Consequently,above,below,andaroundtheNautilus,therewereimpenetrablefrozenwalls.WeweretheIceBank'sprisoners! TheCanadianbangedatablewithhisfearsomefist.Conseilkeptstill.Istaredatthecaptain. Hisfacehadresumeditsusualemotionlessness.Hecrossedhisarms.Hepondered.TheNautilusdidnotstir. Thecaptainthenbrokeintospeech: "Gentlemen,"hesaidinacalmvoice,"therearetwowaysofdyingundertheconditionsinwhichwe'replaced." Thisinexplicableindividualactedlikeamathematicsprofessorworkingoutaproblemforhispupils. "Thefirstway,"hewenton,"isdeathbycrushing.Thesecondisdeathbyasphyxiation. Idon'tmentionthepossibilityofdeathbystarvationbecausetheNautilus'sprovisionswillcertainlylastlongerthanwewill. Therefore,let'sconcentrateonourchancesofbeingcrushedorasphyxiated." "Asforasphyxiation,Captain,"Ireplied,"thatisn'tacauseforalarm,becausetheairtanksarefull." "True,"CaptainNemowenton,"butthey'llsupplyairforonlytwodays. Nowthen,we'vebeenburiedbeneaththewatersforthirty–sixhours,andtheNautilus'sheavyatmospherealreadyneedsrenewing. Inanotherforty–eighthours,ourreserveairwillbeusedup." "Wellthen,Captain,let'sfreeourselveswithinforty–eighthours!" "We'lltrytoatleast,bycuttingthroughoneofthesewallssurroundingus." "Boringswilltellusthat.I'mgoingtogroundtheNautilusonthelowershelf,thenmymenwillputontheirdivingsuitsandattackthethinnestoftheseicewalls." "Canthepanelsintheloungebeleftopen?" "Withoutilleffect.We'renolongerinmotion." CaptainNemowentout.Hissingsoundssoontoldmethatwaterwasbeingadmittedintotheballasttanks. TheNautilusslowlysettledandrestedontheicybottomatadepthof350meters,thedepthatwhichthelowershelfoficelaysubmerged. "Myfriends,"Isaid,"we'reinaseriouspredicament,butI'mcountingonyourcourageandenergy." "Sir,"theCanadianreplied,"thisisnotimetoboreyouwithmycomplaints.I'mreadytodoanythingIcanforthecommongood." "Excellent,Ned,"Isaid,extendingmyhandtotheCanadian. "Imightadd,"hewenton,"thatI'mashandywithapickasaharpoon.IfIcanbehelpfultothecaptain,hecanusemeanywayhewants." "Hewon'tturndownyourassistance.Comealong,Ned." IledtheCanadiantotheroomwheretheNautilus'smenwereputtingontheirdivingsuits. IinformedthecaptainofNed'sproposition,whichwaspromptlyaccepted. TheCanadiangotintohisunderwatercostumeandwasreadyassoonashisfellowworkers. EachofthemcarriedonhisbackaRouquayroldevicethattheairtankshadsuppliedwithagenerousallowanceoffreshoxygen. AconsiderablebutnecessarydrainontheNautilus'sreserves. AsfortheRuhmkorfflamps,theywereunnecessaryinthemidstofthesebrilliantwaterssaturatedwithourelectricrays. AfterNedwasdressed,Ireenteredthelounge,whosewindowshadbeenuncovered;stationednexttoConseil,IexaminedthestratasurroundingandsupportingtheNautilus. Somemomentslater,wesawadozencrewmensetfootontheshelfofice,amongthemNedLand,easilyrecognizedbyhistallfigure.CaptainNemowaswiththem. Beforediggingintotheice,thecaptainhadtoobtainborings,toinsureworkinginthebestdirection. Longboresweredrivenintothesidewalls;butafterfifteenmeters,theinstrumentswerestillimpededbythethicknessofthosewalls. ItwasfutiletoattacktheceilingsincethatsurfacewastheIceBankitself,morethan400metershigh. CaptainNemothenboredintothelowersurface. Therewewereseparatedfromtheseabyaten–meterbarrier.That'showthicktheicebergwas. Fromthispointon,itwasanissueofcuttingoutapieceequalinsurfaceareatotheNautilus'swaterline. Thismeantdetachingabout6,500cubicmeters,todigaholethroughwhichtheshipcoulddescendbelowthistractofice. Workbeganimmediatelyandwascarriedonwithtirelesstenacity. InsteadofdiggingallaroundtheNautilus,whichwouldhaveentailedevengreaterdifficulties,CaptainNemohadanimmensetrenchoutlinedontheice,eightmetersfromourportquarter. Thenhismensimultaneouslystakeditoffatseveralpointsarounditscircumference. Soontheirpickswerevigorouslyattackingthiscompactmatter,andhugechunkswereloosenedfromitsmass. Thesechunksweighedlessthanthewater,andbyanunusualeffectofspecificgravity,eachchunktookwing,asitwere,totheroofofthetunnel,whichthickenedabovebyasmuchasitdiminishedbelow. Butthishardlymatteredsolongasthelowersurfacekeptgrowingthinner. Aftertwohoursofenergeticwork,NedLandreentered,exhausted.Heandhiscompanionswerereplacedbynewworkmen,includingConseilandme.TheNautilus'schiefofficersupervisedus. Thewaterstruckmeasunusuallycold,butIwarmeduppromptlywhilewieldingmypick.Mymovementswerequitefree,althoughtheywereexecutedunderapressureofthirtyatmospheres. Aftertwohoursofwork,reenteringtosnatchsomefoodandrest,IfoundanoticeabledifferencebetweenthecleanelasticfluidsuppliedmebytheRouquayroldeviceandtheNautilus'satmosphere,whichwasalreadychargedwithcarbondioxide. Theairhadn'tbeenrenewedinforty–eighthours,anditslife–givingqualitieswereconsiderablyweakened. Meanwhile,aftertwelvehourshadgoneby,wehadremovedfromtheoutlinedsurfaceareaasliceoficeonlyonemeterthick,henceabout600cubicmeters. Assumingthesameworkwouldbeaccomplishedeverytwelvehours,itwouldstilltakefivenightsandfourdaystoseetheundertakingthroughtocompletion. "Fivenightsandfourdays!"Itoldmycompanions."Andwehaveoxygenintheairtanksforonlytwodays." "Withouttakingintoaccount,"Nedanswered,"thatoncewe'reoutofthisdamnedprison,we'llstillbecoopedupbeneaththeIceBank,withoutanypossiblecontactwiththeopenair!" Anaptremark.Forwhocouldpredicttheminimumtimewewouldneedtofreeourselves? BeforetheNautiluscouldreturntothesurfaceofthewaves,couldn'twealldieofasphyxiation? Werethisshipandeveryoneonboarddoomedtoperishinthistombofice?Itwasadreadfulstateofaffairs. Butwefacedithead–on,eachoneofusdeterminedtodohisdutytotheend. Duringthenight,inlinewithmyforecasts,anewone–meterslicewasremovedfromthisimmensesocket. Butinthemorning,wearingmydivingsuit,Iwascrossingthroughtheliquidmassinatemperatureof–6°to–7°centigrade,whenInotedthatlittlebylittlethesidewallswereclosinginoneachother. Theliquidstratafarthestfromthetrench,notwarmedbythemovementsofworkmenandtools,wereshowingatendencytosolidify. Inthefaceofthisimminentnewdanger,whatwouldhappentoourchancesforsalvation,andhowcouldwepreventthisliquidmediumfromsolidifying,thencrackingtheNautilus'shulllikeglass? Ididn'ttellmytwocompanionsaboutthisnewdanger. Therewasnopointindampeningtheenergytheywereputtingintoourarduousrescuework. ButwhenIreturnedonboard,ImentionedthisseriouscomplicationtoCaptainNemo. "Iknow,"hetoldmeinthatcalmtonethemostdreadfuloutlookcouldn'tchange. "It'sonemoredanger,butIdon'tknowanywayofwardingitoff. Oursolechanceforsalvationistoworkfasterthanthewatersolidifies. We'vegottogettherefirst,that'sall." Gettherefirst!BythenIshouldhavebeenusedtothistypeoftalk! Forseveralhoursthatday,Iwieldedmypickdoggedly.Theworkkeptmegoing. Besides,workingmeantleavingtheNautilus,whichmeantbreathingthecleanoxygendrawnfromtheairtanksandsuppliedbyourequipment,whichmeantleavingthethin,