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Show Tlis tim CnMi in Isrn, In modern cables tho corn Is nl-w nl-w iy protei toil Hint by n serving of heinpor Juto and then by nil outer ehenth of Milt steel wires, which nru relied 011 to furiiUh tho mcclmnlciit Mn ngth wliieh tho (Miblu intut liavo In order thutltinay stnud tho pulling nlsmt which it ieceiesiu lajitigntiil rrpairinp;. Hut in tlio plom er trial tin re was no Idea of a protecting Khcutli; Iho nuked core wns (o Isi laid in tho Channel to form tho first lelo graph lsjtwi en i:iigland nnd I'rnnce. 'J'ii'ro wns bill 11 single wire of etip-lier etip-lier Inside (now add j s thero Is nlw ays a Klranil of sovenil wires (wistcd ( gethel), mid (his was coveivd with gtitta 1 ivh.i so thickly as tu bring tho dhmi'ler to half nn inch. Tlio covered wim was wound nun great reel on tho deck of a steam tug In Dover li.irlmr. and nf tcr u numlier of preliminniy trlllio llnowim laid 011 Aug. 2.'i, lu50 IaiiiI elnkei-s Wero at-tached at-tached ut every 1U0 yards to carry (ho ' able tu (hu Isiltom, for in tho nWnco of nny heavy sheathing lu Bla-cillo gratlty tcnrcely cxcecili-d (hat of sen water. , Tlio alteinpt was at oncoiiuulo.to open cominunlcatloii, hut, though signals aocincd topasd, nothing could Ik) niailu of them, ami Mr. HinKli records re-cords that tho aiienitoni ut itu.1i end wero ivgrotfully foived lo (ho con-chutioiithit con-chutioiithit thu 10 nt thu other did hud been lliucliltig, not wisely, but too well. Next d.iy uuttLi-H "were worse; uo signals would juuerat nil. Thouiibluwiisjirokeii, und nocudid this hi-jtiiUeinptntHubmarliiotckg rnjihy. Tho signal! of (hu first day had lieen unintelligible, not U-cnttso of nify hreiich of continuity on tho part of tho cable or failure in tPiiinctunco on tho p.nt of lu gniinlintis, but simply In cuirRHpu nee of ehi trostatic induction, (lie inllueiico of which in retarding the electric itilu-s wiu not then tinderslood. Loudon Hatuiilay ltoviuw. |
