WithrespecttotheageatwhichtheseveralparallelridgescomposingtheCordillerawereupthrown，Ihavelittleevidence。Manyofthemmayhavebeencontemporaneouslyelevatedandinjectedinthesamemannerasinvolcanicarchipelagoeslavasarecontemporaneouslyejectedontheparallellinesoffissure。(“VolcanicIslands“etc。)Butthepebblesapparentlyderivedfromthewearandtearoftheporphyriticconglomerateformation，whichareoccasionallypresentintheupperpartsofthissameformation，andareoftenpresentinthegypseousformation，togetherwiththepebblesfromthebasalpartsofthelatterformationinitsupperstrata，renderitalmostcertainthatportions，wemayinferridges，ofthesetwoformationsweresuccessivelyupheaved。InthecaseofthegiganticPortillorange，wemayfeelalmostcertainthatapreexistinggraniticlinewasupraised(notbyasingleblow，asshownbythehighlyinclinedbasalticstreamsinthevalleyonitseasternflank)ataperiodlongsubsequenttotheupheavementoftheparallelPeuquenesrange。(Ihaveendeavouredtoshowinmy“Journal“2ndeditionpage321，thatthesingularfactoftheriver，whichdrainsthevalleybetweenthesetworanges，passingthroughthePortilloandhigherline，isexplainedbyitsslowandsubsequentelevation。Therearemanyanalogouscasesinthedrainageofrivers：see“EdinburghNewPhilosophicalJournal“volume28pages33and44。)Again，subsequentlytotheupheavementoftheCumbrechain，thatofUspallatawasformedandelevated;andafterwards，Imayadd，intheplainofUspallata，bedsofsandandgravelwereviolentlyupthrown。Themannerinwhichthevariouskindsofporphyriesandandesiteshavebeeninjectedoneintotheother，andinwhichtheinfinitelynumerousdikesofvariouscompositionintersecteachother，plainlyshowthatthestratifiedcrusthasbeenstretchedandyieldedmanytimesoverthesamepoints。WithrespecttotheageoftheaxesofelevationbetweenthePacificandtheCordillera，Iknowlittle：

buttherearesomelineswhichmust——namely，thoserunningnorthandsouthinChiloe，thoseeightornineeastandwest，parallel，far-extended，mostsymmetricaluniclinallinesatP。Rumena，andtheshortN。W-S。E。andN。E-

S。W。linesatConcepcion——havebeenupheavedlongaftertheformationoftheCordillera。Evenduringtheearthquakeof1835，whenthelinearnorthandsouthisletofSt。Marywasupliftedseveralfeetabovethesurroundingarea，weperhapsseeonefeeblestepintheformationofasubordinatemountain-axis。Insomecases，moreover，forinstance，nearthebathsofCauquenes，Iwasforciblystruckwiththesmallsizeofthebreachescutthroughtheexteriormountain-ranges，comparedwiththesizeofthesamevalleyshigherupwhereenteringtheCordillera;andthiscircumstanceappearedtomescarcelyexplicable，exceptontheideaoftheexteriorlineshavingbeensubsequentlyupthrown，andthereforehavingbeenexposedtoalessamountofdenudation。FromthemannerinwhichthefringesofgravelareprolongedinunbrokenslopesupthevalleysoftheCordillera，I

inferthatmostofthegreaterdislocationstookplaceduringtheearlierpartsofthegreatelevationinmass：Ihave，however，elsewheregivenacase，andM。deTschudihasgivenanother，ofaridgethrownupinPeruacrossthebedofariver，andconsequentlyafterthefinalelevationofthecountryabovethelevelofthesea。(“ReiseinPeru“Band2s。8：

Author’s“Journal“2ndeditionpage359。)

