CONTENTS
[How Guglielmo Marconi Telegraphs Without Wires]
[Santos-Dumont and His Air-Ship]
[How a Fast Train Is Run]
[How Automobiles Work]
[The Fastest Steamboats]
[The Life-Savers and Their Apparatus]
[Moving Pictures—Some Strange Subjects and How They Were Taken]
[Bridge Builders and Some of Their Achievements]
[Submarines in War and Peace]
[Long-Distance Telephony—What Happens When You Talk into a Telephone Receiver]
[A Machine That Thinks—A Type-Setting Machine That Makes Mathematical Calculations]
[How Heat Produces Cold—Artificial Ice-Making]
LIST OF ILLUSTRATIONS
[Marconi Reading a Message Frontispiece]
[Marconi Station at Wellfleet, Massachusetts]
[The Wireless Telegraph Station at Glacé Bay]
[Santos-Dumont Preparing for a Flight]
[Rounding the Eiffel Tower]
[The Motor and Basket of "Santos-Dumont No. 9"]
[Firing a Fast Locomotive]
[Track Tank]
[Railroad Semaphore Signals]
[Thirty Years' Advance in Locomotive Building]
[The "Lighthouse" of the Rail]
[A Giant Automobile Mower-Thrasher]
[An Automobile Buckboard]
[An Automobile Plow]
[The Velox, of the British Navy]
[The Engines of the Arrow]
[A Life-Saving Crew Drilling]
[Life-Savers at Work]
[Biograph Pictures of a Military Hazing]
[Developing Moving-Picture Films]
[Building an American Bridge in Burmah]
[Viaduct Across Canyon Diablo]
[Beginning an American Bridge in Mid-Africa]
[Lake's Submarine Torpedo-Boat Protector]
[Speeding at the Rate of 102 Miles an Hour]
[Singing Into the Telephone]
["Central" Telephone Operators at Work]
[Central Making Connections]
[The Back of a Telephone Switchboard]
[A Few Telephone Trunk Wires]
[The Lanston Type-Setter Keyboard]
[Where the "Brains" are Located]
[The Type Moulds and the Work They Produce]
INTRODUCTION
There are many thrilling incidents—all the more attractive because of their truth—in the study, the trials, the disappointments, the obstacles overcome, and the final triumph of the successful inventor.