Show the lo 10 london n aon paris telephone Tl ephon manchester guardian Guw dlan to transmit the sound of the human voice voi ce through twenty twenty four fou r milca miles of water to say nothing of miles of land line has been regarded as impossible the retardation of the current in a submarine marine cable over even short distances having been found sufficient to reduce all articulate sounds to an indefinite murmur the most moat important submarine telephone ex asting is that across the river la plata from buenos ayres to montevideo te a comparatively short hort a distance and that is hardly a success the french government which hag has shown remarkable energy in the development of the national telephone system however aspired to overcome the difficulties and to establish a speaking I 1 communication with london and the english tele 9 department at st martins le 0 grand rand undertook to grapel with the problem under the direction of air mr freece the chief engineer a number of experiments with cables have been made and a new cable designed in which e every V cry resource of electrical electr icil engineering 13 has been employed to secure success the cable cons consists ests of four thick copper wires two wires will be required for a single line as a complete metallic circle is one 0 of f the first essentials the other wires will be available to duplicate the line if successful and in the meantime they will be used to supplement the telegraphic service A new set of posts entirely separate from any tiny other w wires i res have been erected from london to dover carrying two wires to the cable and these are fixed to the posts in a it specia special i way and crossed continually all these precautions are taken in or order der to reduce the induction to a minimum tha the wires used throughout both the english land line and the submarine cables cabes are of three times the usual weight of solid copper being COO pounds per mile weight the french line from paris to calais is a little lighter ita its tare st margarets bay near dear dover and bangs sangatte San gatte tte near calais the cable has been cons cone strutted ted in england and will ba be laid by the english department but tho the cost will no be divided the eighty milea miles efland of land line from LO london n do to st margarets Alar garets bay is is practically completed as is the line constructed ted by the french govern over the miles from paria paris to hargette Sar gette I 1 since tho the above was written the cable has been successfully laid and is in operation |