Ascendingtotheoldertertiaryformations，IwillnotagainrecapitulatetheremarksalreadygivenattheendoftheFifthChapter，——ontheirgreatextent，especiallyalongtheshoresoftheAtlantic——ontheirantiquity，perhapscorrespondingwiththatoftheeocenedepositsofEurope，——onthealmostentiredissimilarity，thoughtheformationsareapparentlycontemporaneous，ofthefossilsfromtheeasternandwesterncoasts，asislikewisethecase，eveninastillmoremarkeddegree，withtheshellsnowlivingintheseoppositethoughapproximateseas，——ontheclimateofthisperiodnothavingbeenmoretropicalthanwhatmighthavebeenexpectedfromthelatitudesoftheplacesunderwhichthedepositsoccur;acircumstancerenderedwellworthyofnotice，fromthecontrastwithwhatisknowntohavebeenthecaseduringtheoldertertiaryperiodsofEurope，andlikewisefromthefactofthesouthernhemispherehavingsufferedatamuchlaterperiod，apparentlyatthesametimewiththenorthernhemisphere，acolderormoreequabletemperature，asshownbythezonesformerlyaffectedbyice-action。NorwillIrecapitulatetheproofsofthebottomofthesea，bothontheeasternandwesterncoast，havingsubsidedsevenoreighthundredfeetduringthistertiaryperiod;themovementhavingapparentlybeenco-extensive，ornearlyco-extensive，withthedepositsofthisage。NorwillIagaingivethefactsandreasoningonwhichthepropositionwasfounded，thatwhenthebedoftheseaiseitherstationaryorrising，circumstancesarefarlessfavourablethanwhenitslevelissinking，totheaccumulationofconchiferousdepositsofsufficientthickness，extension，andhardnesstoresist，whenupheaved，theordinaryvastamountofdenudation。WehaveseenthatthehighlyremarkablefactoftheabsenceofanyEXTENSIVEformationscontainingrecentshells，eitherontheeasternorwesterncoastsofthecontinent，——thoughthesecoastsnowaboundwithlivingmollusca，——thoughtheyare，andapparentlyhavealwaysbeen，asfavourableforthedepositionofsedimentastheywerewhenthetertiaryformationswerecopiouslydeposited，——andthoughtheyhavebeenupheavedtoanamountquitesufficienttobringupstratafromthedepthsthemostfertileforanimallife——canbeexplainedinaccordancewiththeaboveproposition。Asadeduction，itwasalsoattemptedtobeshown，first，thatthewantofclosesequenceinthefossilsofsuccessiveformations，andofsuccessivestagesinthesameformation，wouldfollowfromtheimprobabilityofthesameareacontinuingslowlytosubsidefromonewholeperiodtoanother，orevenduringasingleentireperiod;andsecondly，thatcertainepochshavingbeenfavourableatdistantpoints，inthesamequarteroftheworldforthesynchronousaccumulationoffossiliferousstrata，wouldfollowfrommovementsofsubsidencehavingapparently，likethoseofelevation，contemporaneouslyaffectedverylargeareas。

Thereisanotherpointwhichdeservessomenotice，namely，theanalogybetweentheupperpartsofthePatagoniantertiaryformation，aswellasoftheupperpossiblycontemporaneousbedsatChiloeandConcepcion，withthegreatgypseousformationofCordillera;forinbothformations，therocks，intheirfusiblenature，intheircontaininggypsum，andinmanyothercharacters，showaconnection，eitherintimateorremote，withvolcanicaction;andasthestratainbothwereaccumulatedduringsubsidence，itappearsatfirstnaturaltoconnectthissinkingmovementwithastateofhighactivityintheneighbouringvolcanoes。Duringthecretaceo-ooliticperiodthiscertainlyappearstohavebeenthecaseatthePuentedelInca，judgingfromthenumberofintercalatedlava-streamsinthelower3，000

feetofstrata;butgenerally，thevolcanicorificesseematthistimetohaveexistedassubmarinesolfataras，andwerecertainlyquiescentcomparedwiththeirstateduringtheaccumulationoftheporphyriticconglomerateformation。DuringthedepositionofthetertiarystrataweknowthatatS。

