Atthesewordsacoldshiverranthroughme. YetIcontrolledmyself;Ievenresolvedtoputagoodfaceuponit. ScientificargumentsalonecouldhaveanyweightwithProfessorLiedenbrock. Nowthereweregoodonesagainstthepracticabilityofsuchajourney.Penetratetothecentreoftheearth!Whatnonsense! ButIkeptmydialecticbatteryinreserveforasuitableopportunity,andIinterestedmyselfintheprospectofmydinner,whichwasnotyetforthcoming. Itisnousetotelloftherageandimprecationsofmyunclebeforetheemptytable. Explanationsweregiven,Marthawassetatliberty,ranofftothemarket,anddidherpartsowellthatinanhourafterwardsmyhungerwasappeased,andIwasabletoreturntothecontemplationofthegravityofthesituation. Duringalldinnertimemyunclewasalmostmerry;heindulgedinsomeofthoselearnedjokeswhichneverdoanybodyanyharm.Dessertover,hebeckonedmeintohisstudy. Iobeyed;hesatatoneendofhistable,Iattheother. "Axel,"saidheverymildly;"youareaveryingeniousyoungman,youhavedonemeasplendidservice,atamomentwhen,weariedoutwiththestruggle,Iwasgoingtoabandonthecontest.WhereshouldIhavelostmyself?Nonecantell. Never,mylad,shallIforgetit;andyoushallhaveyourshareintheglorytowhichyourdiscoverywilllead." "Oh,come!"thoughtI,"heisinagoodway.Nowisthetimefordiscussingthatsameglory." "Beforeallthings,"myuncleresumed,"Ienjoinyoutopreservethemostinviolablesecrecy:youunderstand? Therearenotafewinthescientificworldwhoenvymysuccess,andmanywouldbereadytoundertakethisenterprise,towhomourreturnshouldbethefirstnewsofit." "Doyoureallythinktherearemanypeopleboldenough?"saidI. "Certainly;whowouldhesitatetoacquiresuchrenown?Ifthatdocumentweredivulged,awholearmyofgeologistswouldbereadytorushintothefootstepsofArneSaknussemm." "Idon'tfeelsoverysureofthat,uncle,"Ireplied;"forwehavenoproofoftheauthenticityofthisdocument." "What!notofthebook,insidewhichwehavediscoveredit?" "Granted.IadmitthatSaknussemmmayhavewrittentheselines.Butdoesitfollowthathehasreallyaccomplishedsuchajourney?Andmayitnotbethatthisoldparchmentisintendedtomislead?" Ialmostregrettedhavingutteredthislastword,whichdroppedfrommeinanunguardedmoment. TheProfessorbenthisshaggybrows,andIfearedIhadseriouslycompromisedmyownsafety.Happilynogreatharmcameofit. Asmileflittedacrossthelipofmyseverecompanion,andheanswered: "Ah!"saidI,ratherputout."Butdoletmeexhaustallthepossibleobjectionsagainstthisdocument." "Speak,myboy,don'tbeafraid.Youarequiteatlibertytoexpressyouropinions.Youarenolongermynephewonly,butmycolleague.Praygoon." "Well,inthefirstplace,IwishtoaskwhatarethisJokul,thisSneffels,andthisScartaris,nameswhichIhaveneverheardbefore?" "Nothingeasier.Ireceivednotlongagoamapfrommyfriend,AugustusPetermann,atLiepzig.Nothingcouldbemoreapropos. Takedownthethirdatlasinthesecondshelfinthelargebookcase,seriesZ,plate4." Irose,andwiththehelpofsuchpreciseinstructionscouldnotfailtofindtherequiredatlas.Myuncleopeneditandsaid: "HereisoneofthebestmapsofIceland,thatofHandersen,andIbelievethiswillsolvetheworstofourdifficulties." "Youseethisvolcanicisland,"saidtheProfessor;"observethatallthevolcanoesarecalledjokuls,awordwhichmeansglacierinIcelandic,andunderthehighlatitudeofIcelandnearlyalltheactivevolcanoesdischargethroughbedsofice. HencethistermofjokulisappliedtoalltheeruptivemountainsinIceland." "Verygood,"saidI;"butwhatofSneffels?" Iwashopingthatthisquestionwouldbeunanswerable;butIwasmistaken.Myunclereplied: "FollowmyfingeralongthewestcoastofIceland.DoyouseeRejkiavik,thecapital?Youdo. Well;ascendtheinnumerablefiordsthatindentthosesea–beatenshores,andstopatthesixty–fifthdegreeoflatitude.Whatdoyouseethere?" "Iseeapeninsulalookinglikeathighbonewiththekneeboneattheendofit." "Averyfaircomparison,mylad.Nowdoyouseeanythinguponthatkneebone?" "Yes;amountainrisingoutofthesea." "Itis.Itisamountainfivethousandfeethigh,oneofthemostremarkableintheworld,ifitscraterleadsdowntothecentreoftheearth." "Butthatisimpossible,"Isaidshruggingmyshoulders,anddisgustedatsucharidiculoussupposition. "Impossible?"saidtheProfessorseverely;"andwhy,pray?" "Becausethiscraterisevidentlyfilledwithlavaandburningrocks,andtherefore–" "Butsupposeitisanextinctvolcano?" "Yes;thenumberofactivevolcanoesonthesurfaceoftheglobeisatthepresenttimeonlyaboutthreehundred. Butthereisaverymuchlargernumberofextinctones.Now,Snaefellisoneofthese. Sincehistorictimestherehasbeenbutoneeruptionofthismountain,thatof1219;fromthattimeithasquieteddownmoreand. more,andnowitisnolongerreckonedamongactivevolcanoes." TosuchpositivestatementsIcouldmakenoreply.Ithereforetookrefugeinotherdarkpassagesofthedocument. "WhatisthemeaningofthiswordScartaris,andwhathavethekalendsofJulytodowithit?" Myuncletookafewminutestoconsider.ForoneshortmomentIfeltarayofhope,speedilytobeextinguished.Forhesoonansweredthus: "Whatisdarknesstoyouislighttome. ThisprovestheingeniouscarewithwhichSaknussemmguardedanddefinedhisdiscovery. Sneffels,orSnaefell,hasseveralcraters. Itwasthereforenecessarytopointoutwhichoftheseleadstothecentreoftheglobe.WhatdidtheIcelandicsagedo? HeobservedthatattheapproachofthekalendsofJuly,thatistosayinthelastdaysofJune,oneofthepeaks,calledScartaris,flungitsshadowdownthemouthofthatparticularcrater,andhecommittedthatfacttohisdocument. Couldtherepossiblyhavebeenamoreexactguide? AssoonaswehavearrivedatthesummitofSnaefellweshallhavenohesitationastotheproperroadtotake." Decidedly,myunclehadansweredeveryoneofmyobjections. Isawthathispositionontheoldparchmentwasimpregnable. Ithereforeceasedtopresshimuponthatpartofthesubject,andasaboveallthingshemustbeconvinced,Ipassedontoscientificobjections,whichinmyopinionwerefarmoreserious. "Well,then,"Isaid,"IamforcedtoadmitthatSaknussemm'ssentenceisclear,andleavesnoroomfordoubt. Iwillevenallowthatthedocumentbearseverymarkandevidenceofauthenticity. ThatlearnedphilosopherdidgettothebottomofSneffels,hehasseentheshadowofScartaristouchtheedgeofthecraterbeforethekalendsofJuly;hemayevenhaveheardthelegendarystoriestoldinhisdayaboutthatcraterreachingtothecentreoftheworld;butasforreachingithimself,asforperformingthejourney,andreturning,ifheeverwent,Isayno–henever,neverdidthat." "Nowforyourreason?"saidmyuncleironically. "Allthetheoriesofsciencedemonstratesuchafeattobeimpracticable." "Thetheoriessaythat,dothey?"repliedtheProfessorinthetoneofameekdisciple."Oh!unpleasanttheories!Howthetheorieswillhinder.us,won'tthey?" Isawthathewasonlylaughingatme;butIwentonallthesame. "Yes;itisperfectlywellknownthattheinternaltemperaturerisesonedegreeforevery70feetindepth;now,admittingthisproportiontobeconstant,andtheradiusoftheearthbeingfifteenhundredleagues,theremustbeatemperatureof360,032degreesatthecentreoftheearth. Therefore,allthesubstancesthatcomposethebodyofthisearthmustexistthereinastateofincandescentgas;forthemetalsthatmostresisttheactionofheat,gold,andplatinum,andthehardestrocks,canneverbeeithersolidorliquidundersuchatemperature. Ihavethereforegoodreasonforaskingifitispossibletopenetratethroughsuchamedium." "So,Axel,itistheheatthattroublesyou?" "Ofcourseitis.Werewetoreachadepthofthirtymilesweshouldhavearrivedatthelimitoftheterrestrialcrust,fortherethetemperaturewillbemorethan2372degrees." "Areyouafraidofbeingputintoastateoffusion?" "Iwillleaveyoutodecidethatquestion,"Iansweredrathersullenly. "Thisismydecision,"repliedProfessorLiedenbrock,puttingononeofhisgrandestairs. "Neitheryounoranybodyelseknowswithanycertaintywhatisgoingonintheinteriorofthisglobe,sincenotthetwelvethousandthpartofitsradiusisknown;scienceiseminentlyperfectible;andeverynewtheoryissoonroutedbyanewer. WasitnotalwaysbelieveduntilFourierthatthetemperatureoftheinterplanetaryspacesdecreasedperpetually? andisitnotknownatthepresenttimethatthegreatestcoldoftheetherealregionsisneverlowerthan40degreesbelowzeroFahr.? Whyshoulditnotbethesamewiththeinternalheat? Whyshoulditnot,atacertaindepth,attainanimpassablelimit,insteadofrisingtosuchapointastofusethemostinfusiblemetals?" Asmyunclewasnowtakinghisstanduponhypotheses,ofcourse,therewasnothingtobesaid. "Well,Iwilltellyouthattruesavants,amongstthemPoisson,havedemonstratedthatifaheatof360,000degrees[1]existedintheinterioroftheglobe,thefierygasesarisingfromthefusedmatterwouldacquireanelasticforcewhichthecrustoftheearthwouldbeunabletoresist,andthatitwouldexplodeliketheplatesofaburstingboiler." "ThatisPoisson'sopinion,myuncle,nothingmore." "Granted.Butitislikewisethecreedadoptedbyotherdistinguishedgeologists,thattheinterioroftheglobeisneithergasnorwater,noranyoftheheaviestmineralsknown,forinnoneofthesecaseswouldtheearthweighwhatitdoes." "Oh,withfiguresyoumayproveanything!" "Butisitthesamewithfacts!Isitnotknownthatthenumberofvolcanoeshasdiminishedsincethefirstdaysofcreation? andifthereiscentralheatmaywenotthenceconcludethatitisinprocessofdiminution?" "Mygooduncle,ifyouwillenterintothelegionofspeculation,Icandiscussthematternolonger." "ButIhavetotellyouthatthehighestnameshavecometothesupportofmyviews.Doyourememberavisitpaidtomebythecelebratedchemist,HumphryDavy,in1825?" "Notatall,forIwasnotbornuntilnineteenyearsafterwards." "Well,HumphryDavydidcalluponmeonhiswaythroughHamburg. Wewerelongengagedindiscussing,amongstotherproblems,thehypothesisoftheliquidstructureoftheterrestrialnucleus. Wewereagreedthatitcouldnotbeinaliquidstate,forareasonwhichsciencehasneverbeenabletoconfute." [1]ThedegreesoftemperaturearegivenbyJulesVerneaccordingtothecentigradesystem,forwhichwewillineachcasesubstitutetheFahrenheitmeasurement.(Tr.) "Whatisthatreason?"Isaid,ratherastonished. "Becausethisliquidmasswouldbesubject,liketheocean,tothelunarattraction,andthereforetwiceeverydaytherewouldbeinternaltides,which,upheavingtheterrestrialcrust,wouldcauseperiodicalearthquakes!" "Yetitisevidentthatthesurfaceoftheglobehasbeensubjecttotheactionoffire,"Ireplied,"anditisquitereasonabletosupposethattheexternalcrustcooleddownfirst,whilsttheheattookrefugedowntothecentre." "Quiteamistake,"myuncleanswered."Theearthhasbeenheatedbycombustiononitssurface,thatisall. Itssurfacewascomposedofagreatnumberofmetals,suchaspotassiumandsodium,whichhavethepeculiarpropertyofignitingatthemerecontactwithairandwater;thesemetalskindledwhentheatmosphericvapoursfellinrainuponthesoil;andbyandby,whenthewaterspenetratedintothefissuresofthecrustoftheearth,theybrokeoutintofreshcombustionwithexplosionsanderuptions. Suchwasthecauseofthenumerousvolcanoesattheoriginoftheearth." "Uponmyword,thisisaverycleverhypothesis,"Iexclaimed,inspiteratherofmyself. "AndwhichHumphryDavydemonstratedtomebyasimpleexperiment. HeformedasmallballofthemetalswhichIhavenamed,andwhichwasaveryfairrepresentationofourglobe;wheneverhecausedafinedewofraintofalluponitssurface,itheavedupintolittlemonticules,itbecameoxydizedandformedminiaturemountains;acraterbrokeopenatoneofitssummits;theeruptiontookplace,andcommunicatedtothewholeoftheballsuchaheatthatitcouldnotbeheldinthehand." Intruth,IwasbeginningtobeshakenbytheProfessor'sarguments,besideswhichhegaveadditionalweighttothembyhisusualardourandfervententhusiasm. "Yousee,Axel,"headded,"theconditionoftheterrestrialnucleushasgivenrisetovarioushypothesesamonggeologists;thereisnoproofatallforthisinternalheat;myopinionisthatthereisnosuchthing,itcannotbe;besidesweshallseeforourselves,and,likeArneSaknussemm,weshallknowexactlywhattoholdastruthconcerningthisgrandquestion." "Verywell,weshallsee,"Ireplied,feelingmyselfcarriedoffbyhiscontagiousenthusiasm."Yes,weshallsee;thatis,ifitispossibletoseeanythingthere." "Andwhynot?Maywenotdependuponelectricphenomenatogiveuslight?Maywenotevenexpectlightfromtheatmosphere,thepressureofwhichmayrenderitluminousasweapproachthecentre?" "Yes,yes,"saidI;"thatispossible,too." "Itiscertain,"exclaimedmyuncleinatoneoftriumph."Butsilence,doyouhearme? silenceuponthewholesubject;andletnoonegetbeforeusinthisdesignofdiscoveringthecentreoftheearth."