altercation as to which deserved the honor of inventing the same.
The quarrel was finally submitted to two famous scientists for
arbitration. They reported that the telegraph was the result of
their joint labors. To Wheatstone belongs the credit for devising
the apparatus; to Cooke for introducing it and placing it before the
public in working form. Here we see the combination of the man of
science and the man of business, each contributing needed talents for
the establishment of a great invention on a working basis.

Wheatstone's researches in the field of electricity were constant.
In 1840 he devised a magnetic clock and proposed a plan by which many
clocks, located at different points, could be set at regular intervals
with the aid of electricity. Such a system was the forerunner of
the electrically wound and regulated clocks with which we are now so
familiar. He also devised a method for measuring the resistance which
wires offer to the passage of an electric current. This is known
as Wheatstone's bridge and is still in use in every electrical and
physical laboratory. He also invented a sound telegraph by which
signals were transmitted by the strokes of a bell operated by the
current at the receiving end of the circuit.

The invention of Wheatstone's which proved to be of greatest lasting
importance in connection with the telegraph was the automatic
transmitter. By this system the message is first punched in a strip of
paper which, when passed through the sending instrument, transmits the
message. By this means he was able to send messages at the rate of one
hundred words a minute. This automatic transmitter is much used for
press telegrams where duplicate messages are to be sent to various
points.