Cruz，delugesofbasalticlavawerepouredforth;butastheselieintheupperpartoftheseries，itispossiblethatthesubsidencemayatthattimehaveceased：atChiloe，Iwasunabletoascertaintowhatpartoftheseriesthepileoflavasbelonged。TheUspallatatuffsandgreatstreamsofsubmarinelavas，wereprobablyintermediateinagebetweenthecretaceo-

ooliticandoldertertiaryformations，andweknowfromtheburiedtreesthattherewasagreatsubsidenceduringtheiraccumulation;buteveninthiscase，thesubsidencemaynothavebeenstrictlycontemporaneouswiththegreatvolcaniceruptions，forwemustbelieveinatleastoneintercalatedperiodofelevation，duringwhichthegroundwasupraisedonwhichthenowburiedtreesgrew。Ihavebeenledtomaketheseremarks，andtothrowsomedoubtonthestrictcontemporaneousnessofhighvolcanicactivityandmovementsofsubsidence，fromtheconvictionimpressedonmymindbythestudyofcoralformations，thatthesetwoactionsdonotgenerallygoonsynchronously;——onthecontrary，thatinvolcanicdistricts，subsidenceceasesassoonastheorificesburstforthintorenewedaction，andonlyrecommenceswhentheyagainhavebecomedormant。

(“TheStructureandDistributionofCoralReefs。”)

Atalaterperiod，thePampeanmud，ofestuaryorigin，wasdepositedoverawidearea，——inonedistrictconformablyontheunderlyingoldtertiarystrata，andinanotherdistrictunconformablyonthem，aftertheirupheavalanddenudation。Duringandbeforetheaccumulation，however，oftheseoldtertiarystrata，and，therefore，ataveryremoteperiod，sediment，strikinglyresemblingthatofthePampas，wasdeposited;showingduringhowlongatimeinthiscasethesameagencieswereatworkinthesamearea。

ThedepositionofthePampeanestuarymudwasaccompanied，atleastinthesouthernpartsofthePampas，byanelevatorymovement，sothattheM。

HermosobedsprobablywereaccumulatedaftertheupheavalofthoseroundtheS。Ventana;andthoseatP。AltaaftertheupheavaloftheM。Hermosostrata;butthereissomereasontosuspectthatoneperiodofsubsidenceintervened，duringwhichmudwasdepositedoverthecoarsesandoftheBarrancasdeS。Gregorio，andonthehigherpartsofBandaOriental。Themammiferousanimalscharacteristicofthisformation，manyofwhichdifferasmuchfromthepresentinhabitantsofSouthAmerica，asdotheeocenemammalsofEuropefromthepresentonesofthatquarteroftheglobe，certainlyco-existedatB。Blancawithtwentyspeciesofmollusca，onebalanus，andtwocorals，allnowlivingintheadjoiningsea：thisislikewisethecaseinPatagoniawiththeMacrauchenia，whichco-existedwitheightshells，stillthecommonestkindsonthatcoast。IwillnotrepeatwhatIhaveelsewheresaid，ontheplaceofhabitation，food，widerange，andextinctionofthenumerousgiganticmammifers，whichatthislateperiodinhabitedthetwoAmericas。

