[Steam.]

[CHAP. III.--EXPANSION OF STEAM AND ACTION OF THE VALVES.]

[CHAP. IV.--MODES OF ESTIMATING THE POWER AND PERFORMANCE OF ENGINES AND BOILERS.]

[Horses Power.]

[Duty of Engines and Boilers.]

[The Indicator.]

[Dynamometer, Gauges, and Cataract.]

[CHAP. V.--PROPORTIONS OF BOILERS.]

[Heating and Fire Grate Surface.]

[Calorimeter and Vent.]