Show Pitor TROW BRIDGES plan of submarine sub-marine telephony in which speech was to be transmitted between vessels at sea without the aid of any connecting wire I has been abandoned as impracticable as the system upon which Mr Edison has been experimenting in Florida is more promising of good results In this system sys-tem the telephone signals by long am short explosive sounds instead of bj spoken words and communications have been successfully exchanged through the water between vessels from three to four miles apart with the prospect that the working limit may be increased with improvements im-provements in the apparatus |