Таємничий острів

           Beforeanythingelsecouldbedoneitwasnecessarytomaketheironore,ofwhichtheengineerhadobservedsometracesinthenorthwestpartoftheisland,fitforusebyconvertingiteitherintoironorintosteel.

           Metalsarenotgenerallyfoundinthegroundinapurestate.Forthemostparttheyarecombinedwithoxygenorsulphur.SuchwasthecasewiththetwospecimenswhichCyrusHardinghadbroughtback,oneofmagneticiron,notcarbonated,theotherapyrite,alsocalledsulphuretofiron.Itwas,thereforethefirst,theoxideofiron,whichtheymustreducewithcoal,thatistosay,getridoftheoxygen,toobtainitinapurestate.Thisreductionismadebysubjectingtheorewithcoaltoahightemperature,eitherbytherapidandeasyCatalanmethod,whichhastheadvantageoftransformingtheoreintoironinasingleoperation,orbytheblastfurnace,whichfirstsmeltstheore,thenchangesitintoiron,bycarryingawaythethreetofourpercent.ofcoal,whichiscombinedwithit.

           NowCyrusHardingwantediron,andhewishedtoobtainitassoonaspossible.Theorewhichhehadpickedupwasinitselfverypureandrich.Itwastheoxydulousiron,whichisfoundinconfusedmassesofadeepgraycolor;itgivesablackdust,crystallizedintheformoftheregularoctahedron.Nativelodestonesconsistofthisore,andironofthefirstqualityismadeinEuropefromthatwithwhichSwedenandNorwayaresoabundantlysupplied.Notfarfromthisveinwastheveinofcoalalreadymadeuseofbythesettlers.

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