ThenatureandgroupingoftheshellsembeddedintheoldtertiaryformationsofPatagoniaandChileshowus，thatthecontinentatthatperiodmusthavestoodonlyafewfathomsbelowitspresentlevel，andthatafterwardsitsubsidedoverawidearea，sevenoreighthundredfeet。Themannerinwhichithassincebeenrebroughtuptoitsactuallevel，wasdescribedindetailintheFirstandSecondChapters。ItwasthereshownthatrecentshellsarefoundontheshoresoftheAtlantic，fromTierradelFuegonorthwardforaspaceofatleast1，180nauticalmiles，andattheheightofabout100feetinLaPlata，andof400feetinPatagonia。Theelevatorymovementsonthissideofthecontinenthavebeenslow;andthecoastofPatagonia，uptotheheightinonepartof950feetandinanotherof1，200feet，ismodelledintoeightgreat，step-like，gravel-cappedplains，extendingforhundredsofmileswiththesameheights;thisfactshowsthattheperiodsofdenudation(which，judgingfromtheamountofmatterremoved，musthavebeenlongcontinued)andofelevationweresynchronousoversurprisinglygreatlengthsofcoasts。OntheshoresofthePacific，upraisedshellsofrecentspecies，generally，thoughnotalways，inthesameproportionalnumbersasintheadjoiningsea，haveactuallybeenfoundoveranorthandsouthspaceof2，075miles，andthereisreasontobelievethattheyoccuroveraspaceof2，480miles。Theelevationonthiswesternsideofthecontinenthasnotbeenequable;atValparaiso，withintheperiodduringwhichupraisedshellshaveremainedundecayedonthesurface，ithasbeen1，300feet，whilstatCoquimbo，200milesnorthward，ithasbeenwithinthissameperiodonly252feet。AtLima，thelandhasbeenupliftedatleast80feetsinceIndianmaninhabitedthatdistrict;butthelevelwithinhistoricaltimesapparentlyhassubsided。AtCoquimbo，inaheightof364feet，theelevationhasbeeninterruptedbyfiveperiodsofcomparativerest。Atseveralplacesthelandhasbeenlately，orstillis，risingbothinsensiblyandbysuddenstartsofafewfeetduringearthquake-shocks;thisshowsthatthesetwokindsofupwardmovementareintimatelyconnectedtogether。Foraspaceof775miles，upraisedrecentshellsarefoundonthetwooppositesidesofthecontinent;andinthesouthernhalfofthisspace，itmaybesafelyinferredfromtheslopeofthelanduptotheCordillera，andfromtheshellsfoundinthecentralpartofTierradelFuego，andhighuptheRiverSantaCruz，thattheentirebreadthofthecontinenthasbeenuplifted。

>Fromthegeneraloccurrenceonbothcoastsofsuccessivelinesofescarpments，ofsand-dunesandmarksoferosion，wemustconcludethattheelevatorymovementhasbeennormallyinterruptedbyperiods，whenthelandeitherwasstationary，orwhenitroseatsoslowarateasnottoresisttheaveragedenudingpowerofthewaves，orwhenitsubsided。Inthecaseofthepresenthighsea-cliffsofPatagoniaandinotheranalogousinstances，wehaveseenthatthedifficultyinunderstandinghowstratacanberemovedatthosedepthsunderthesea，atwhichthecurrentsandoscillationsofthewateraredepositingasmoothsurfaceofmud，sand，andsiftedpebbles，leadstothesuspicionthattheformationordenudationofsuchcliffshasbeenaccompaniedbyasinkingmovement。

InSouthAmerica，everythinghastakenplaceonagrandscale，andallgeologicalphenomenaarestillinactiveoperation。Weknowhowviolentatthepresentdaytheearthquakesare，wehaveseenhowgreatanareaisnowrising，andtheplainsoftertiaryoriginareofvastdimensions;analmoststraightlinecanbedrawnfromTierradelFuegofor1，600milesnorthward，andprobablyforamuchgreaterdistance，whichshallintersectnoformationolderthanthePatagoniandeposits;soequablehasbeentheupheavalofthebeds，thatthroughoutthislongline，notafaultinthestratificationorabruptdislocationwasanywhereobservable。Lookingtothebasal，metamorphic，andplutonicrocksofthecontinent，theareasformedofthemarelikewisevast;andtheirplanesofcleavageandfoliationstrikeoversurprisinglygreatspacesinuniformdirections。TheCordillera，withitspinnacleshereandthererisingupwardsoftwentythousandfeetabovethelevelofthesea，rangesinanunbrokenlinefromTierradelFuego，apparentlytotheArcticcircle。Thisgrandrangehassufferedboththemostviolentdislocations，andslow，thoughgrand，upwardanddownwardmovementsinmass;Iknownotwhetherthespectacleofitsimmensevalleys，withmountain-massesofonceliquifiedandintrusiverocksnowbaredandintersected，orwhethertheviewofthoseplains，composedofshingleandsedimenthencederived，whichstretchtothebordersoftheAtlanticOcean，isbestadaptedtoexciteourastonishmentattheamountofwearandtearwhichthesemountainshaveundergone。

