The steam engine familiarly explained and illustrated; with an historical sketch of its invention and progressive improvement; its applications to navigation and railways; with plain maxims for railway speculators. By the Rev. Dionysius Lardner ... With additions and notes by James Renwick ...

16 CONTENTS.
Page
nally suggested by Watt.-Hall's Steam Saver.-Howard's Vrapour
Engine.-Morgan's Paddle 5WTheels.-Limits of Steam Navigation.Proportion of Tonnage to Power.-Average Speed.-Consuimption of
Fuel.-Iron Steamers.-American Steam Raft.-Steamr Navigation to
India.-By Egypt and the Red Sea to Bombay.-By same Route to
Calcutta.-By Syria and the Euphrates to Bombay.-Steam Comnmunication with the United States from the west Coast of Ireland to St. Johns,
Halifax, and New York.......................................... 241
CHAPTER XIII.
SENERAL ECONOM3Y OF STEAMS POWER.
Mechanical Efficacy of Steam; proportional to the Quantity of Water
evaporated, and to the Fuel consumed; independent of the Pressure.Its mechanical Efficacy by Condensation alone; by Condensation and
Expansion combined; by direct Pressure and Expansion; by direct
Pressure and Condensation; by direct Pressure, Condensation, and Expansion.-The Power of Engines.-The Duty of Engines.-Meaning
of Horse Power.-To compute the Power of an Engine.-Of the Power
of Boilers.-The Structure of the Grate Bars.-Quantity of Water and
Steam Room.-Fire Surface and Flue Surface.-Dimensions of Steam
Pipes.-Velocity of Piston.-Economy of Fuel.-Cornish Duty Reports.................................................,....... 277
CHAPTER XIV.
Plain Rules for Railway Speculators........................ 307