many other scientists in America and elsewhere, it remained for that
distinguished group of American scientists and engineers working under
my charge to be the first to transmit the tones of the human voice in
the form of intelligible speech across the Atlantic Ocean. This great
event and those immediately preceding it are so fresh in the public
mind that I will make but a brief reference to them here.

On April 4, 1915, we were successful in transmitting speech without
the use of wires from our radio station at Montauk Point on Long
Island to Wilmington, Delaware.

On May 18th we talked by radio telephone from our station on Long
Island to St. Simon Island in the Atlantic Ocean, off the coast of
Georgia.

On the 27th of August, with our apparatus installed by permission of
the Navy Department at the Arlington, Virginia, radio station, speech
was successfully transmitted from that station to the Navy wireless
station equipped with our receiving apparatus at the Isthmus of
Panama.

On September 29th, speech was successfully transmitted by wire from
New York City to the radio station at Arlington, Virginia, and thence
by wireless telephone across the continent to the radio station at
Mare Island Navy-yard, California, where I heard and understood the
words of Mr. Theodore N. Vail speaking to me from the telephone on his
desk at New York.

On the next morning at about one o'clock, Washington time, we
established wireless telephone communication between Arlington,
Virginia, and Pearl Harbor in the Hawaiian Islands, where an engineer
of our staff, together with United States naval officers, distinctly
heard words spoken into the telephone at Arlington, Virginia. On
October 22d, from the Arlington tower in Virginia, we successfully
transmitted speech across the Atlantic Ocean to the Eiffel Tower at
Paris, where two of our engineers, in company with French military
officers, heard and understood the words spoken at Arlington.

On the same day when speech was being transmitted by the apparatus at
Arlington to our engineers and to the French military officers at the
Eiffel Tower in Paris, our telephone engineer at Pearl Harbor, Hawaii,
together with an officer of the United States Navy, heard the words
spoken from Arlington to Paris and recognized the voice of the
speaker.

As a result of exhaustive researches, too extensive to describe here,
it has been ascertained that the function of the wireless telephone
is not