TheCordillerafromTierradelFuegotoMexico，ispenetratedbyvolcanicorifices，andthosenowinactionareconnectedingreattrains。Theintimaterelationbetweentheirrecenteruptionsandtheslowelevationofthecontinentinmass，appearstomehighlyimportant，fornoexplanationoftheonephenomenoncanbeconsideredassatisfactorywhichisnotapplicabletotheother。(OntheConnectionofcertainVolcanicPhenomenainSouthAmerica：“GeologicalTransactions“volume5page609。)Thepermanenceofthevolcanicactiononthischainofmountainsis，also，astrikingfact;first，wehavethedelugesofsubmarinelavasalternatingwiththeporphyriticconglomeratestrata，thenoccasionallyfeldspathicstreamsandabundantmineralexhalationsduringthegypseousorcretaceo-

ooliticperiod：thentheeruptionsoftheUspallatarange，andatanancientbutunknownperiod，whentheseacameuptotheeasternfootoftheCordillera，streamsofbasalticlavaatthefootofthePortillorange;

thentheoldtertiaryeruptions;andlastly，therearehereandthereamongstthemountains，muchwornandapparentlyveryancientvolcanicformationswithoutanycraters;thereare，also，cratersquiteextinct，andothersintheconditionofsolfataras，andothersoccasionallyorhabituallyinfierceaction。HenceitwouldappearthattheCordillerahasbeen，probablywithsomequiescentperiods，asourceofvolcanicmatterfromanepochanteriortoourcretaceo-ooliticformationtothepresentday;andnowtheearthquakes，dailyrecurrentonsomepartofthewesterncoast，givelittlehopethatthesubterraneanenergyisexpended。

Recurringtotheevidencebywhichitwasshownthatsomeatleastoftheparallelridges，whichtogethercomposetheCordillera，weresuccessivelyandslowlyupthrownatwidelydifferentperiods;andthatthewholerangecertainlyonce，andalmostcertainlytwice，subsidedsomethousandfeet，andbeingthenbroughtupbyaslowmovementinmass，again，duringtheoldtertiaryformations，subsidedseveralhundredfeet，andagainwasbroughtuptoitspresentlevelbyaslowandofteninterruptedmovement;weseehowopposedisthiscomplicatedhistoryofchangesslowlyeffected，totheviewsofthosegeologistswhobelievethatthisgreatmountain-chainwasformedinlatetimesbyasingleblow。Ihaveendeavouredelsewheretoshow，thattheexcessivelydisturbedconditionofthestrataintheCordillera，sofarfromindicatingsingleperiodsofextremeviolence，presentsinsuperabledifficulties，exceptontheadmissionthatthemassesofonceliquifiedrocksoftheaxeswererepeatedlyinjectedwithintervalssufficientlylongfortheirsuccessivecoolingandconsolidation。

(“GeologicalTransactions“volume5page626。)Finally，ifwelooktotheanalogiesdrawnfromthechangesnowinprogressintheearth’scrust，whethertothemannerinwhichvolcanicmatteriserupted，ortothemannerinwhichthelandishistoricallyknowntohaverisenandsunk：oragain，ifwelooktothevastamountofdenudationwhicheverypartoftheCordillerahasobviouslysuffered，thechangesthroughwhichithasbeenbroughtintoitspresentcondition，willappearneithertohavebeentooslowlyeffected，nortohavebeentoocomplicated。

NOTE。

As，bothinFranceandEngland，translationsofapassageinProfessorEhrenberg’sMemoir，oftenreferredtointheFourthChapterofthisvolume，haveappeared，implyingthatProfessorEhrenbergbelieves，fromthecharacteroftheinfusoria，thatthePampeanformationwasdepositedbyasea-debaclerushingovertheland，Imaystate，ontheauthorityofalettertome，thatthesetranslationsareincorrect。Thefollowingisthepassageinquestion：——

“DurchBeachtungdermikroscopischenFormenhatsichnunfeststellenlassen，dasdieMastodonten-LageramLaPlataunddieKnochen-LageramMonteHermoso，whowiediederRiesen-GurtelthiereindenDunenhugelnbeiBahiaBlanca，beidesinPatagonien，unverandertebrakischeSusswasserbildungensind，dieeinstwohlsammtlichzumoberstenFluthgebiethedesMeeresimtieferenFestlandegehorten。”——“Monatsberichtenderkonigl。Akad。etc。”zuBerlinvomApril1845。

