CONTENTS. 



HISTORICAL SKETCH OF THE INTRODUCTION OF LIGHTING BY COAL-GAS .... 1 



CHEMISTRY, AS APPLIED TO THE MANUFACTURE OF COAL-GAS 24 



COAL 34 



EXPERIMENTS ON THE PRODUCTS FROM COAL 37 



CORRECTIONS FOR MOISTURE IN GAS 47 



ADVANTAGES OF GAS 52 



RETORTS 59 



EARTHEN RETORTS 88 



BRICKWORK 96 



CONSTRUCTION OF CHIMNEYS 102 



FIRE-BRICKS, ETC 106 



PURIFIERS 108 



GAS-METER 122 



GASOMETERS 130 



TELESCOPE GASOMETER 134 



WEIGHTS AND ESTIMATES OF GASOMETERS 139 



THE GOVERNOR 145 



PRESSURE INDICATOR 149 



EQUILIBRIUM OF FLUIDS 152 







VALVES 155 



STREET-MAINS 159 



SOCKETS it. 



JOINTS "... 161 



ELASTIC JOINT 163 



DISTRIBUTION OF GAS THROUGH MAINS 166 



SERVICES 18 



BURNERS 190 



SECONDARY PRODUCTS . 198 



COKE it. 



COAL-TAR . . .199 



AMMONIACAL LIQUOR 201 