foulairbehind. Neareveningonemoremeterhadbeendugfromthetrench. WhenIreturnedonboard,Iwaswellnighasphyxiatedbythecarbondioxidesaturatingtheair. Oh,ifonlywehadthechemicalmethodsthatwouldenableustodriveoutthisnoxiousgas!Therewasnolackofoxygen. Allthiswatercontainedaconsiderableamount,andafteritwasdecomposedbyourpowerfulbatteries,thislife–givingelasticfluidcouldhavebeenrestoredtous. Ihadthoughtitallout,buttonoavailbecausethecarbondioxideproducedbyourbreathingpermeatedeverypartoftheship. Toabsorbit,wewouldneedtofillcontainerswithpotassiumhydroxideandshakethemcontinually. Butthissubstancewasmissingonboardandnothingelsecouldreplaceit. ThateveningCaptainNemowasforcedtoopenthespigotsofhisairtanksandshootafewspoutsoffreshoxygenthroughtheNautilus'sinterior. Withoutthisprecautionwewouldn'thaveawakenedthefollowingmorning. Thenextday,March26,Ireturnedtomyminer'strade,workingtoremovethefifthmeter. TheIceBank'ssidewallsandunderbellyhadvisiblythickened. ObviouslytheywouldcometogetherbeforetheNautiluscouldbreakfree. ForaninstantIwasgrippedbydespair.Mypicknearlyslippedfrommyhands. WhatwasthepointofthisdiggingifIwastodiesmotheredandcrushedbythiswaterturningtostone,atortureundreamedofbyeventhewildestsavages! IfeltlikeIwaslyinginthejawsofafearsomemonster,jawsirresistiblyclosing. Supervisingourwork,workinghimself,CaptainNemopassednearmejustthen. Itouchedhimwithmyhandandpointedtothewallsofourprison. ThestarboardwallhadmovedforwardtoapointlessthanfourmetersfromtheNautilus'shull. Thecaptainunderstoodandgavemeasignaltofollowhim.Wereturnedonboard.Mydivingsuitremoved,Iwentwithhimtothelounge. "ProfessorAronnax,"hetoldme,"thiscallsforheroicmeasures,orwe'llbesealedupinthissolidifiedwaterasifitwerecement." "Yes!"Isaid."Butwhatcanwedo?" "Oh,"heexclaimed,"ifonlymyNautiluswerestrongenoughtostandthatmuchpressurewithoutbeingcrushed!" "Well?"Iasked,notcatchingthecaptain'smeaning. "Don'tyouunderstand,"hewenton,"thatthecongealingofthiswatercouldcometoourrescue? Don'tyouseethatbysolidifying,itcouldburstthesetractsoficeimprisoningus,justasitsfreezingcanburstthehardeststones? Aren'tyouawarethatthisforcecouldbetheinstrumentofoursalvationratherthanourdestruction?" "Yes,Captain,maybeso.ButwhateverresistancetocrushingtheNautilusmayhave,itstillcouldn'tstandsuchdreadfulpressures,anditwouldbesquashedasflatasapieceofsheetiron." "Iknowit,sir.Sowecan'trelyonnaturetorescueus,onlyourownefforts.Wemustcounteractthissolidification.Wemustholditincheck. Notonlyarethesidewallsclosingin,buttherearen'ttenfeetofwateraheadorasternoftheNautilus. Allaroundus,thisfreezeisgainingfast." "Howlong,"Iasked,"willtheoxygenintheairtanksenableustobreatheonboard?" Thecaptainlookedmestraightintheeye. "Aftertomorrow,"hesaid,"theairtankswillbeempty!" Ibrokeoutinacoldsweat.ButwhyshouldIhavebeenstartledbythisreply? OnMarch22theNautilushaddivedundertheopenwatersatthepole.Itwasnowthe26th. Wehadlivedofftheship'sstoresforfivedays! Andallremainingbreathableairhadtobesavedfortheworkmen. EventodayasIwritetheselines,mysensationsaresointensethataninvoluntaryterrorsweepsoverme,andmylungsstillseemshortofair! Meanwhile,motionlessandsilent,CaptainNemostoodlostinthought.Anideavisiblycrossedhismind.Butheseemedtobrushitaside.Hetoldhimselfno.Atlastthesewordsescapedhislips: "Boilingwater!"hemuttered. "Boilingwater?"Iexclaimed. "Yes,sir.We'reshutupinarelativelyconfinedarea. IftheNautilus'spumpscontinuallyinjectedstreamsofboilingwaterintothisspace,wouldn'tthatraiseitstemperatureanddelayitsfreezing?" "It'sworthtrying!"Isaidresolutely. "Solet'stryit,Professor." Bythenthethermometergave–7°centigradeoutside. CaptainNemoledmetothegalleywhereahugedistillingmechanismwasatwork,supplyingdrinkingwaterviaevaporation. Themechanismwasloadedwithwater,andthefullelectricheatofourbatterieswasthrownintocoilsawashinliquid. Inafewminutesthewaterreached100°centigrade. Itwassenttothepumpswhilenewwaterreplaceditintheprocess. Theheatgeneratedbyourbatterieswassointensethataftersimplygoingthroughthemechanism,waterdrawncoldfromtheseaarrivedboilinghotatthebodyofthepump. Thesteamingwaterwasinjectedintotheicywateroutside,andafterthreehourshadpassed,thethermometergavetheexteriortemperatureas–6°centigrade.Thatwasonedegreegained. Twohourslaterthethermometergaveonly–4°. AfterImonitoredtheoperation'sprogress,double–checkingitwithmanyinspections,Itoldthecaptain,"It'sworking." "Ithinkso,"heansweredme."We'veescapedbeingcrushed.Nowwehaveonlyasphyxiationtofear." Duringthenightthewatertemperatureroseto–1°centigrade. Theinjectionscouldn'tgetittogoasingledegreehigher. Butsincesaltwaterfreezesonlyat–2°,Iwasfinallyassuredthattherewasnodangerofitsolidifying. Bythenextday,March27,sixmetersoficehadbeentornfromthesocket. Onlyfourmeterswerelefttoberemoved. Thatstillmeantforty–eighthoursofwork. Theaircouldn'tberenewedintheNautilus'sinterior. Accordingly,thatdayitkeptgettingworse. Anunbearableheavinessweighedmedown. Nearthreeo'clockintheafternoon,thisagonizingsensationaffectedmetoanintensedegree.Yawnsdislocatedmyjaws. Mylungsweregaspingintheirquestforthatenkindlingelasticfluidrequiredforbreathing,nowgrowingscarcerandscarcer.Mymindwasinadaze. Ilayoutstretched,strengthgone,nearlyunconscious. MygallantConseilfeltthesamesymptoms,sufferedthesamesufferings,yetneverleftmyside. Heheldmyhand,hekeptencouragingme,andIevenheardhimmutter: "Oh,ifonlyIdidn'thavetobreathe,toleavemoreairforMaster!" Itbroughttearstomyeyestohearhimsaythesewords. Sinceconditionsinsidewereuniversallyunbearable,howeagerly,howhappily,weputonourdivingsuitstotakeourturnsworking!Picksrangoutonthatbedofice. Armsgrewweary,handswererubbedraw,butwhocaredaboutexhaustion,whatdifferencewerewounds?Life–sustainingairreachedourlungs!Wecouldbreathe!Wecouldbreathe! Andyetnobodyprolongedhisunderwaterworkbeyondthetimeallottedhim. Hisshiftover,eachmansurrenderedtoagaspingcompaniontheairtankthatwouldrevivehim. CaptainNemosettheexampleandwasforemostinsubmittingtothisstrictdiscipline. Whenhistimewasup,heyieldedhisequipmenttoanotherandreenteredthefoulaironboard,alwayscalm,unflinching,anduncomplaining. Thatdaytheusualworkwasaccomplishedwithevengreaterenergy. Overthewholesurfacearea,onlytwometerswerelefttoberemoved. Onlytwometersseparatedusfromtheopensea. Buttheship'sairtankswerenearlyempty. Thelittleairthatremainedhadtobesavedfortheworkmen.NotanatomfortheNautilus! WhenIreturnedonboard,Ifelthalfsuffocated.Whatanight!I'munabletodepictit.Suchsufferingsareindescribable.ThenextdayIwasshort–winded. Headachesandstaggeringfitsofdizzinessmademereellikeadrunk. Mycompanionswereexperiencingthesamesymptoms.Somecrewmenwereattheirlastgasp. Thatday,thesixthofourimprisonment,CaptainNemoconcludedthatpicksandmattocksweretooslowtodealwiththeicelayerstillseparatingusfromopenwater—andhedecidedtocrushthislayer. Themanhadkepthisenergyandcomposure. Hehadsubduedphysicalpainwithmoralstrength.Hecouldstillthink,plan,andact. Athisordersthecraftwaseasedoff,inotherwords,itwasraisedfromitsicybedbyachangeinitsspecificgravity. Whenitwasafloat,thecrewtowedit,leadingitrightabovetheimmensetrenchoutlinedtomatchtheship'swaterline. Nexttheballasttanksfilledwithwater,theboatsank,andwasfittedintoitssocket. Justthenthewholecrewreturnedonboard,andthedoubleoutsidedoorwasclosed. BythispointtheNautiluswasrestingonabedoficeonlyonemeterthickanddrilledbyboresinathousandplaces. Thestopcocksoftheballasttankswerethenopenedwide,and100cubicmetersofwaterrushedin,increasingtheNautilus'sweightby100,000kilograms. Wewaited,welistened,weforgotoursufferings,wehopedoncemore.Wehadstakedoursalvationonthisonelastgamble. Despitethebuzzinginmyhead,IsooncouldhearvibrationsundertheNautilus'shull.Wetilted. Theicecrackedwithanoddrippingsound,likepapertearing,andtheNautilusbegansettlingdownward. "We'regoingthrough!"Conseilmutteredinmyear. Icouldn'tanswerhim.Iclutchedhishand.Isqueezeditinaninvoluntaryconvulsion. Allatonce,carriedawaybyitsfrightfulexcessload,theNautilussankintothewaterslikeacannonball,inotherwords,droppingasifinavacuum! Ourfullelectricpowerwasthenputonthepumps,whichinstantlybegantoexpelwaterfromtheballasttanks. Afterafewminuteswehadcheckedourfall. Thepressuregaugesoonindicatedanascendingmovement. Broughttofullspeed,thepropellermadethesheet–ironhulltrembledowntoitsrivets,andwespednorthward. ButhowlongwouldittaketonavigateundertheIceBanktotheopensea?Anotherday?Iwouldbedeadfirst! Halflyingonacouchinthelibrary,Iwassuffocating. Myfacewaspurple,mylipsblue,myfacultiesinabeyance.Icouldnolongerseeorhear.Ihadlostallsenseoftime.Mymuscleshadnopowertocontract. I'munabletoestimatethehoursthatpassedinthisway.ButIwasawarethatmydeaththroeshadbegun.IrealizedthatIwasabouttodie... SuddenlyIregainedconsciousness.Afewwhiffsofairhadenteredmylungs.Hadwerisentothesurfaceofthewaves?HadweclearedtheIceBank? No!NedandConseil,mytwogallantfriends,weresacrificingthemselvestosaveme. AfewatomsofairwerestillleftinthedepthsofoneRouquayroldevice. Insteadofbreathingitthemselves,theyhadsaveditforme,andwhiletheyweresuffocating,theypouredlifeintomedropbydrop!Itriedtopushthedeviceaway. Theyheldmyhands,andforafewmomentsIcouldbreatheluxuriously. Myeyesflewtowardtheclock.Itwaseleveninthemorning.IthadtobeMarch28.TheNautiluswastravelingatthefrightfulspeedoffortymilesperhour.Itwaswrithinginthewaters. WherewasCaptainNemo?Hadheperished?Hadhiscompanionsdiedwithhim? Justthenthepressuregaugeindicatedwewerenomorethantwentyfeetfromthesurface.Separatingusfromtheopenairwasameretractofice.Couldwebreakthroughit? Perhaps!InanyeventtheNautiluswasgoingtotry. Infact,Icouldfeelitassuminganobliqueposition,loweringitssternandraisingitsspur. Theadmissionofadditionalwaterwasenoughtoshiftitsbalance. Then,drivenbyitspowerfulpropeller,itattackedthisicefieldfrombelowlikeafearsomebatteringram. Itsplitthebarrierlittlebylittle,backingup,thenputtingonfullspeedagainstthepuncturedtractofice;andfinally,carriedawaybyitssuprememomentum,itlungedthroughandontothisfrozensurface,crushingtheicebeneathitsweight. Thehatcheswereopened—ortornoff,ifyouprefer—andwavesofcleanairwereadmittedintoeverypartoftheNautilus.