INDEX。

Abich，onanewvarietyoffeldspar。

Abrolhosislands。

AbsenceofrecentformationsontheS。Americancoasts。

AguerrosonelevationofImperial。

Albite，constituentmineralinandesite——

inrocksofTierradelFuego——

inporphyries——

crystalsof，withorthite。

Alison，Mr。onelevationofValparaiso。

Alumina，sulphateof。

AmmonitesfromConcepcion。

Amolanas，Las。

Amygdaloid，curiousvarietiesof。

AmygdaloidsoftheUspallatarange——

ofCopiapo。

AndesiteofChile——

inthevalleyofMaypu——

oftheCumbrepass——

oftheUspallatarange——

ofLosHornos——

ofCopiapo。

Anhydrite，concretionsof。

Araucaria，silicifiedwoodof。

Arica，elevationof。

Arqueros，minesof。

Ascension，gypsumdepositedon——

laminatedvolcanicrocksof。

Augiteinfragments，ingneiss——

withalbite，inlava。

Austin，Mr。R。A。C。onbentcleavagelamina。

Austin，Captain，onsea-bottom。

Australia，foliatedrocksof。

Azaralabiata，bedsof，atSanPedro。

Baculitesvagina。

BahiaBlanca，elevationof——

formationsnear——

characteroflivingshellsof。

Bahia(Brazil)，elevationnear——

crystallinerocksof。

Ballard，M。ontheprecipitationofsulphateofsoda。

BandaOriental，tertiaryformationsof——

crystallinerocksof。

Barnaclesabovesea-level——

adheringtoupraisedshells。

BasaltofS。Cruz——

streamsof，inthePortillorange——

intheUspallatarange。

BasinchainsofChile。

BeagleChannel。

Beaumont，Eliede，oninclinationoflava-streams——

onviscidquartz-rocks。

Beech-tree，leavesoffossil。

Beechey，Captain，onsea-bottom。

Belcher，Lieutenant，onelevatedshellsfromConcepcion。

BellaVista，plainof。

Benza，Dr。ondecomposedgranite。

Bettington，Mr。onquadrupedstransportedbyrivers。

Blake，Mr。onthedecayofelevatedshellsnearIquique——

onnitrateofsoda。

Bole。

Bollaert，Mr。onminesofIquique。

Bones，silicified——

fossil，freshconditionof。

BottomofseaoffPatagonia。

Bougainville，onelevationoftheFalklandislands。

BoulderformationofS。Cruz——

ofFalklandislands——

anteriortocertainextinctquadrupeds——

ofTierradelFuego。

BouldersintheCordillera——

transportedbyearthquake-waves——

infine-grainedtertiarydeposits。

Brande，Mr。onamineralspring。

Bravais，M。onelevationofScandinavia。

Brazil，elevationof——

crystallinerocksof。

Broderip，Mr。onelevatedshellsfromConcepcion。

Brown，Mr。R。onsilicifiedwoodofUspallatarange。

Brown，onsilicifiedwood。

Bucalema，elevatedshellsnear。

Buch，Von，oncleavage——

oncretaceousfossilsoftheCordillera——

onthesulphureousvolcanoesofJava。

BuenosAyres。

Burchell，Mr。onelevatedshellsofBrazil。

Byron，onelevatedshells。

Cachapual，bouldersinvalleyof。

Caldcleugh，Mr。onelevationofCoquimbo——

onrocksofthePortillorange。

Callao，elevationnear——

oldtownof。

CapeofGoodHope，metamorphicrocksof。

Carchariasmegalodon。

Carpenter，Dr。onmicroscopicorganisms。

Castro(Chiloe)，bedsnear。

CauquenesBaths，bouldersnear——

pebblesinporphyrynear——

volcanicformationnear——

stratificationnear。

Cavesabovesea-level。

Cervuspumilus，fossil-hornsof。

Chevalier，M。onelevationnearLima。

Chile，structureofcountrybetweentheCordilleraandthePacific——

tertiaryformationsof——

crystallinerocksin——

central，geologyof——

northern，geologyof。

Chiloe，graveloncoast——

elevationof——

tertiaryformationof——

crystallinerocksof。

Chlorite-schist，nearM。Video。

