Machine generated contents note: I.The Revival of Water Power -- II.Coal, Gas, and Petroleum -- III.Steam Power -- IV.Gas, Petrol, and Oil Engines -- V.Generation and Transmission of Electricity -- VI.Electric Lighting and Heating -- VII.Speed and Economy in Factory and Work-shop -- VIII.Foundry and Forge -- IX.The Electric Furnace and its Applications -- X.The Artificial Production of Cold and its Applications -- XI.Soil and Crops -- XII.Railways -- XIII.Electric Traction -- XIV.Motor-Cars -- XV.Modern Shits -- XVI.The Conquest of the Air -- XVII.Wireless Telegraphy -- XVIII.Ships of War and their Weapons -- XIX.Some Applications of Photography -- XX.Radium, Electricity, and Matter.