Show BELL UNDER THE SEA NOVEL WARNING TO SHIPS OF approaching PERIL electricity Electr city conveyed by cable from the shore operates mchan M chan sound travels five or ten M les through water washington A novel method to inform ship captain ot the approach of their vessels to the danger one has been perfected in connection with the nse of the system ot submarine bell signals places wl ere the bell cannot be placed on a ll ht ship or lighthouse the electric bell Is hung from a tripod set on the bottom 0 the sea at the edge of the shoal at the ailred point and this bell is struck by a mechanism operated by a cur rent of electricity conveyed through a cable the signil station on shore such a station at point aller ton mass and at the en trance to hal fax harbor are operated with cables more than two miles long the bell an code that Is desired and the sound travels through the water so that vessels ti om five to ten miles away hear it and get diorec ace irately in a tog or at night ahn equipped with a receiving appa ratus the lighthouse board has made ar range ments to place these submarine signals on all light ships not already equipped including the alve vessels approaching completion at the yards of the new york shipbuilding com pany and the tour to be built at the fore river yards at mass the board also has arranged tor elec trie shore stations at the delaware harbor refuge and at detroit the en trance of st mary a river and lake superior the canadian government Is install ing such bells at st J ans Louls burg and yarmouth and when the work now ordered by the two governments is completed every harbor in north america will be protected |