Chonosarchipelago，tertiaryformationsof——

crystallinerocksof。

Chupat，Rio，scoriaetransportedby。

Claro，Rio，fossiliferousbedsof。

Clay-shaleofLosHornos。

Clay-slate，formationof，TierradelFuego——

ofConcepcion——

feldspathic，ofChile——

oftheUspallatarange——

blacksiliceous，bandof，inporphyriticformationsofChile。

Claystoneporphyry，formationof，inChile——

originof——

eruptivesourcesof。

Cleavage，definitionof——

atBahia——

RiodeJaneiro——

Maldonado——

MonteVideo——

S。Guitru-gueyu——

FalklandI——

TierradelFuego——

ChonosI——

Chiloe——

Concepcion——

Chile——

discussionon。

Cleavage-laminaesuperficiallybent。

Cliffs，formationof。

Climate，latechangesin——

ofChileduringtertiaryperiod。

CoalofConcepcion——

S。Lorenzo。

Coast-denudationofSt。Helena。

Cobija，elevationof。

Colombia，cretaceousformationof。

ColoniadelSacramiento，elevationof——

PampeanformationnearColorado，Rio，gravelof——

sand-dunesof——

Pampeanformationnear。

Combarbala。

Concepcion，elevationof——

depositsof——

crystallinerocksof。

Conchalee，gravel-terracesof。

Concretionsofgypsum，atIquique——

insandstoneatS。Cruz——

intufaceoustuffofChiloe——

ingneiss——

inclaystone-porphyryatPortDesire——

ingneissatValparaiso——

inmetamorphicrocks——

ofanhydrite——

relationsof，toveins。

ConglomerateclaystoneofChile——

ofTenuyan——

oftheCumbrePass——

ofRioClaro——

ofCopiapo。

Cook，Captain，onformofsea-bottom。

Copiapo，elevationof——

tertiaryformationsof——

secondaryformationsof。

Copper，sulphateof——

native，atArqueros——

minesof，atPanuncillo——

veins，distributionof。

Coquimbo，elevationandterracesof——

tertiaryformationsof——

secondaryformationsof。

Corallineslivingonpebbles。

Cordillera，valleysborderedbygravelfringes——

basalstrataof——

fossilsof——

elevationof——

gypseousformationsof——

claystone-porphyriesof——

andesiticrocksof——

volcanoesof。

Coste，M。onelevationofLemus。

Coyinlet，tertiaryformationof。

CrassatellaLyellii。

Cruickshanks，Mr。onelevationnearLima。

Crystalsoffeldspar，gradualformationof，atPortDesire。

Cumbre，Passof，inCordillera。

Cuming，Mr。onhabitsoftheMesodesma——

onrangeoflivingshellsonwestcoast。

Dana，Mr。onfoliatedrocks——

onamygdaloids。

Darwin，Mount。

D’Aubuisson，onconcretions——

onfoliatedrocks。

Decay，gradual，ofupraisedshells。

Decompositionofgraniterocks。

DelaBeche，SirH。histheoreticalresearchesingeology——

ontheactionofsaltoncalcareousrocks——

onbentcleavage-laminae。

DenudationoncoastofPatagonia——

greatpowersof——

ofthePortillorange。

Deposits，saline。

Despoblado，valleyof。

Detritus，natureof，inCordillera。

Devonshire，bentcleavagein。

Dikes，ingneissofBrazil——

nearRiodeJaneiro——

pseudo，atPortDesire——

inTierradelFuego——

inChonosarchipelago，containingquartz——

nearConcepcion，withquartz——

granitic-porphyritic，atValparaiso——

rarelyvesicularinCordillera——

absentinthecentralridgesofthePortillopass——

ofthePortillorange，withgrainsofquartz——

intersectingeachotheroften——

numerousatCopiapo。

Domeyko，M。onthesilverminesofCoquimbo。

onthefossilsofCoquimbo。

D’Orbigny，M。A。onupraisedshellsofMonteVideo——

onelevatedshellsatSt。Pedro——

onelevatedshellsnearB。Ayres——

onelevationofS。Blas——

onthesuddenelevationofLaPlata——

