LIST OF ILLUSTRATIONSThe Drop Forge—Forging a Steel PlateFrontispieceFACING PAGERaising Water with a Chain of Pots—a Primitive Pump Used in Egypt32Horse-Operated Chain Pump Used in Greece32Multiple Spindle Drill in a Motor Car Factory33Bucket of a Giant Dredge with Its Jaws Wide Open64Gold Dredge Eating Its Way Through River Sands65Suction Dredge Excavating a Channel and Building New Land65Air Lock of a Pneumatic Caisson96Subaqueous Tunnel Showing the Shield in the Background97Wharf Protected by a Pneumatic Breakwater128Sun-Power Plant in Egypt129Close-Up of One of the Reflectors of a Sun-Power Plant129Giant Caproni Hydroaeroplane160Concrete Steamship “Faith”161“Virginian,” the Largest Locomotive in the World161Loom Provided with a Jacquard Attachment224Battery of Mule Spinning Frames225Jacquard Attachment for Loom225Digging a Trench with a Machine of the Chain Type256Multiple Plowing on a Western Wheat Field257Sawing Logs of Pulpwood into 16-Inch Lengths288Heater in a Pulp Mill Where the Wood Pulp Is Mixed with Clay288Modern Fourdrinier Paper-Making Machines289Molten Metal from a Blast Furnace320Bessemer Converter Blowing Air Through a Mass of Molten Iron320Steel Beam Passing Through the Finishing Rolls321Compositor at Work on a Linotype Machine352The Optophone, Which Enables the Blind to Read Print353Blind Man Reading with His Ears353
LIST OF ILLUSTRATIONSThe Drop Forge—Forging a Steel PlateFrontispieceFACING PAGERaising Water with a Chain of Pots—a Primitive Pump Used in Egypt32Horse-Operated Chain Pump Used in Greece32Multiple Spindle Drill in a Motor Car Factory33Bucket of a Giant Dredge with Its Jaws Wide Open64Gold Dredge Eating Its Way Through River Sands65Suction Dredge Excavating a Channel and Building New Land65Air Lock of a Pneumatic Caisson96Subaqueous Tunnel Showing the Shield in the Background97Wharf Protected by a Pneumatic Breakwater128Sun-Power Plant in Egypt129Close-Up of One of the Reflectors of a Sun-Power Plant129Giant Caproni Hydroaeroplane160Concrete Steamship “Faith”161“Virginian,” the Largest Locomotive in the World161Loom Provided with a Jacquard Attachment224Battery of Mule Spinning Frames225Jacquard Attachment for Loom225Digging a Trench with a Machine of the Chain Type256Multiple Plowing on a Western Wheat Field257Sawing Logs of Pulpwood into 16-Inch Lengths288Heater in a Pulp Mill Where the Wood Pulp Is Mixed with Clay288Modern Fourdrinier Paper-Making Machines289Molten Metal from a Blast Furnace320Bessemer Converter Blowing Air Through a Mass of Molten Iron320Steel Beam Passing Through the Finishing Rolls321Compositor at Work on a Linotype Machine352The Optophone, Which Enables the Blind to Read Print353Blind Man Reading with His Ears353