velopments, in both the personal and executive sides, embody
the true romance of the modern business world.

The great scientists and engineers who have wrought these wonders
which have had so profound an influence upon the life of the
world lived, and are living, lives filled with patient effort,
discouragement, accomplishment, and real romance. They are interesting
men who have done interesting things. Better still, they have done
important, useful things. This book relates their life stories in a
connected form, for they have all worked for a similar end. The story
of these men, who, starting in early youth in the pursuit of a great
idea, have achieved fame and success and have benefited civilization,
cannot but be inspiring. They did not stumble upon their discoveries
by any lucky accident. They knew what they sought, and they labored
toward the goal with unflagging zeal. Had they been easily discouraged
we might still be dependent upon the semaphore and the pony express
for the transmission of news. But they persevered until success was
attained, and in the account of their struggle to success every one
may find encouragement in facing his own tasks.

One can scarce overestimate the value of modern methods of
communication to the world. So much of our development has been more
or less directly dependent upon it that it is difficult to fancy our
situation without the telegraph and telephone. The diligence with
which the ancients sought speedy methods for the sending of messages
demonstrates the human need for them. The solution of this great
problem, though long delayed, came swiftly, once it was begun.

Even the simple facts regarding "Masters of Space" and their lives of
struggle and accomplishment in sending messages between distant points
form an inspiring story of great achievement.

W.K.T.

#MASTERS OF SPACE#

I

COMMUNICATION AMONG THE ANCIENTS

Signaling the Fall of Troy--Marine Signaling among the
Argonauts--Couriers of the Greeks, Romans, and
Aztecs--Sound-signaling--Stentorophonic Tube--The Shouting
Sentinels--The Clepsydra--Signal Columns--Indian Fire and Smoke
Signals.

It was very early in the history of the world that man began to feel
the urgent need of communicating with man at a distance. When village
came into friendly contact with village, when nations began to
form and expand, the necessity of sending intelligence rapidly and
effectively was clearly