable tar . . . . 284

-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

-hydraulic ....... 116

-of horizontal rotary retort . . .116 124

-lime machine ...... 156

-reciprocating . . . . . .196

Ventilation of rooms lighted by gas . . 276

W.

Water reservoir, (See Siphon)

Wheel work, registering of gas metre

221

218