of air 147
Water 96
Volume, specific, of steam 115
Waste heat, auxiliary grates with boilers for 235
Babcock & Wilcox boilers set for use with 236
Boiler design for 233
Curve of temperature, heat absorption, and heating surface 235
Draft for 233
Fans for use with 233
Power obtainable from 232
Temperature of, from various processes 232
Utilization of 232
Water, air in boiler feed 106
Boiling points of 97
Compressibility of 97
Water feed, impurities in 100
Methods of feeding to boiler 132
Saving by heating 110
Treatment (see Feed water).
Water-gas tar 225
Heat of the liquid 120
Path of, in Babcock & Wilcox boilers 57
Properties of 96
Records 293
Specific heat of 99
Volume of 96
Weight of 96, 120
Watt, James 17
Weathering of coal 169
Webster furnace 55
Weight of air 147
Wilcox boiler 25
Wood, combustion of dry 202
Wet 203
Composition and heat value of 201
Furnace design for 201
Moisture in