Fire tube, compared with water tube 61
Guerney's 24
Horse power 263
Loads, economical 283
Perkins' 24
Room piping 108
Room practice 297
Rumsey's 23
Stevens', John 23
Stevens', John Cox 23
Units, number of 289
Units, size of 289
Wilcox's 25
Woolf's 23
Boilers, capacity of 278
Care of 291
Efficiency of 256
Horse power of 265
Operation of 291
Requirements of steam 27
Testing 267
Boiling point 86
Of various substances 86
Of water as affected by altitude 97
Brick, fire 304
Arches 305
Classification of 304
Compression of 303
Expansion of 303
Hardness of 303
Laying up 305
Nodules, ratio of 303
Nodules, size of 303
Plasticity of 302
Brick, red 302
Brickwork, care of 307
British thermal u