Таинственный остров

           CyrusHardingthentooktwoslipsofzinc,oneofwhichwasplungedintoazoticacid,theotherintoasolutionofpotash.Acurrentwasimmediatelyproduced,whichwastransmittedfromtheslipofzincinthebottletothatinthetube,andthetwoslipshavingbeenconnectedbyametallicwiretheslipinthetubebecamethepositivepole,andthatinthebottlethenegativepoleoftheapparatus.Eachbottle,therefore,producedasmanycurrentsasunitedwouldbesufficienttoproduceallthephenomenaoftheelectrictelegraph.SuchwastheingeniousandverysimpleapparatusconstructedbyCyrusHarding,anapparatuswhichwouldallowthemtoestablishatelegraphiccommunicationbetweenGraniteHouseandthecorral.

           Onthe6thofFebruarywascommencedtheplantingalongtheroadtothecorral,ofpostsfurnishedwithglassinsulators,andintendedtosupportthewire.Afewdaysafter,thewirewasextended,readytoproducetheelectriccurrentatarateoftwentythousandmilesasecond.

           Twobatterieshadbeenmanufactured,oneforGraniteHouse,theotherforthecorral;forifitwasnecessarythecorralshouldbeabletocommunicatewithGraniteHouseitmightalsobeusefulthatGraniteHouseshouldbeabletocommunicatewiththecorral.

           Astothereceiverandmanipulator,theywereverysimple.Atthetwostationsthewirewaswoundroundamagnet,thatistosay,roundapieceofsoftironsurroundedwithawire.

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