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.

Every great invention, afterward marvelled at, was first derided. Each
great inventor, after solving problems in mechanics or chemistry, had to
face the jeers of the incredulous.