that John Carty, sitting with his ear
to the receiver, could hear the voice of his chief. Carty and his
associates had not only developed a system which made it possible to
talk across the continent without wires, but they had made it possible
to combine wire and wireless telegraphy. He and Vail talked with each
other freely and easily, while the naval officers who verified the
tests marveled.

But even more wonderful things were to come. Early in the morning of
the next day other messages were sent from the Arlington tower,
and these messages were heard by Lloyd Espenschied, one of Carty's
engineers, who was stationed at the wireless station at Pearl Harbor,
near Honolulu, Hawaii. The distance covered was nearly five thousand
miles, and half of it was across land, which is the more remarkable as
the wireless does not operate so readily over land as over water.
The distance covered in this test was greater than the distance
from Washington to London, Paris, Berlin, Vienna, or Petrograd. The
successful completion of this test meant that the capitals of the
great nations of the world might communicate, might talk with
one another, by wireless telephone. Only a receiving set had been
installed at Hawaii, so that it was not possible for Espenschied to
reply to the message from Arlington, and it was not until his message
came by cable that those at Arlington knew that the words they had
spoken had traveled five thousand miles. Other receiving sets had been
located at San Diego and at Darien on the Isthmus of Panama, and at
these points also the words were distinctly heard.

By the latter part of October all was in readiness for a transatlantic
test, and on the 20th of October American engineers, with American
apparatus installed at the great French station at the Eiffel Tower,
Paris, heard the words spoken at Arlington, Virginia. Carty and his
engineers had bridged the Atlantic for the spoken word. Because of
war-time conditions it was not possible to secure the use of the
French station for an extended test, but the fact was established that
once the apparatus is in place telephonic communication between Europe
and America may he carried on regularly.

The apparatus used as developed by the engineers of the Bell system
was in a measure an outgrowth of their work with the long-distance
telephone. Wireless telephony, despite the wonders it has already
accomplished, is still in its infancy. With more perfect apparatus
and