rters
that he built his present laboratories at Orange, New Jersey. These
laboratories are now housed in two beautiful, four story brick
buildings each sixty feet wide by one hundred feet long. In addition
to these laboratories there are Edison factories located in various
sections of the country.

Though now seventy years of age, he is devoting all his time and the
time of his laboratory force in solving the great problems connected
with the present war.

* * * * *

"_A tool is but the extension of a man's hand, and a machine is but a
complete tool. And he that invents a machine augments the power of a
man and the well being of mankind._" --HENRY WARD BEECHER.

[Illustration: ALEXANDER GRAHAM BELL
Inventor of the Telephone]

ALEXANDER GRAHAM BELL

There is in New York City a great building seven hundred and fifty
feet high. It has fifty-three stories, and provides business homes for
ten thousand persons.

If you had watched it rise from story to story, you would have been
amazed at the tons of cable running from the basement towards the
roof. You would have exclaimed in wonder over the miles upon miles of
wire that extended from room to room. Suppose you had asked the
purpose of these wires and cables. Do you know what the answer would
have been? You would have been told that they were placed there so a
person in any room of the building could talk to some one in any other
room within the towering walls; to any one outside in the great city,
and even to persons far away in Chicago and St. Louis. Then you would
have said, "Of course, they are telephone wires."

You use the telephone often, do you not? Probably if you were asked to
say how many times you had talked over the telephone in your life, you
would have to reply, "More than I can remember."

Let us think about the messages we send along the telephone wires from
day to day. They are for the most part of two kinds. We have friendly
talks with persons we know well, and we give brief business orders at
office and shop.

But if we were gunners in the army of our country we should be told by
telephone just when, where, and how we were to fire our guns. We
would not see our target, but would shoot according to the directions
of a commanding officer who knows what must be done and telephones his
orders to us.

If we were acting with hundreds of persons in a great scene for a
motion picture film, we