INDEX.
329
PAGE
Retorts cylindrical, temperature best adapted for
working- them ...... 94
-conical ..... 52
-comparative power of . 55
-ellipsoidal. .... 53
-horizontal rotary . . . . .110
-at the Royal Mint Gas
Works.112
-Chester . . . Ill
-action and management of 121
-advantages of . . . 124
---directions to workmen with
regard to working them .... 134
-parallelopipedal ..... 52
-comparative power of . 55
-best mode of working them 93
-semi-cylindrical ... 53
-oven, description of, at the Westminster and
City of London Gas Works ... 69
-experiments on .... 84
Revolving gas holder, at the Westminster Gas Works 181-rule for calculating its capa-
185
196
171
221
257
city ....
S.
Safety valve, reciprocating .Self-acting guage, (see governor)Siphon ....Sliding chandelier