In 1982 the strange experiment was made of navigating a large ocean electric ship [Sailed his Ship from Land.] from Manhattan (old N. Y.), to Queenstown. The name of the vessel was the City of Sidney. After the pilot had dropped off at the Hook, Captain Sherman, of the Electric Belt Line of vessels, remained in his private office in the forty-third story of Anti-Trust building on 59th street, Manhattan, and issued his commands by wireless telegraph to the first officer of the City of Sidney. Reports reached the captain every six hours, giving the exact latitude and longitude and the ship's course was directed from the captain's private office on 59th street in the city of Manhattan. In other words it was the city of Manhattan that kept the City of Sidney on the move, so to speak. The ship's course, conduct of the crew, the health of the passengers, the reports of passing electrical vessels, the velocity of wind and other details of navigation, were communicated to Captain Sherman, whose orders were given and obeyed as readily as though issued from the bridge or deck of the City of Sidney. When that vessel arrived off Queenstown to land the U. S. of the A. mails, Capt. Sherman in 59th street ordered half speed and finally stopped the electric engines. Of course, while navigating his immense vessel across the ocean and remaining seated in his office at home, Captain Sherman could not assume his place in the saloon at the head of the table. Wireless telegraphy could not, with all its ingenuity, satisfy one's appetite at the sumptuous dinners served on board the City of Sidney. But this demonstrated to the world in 1982 that with wireless telegraphy commanders could remain in their office on shore and sail their ships to foreign ports in perfect safety. This was done in 1982 just as easily as the old style train dispatcher controlled far away trains in 1899 while seated in his own office. The Marconi system of wireless telegraphy, when perfected in 1920, employed the Hertzian magnetic waves, which are identical with the waves of light. Whenever an electric spark is made to leap from one electrode to another, one of these waves is created. The Marconi instruments for sending and receiving are tuned to each other and are then invulnerable to the attack of waves of different lengths. These rays of electricity are reflected and directed in a given direction like rays of [A Marvelous Invention.] light. An electric circuit with a key, gives the basis of the Marconi system. This circuit runs through a spark coil with an oscillator to produce continuous electric sparking so long as the circuit is kept closed by the key--and from this the sparking wires run out of doors to the pole from which the messages are sent.