fire bars, ash box, and chimney;
  steam dome used only in old engines;
  manhole, mudholes, and blow-oft cock;
  tube plate, and mode of securing tubes;
  expanding mandrels;
  various forms of regulator. 
Boilers of modern locomotives. 
Boiler, the, proper care of, the first duty of the engineer. 
Bolts, proper proportions of. 
Boring of cylinders. 
Boulton and Watt’s rules for fly wheel,
  proportions of marine flue boilers;
  rule for proportions of chimneys of land boilers;
  of marine boilers;
  experiments on the resistance of vessels in water. 
Bourdon’s steam and vacuum gauges. 
Bourne, expansion valves by. 
Bourne, Messrs. J. & Co., direct acting screw engines by. 
Brass for bearings, composition of. 
Brazing solders. 
Bridges in furnaces, benefits of. 
Burning of boilers, precautions against. 
Bursting velocity of fly wheel,
  and of railway wheels. 
Bursting of boilers,
  causes of;
  precautions against;
  may be caused by accumulations of salt. 
Butterfly valves of air pump.

Cabrey, expansion valve by. 
Calorimeter of boilers, definition of. 
Cams, proper forms of. 
Cast iron, strength of,
  proportions of cast iron beams;
  effects of different kinds of strains on beams;
  strength to resist shocks not proportional to strength to resist
    strains;
  to attain maximum strength should be combined with wrought iron. 
Casting of cylinders. 
Case-hardening, how to accomplish. 
Cataract, explanation of nature and uses of. 
Caulking of land boilers. 
Cement, mastic, for setting marine boilers. 
Central forces. 
Centre of pressure of paddle wheels. 
Centres of gravity, gyration and oscillation. 
Centres for fixing arms of paddle wheel. 
Centres of an engine, how to lay off. 
Centrifugal force, nature of,
  rule for determining;
  bursting velocity of fly wheel;
  and of railway wheels. 
Centrifugal pump will supersede common pump. 
Centripetal force, nature of. 
Chimney of locomotives. 
Chimney of steam vessels, what to do if carried away. 
Chimneys of land boilers,
  Boulton and Watt’s rule for proportions of;
  of marine boilers. 
Chimneys, exhaustion produced by,
  high and wide chimneys in locomotives injurious. 
Chimneys of steamboats,
  telescope. 
Clark’s patent steam fire regulator. 
Coal, constituents of,
  combustion of air required for;
  evaporative efficacy of;
  of wood, turf, and coke. 
Cocks, proper construction of. 
Cog wheels for screw engines. 
Coke, evaporative efficacy of. 
Cold water pump, description of,
  rule for size of. 
Combustion, nature of. 
Combustion of coal, air required for. 
Combustion, slow and rapid, comparative merits of,
  rapid combustion necessary in steam vessels, and enables less heating,