onelevatedshellsnearCobija——

onelevatedshellsnearArica——

ontheclimateofPeru——

onsaltdepositsofCobija——

oncrystalsofgypsuminsalt-lakes——

onabsenceofgypsuminthePampeanformation——

onfossilremainsfromBahiaBlanca——

onfossilremainsfromthebanksoftheParana——

onthegeologyofSt。Fe——

ontheageofPampeanformation——

ontheMastodonAndium——

onthegeologyoftheRioNegro——

onthecharacterofthePatagonianfossils——

onfossilsfromConcepcion——

fromCoquimbo——

fromPayta——

onfossiltertiaryshellsofChile——

oncretaceousfossilsofTierradelFuego——

fromtheCordilleraofChile。

Earth，marineoriginof。

Earthenware，fossil。

Earthquake，effectof，atS。Maria——

elevationduring，atLemus——

of1822，atValparaiso——

effectsof，inshatteringsurface——

fissuresmadeby——

probableeffectsoncleavage。

EarthquakesinPampas。

Earthquake-waves，powerof，inthrowingupshells——

effectsof，nearLima——

powerof，intransportingboulders。

Edmonston，Mr。ondepthsatwhichshellsliveatValparaiso。

Ehrenberg，Professor，oninfusoriainthePampeanformation——

oninfusoriainthePatagonianformation。

ElevationofLaPlata——

Brazil——

BahiaBlanca——

SanBlas——

Patagonia——

TierradelFuego——

Falklandislands——

Pampas——

Chonosarchipelago——

Chiloe——

Chile——

Valparaiso——

Coquimbo——

Guasco——

Iquique——

Cobija——

Lima——

sudden，atS。Maria——

atLemus——

insensible，atChiloe——

atValparaiso——

atCoquimbo——

axesof，atChiloe——

atP。Rumena——

atConcepcion——

unfavourablefortheaccumulationofpermanentdeposits——

linesof，paralleltocleavageandfoliation——

linesof，obliquetofoliation——

areasof，causinglinesofelevationandcleavage——

linesof，intheCordillera——

slow，inthePortillorange——

twoperiodsof，inCordilleraofCentralChile——

oftheUspallatarange——

twoperiodsof，inCumbrePass——

horizontal，intheCordilleraofCopiapo——

axesof，coincidentwithvolcanicorifices——

oftheCordillera，summaryon。

Elliott，Captain，onhumanremains。

Ensenada，elevatedshellsof。

EntreRios，geologyof。

Equuscurvidens。

EpidoteinTierradelFuego——

ingneiss——

frequentinChile——

intheUspallatarange——

inporphyryofCoquimbo。

Erman，M。onandesite。

Escarpments，recent，ofPatagonia。

Extinctionoffossilmammifers。

Falklandislands，elevationof——

pebblesoncoast——

geologyof。

Falkner，onsalineincrustations。

Faults，great，inCordillera。

Feldspar，earthy，metamorphosisof，atPortDesire——

albitic——

crystalsof，withalbite——

orthitic，inconglomerateofTenuyan——

ingraniteofPortillorange——

inporphyriesintheCumbrePass。

Feuilleeonsea-levelatCoquimbo。

Fissures，relationsof，toconcretions——

upfilled，atPortDesire——

inclay-slate。

Fitton，Dr。onthegeologyofTierradelFuego。

Fitzroy，Captain，ontheelevationoftheFalklandislands——

ontheelevationofConcepcion。

Foliation，definitionof——

ofrocksatBahia——

RiodeJaneiro——

Maldonado——

MonteVideo——

S。Guitru-gueyu——

FalklandI——

TierradelFuego——

Chonosarchipelago——

Chiloe——

Concepcion——

Chile——

discussionon。

Forbes，ProfessorE。oncretaceousfossilsofConcepcion——

oncretaceousfossilsandsubsidenceinCumbrePass——

onfossilsfromGuasco——

fromCoquimbo——

fromCopiapo——

ondepthsatwhichshellslive。

Formation，Pampean——

areaof——

estuaryorigin——

tertiaryofEntreRios——

ofBandaOriental——

volcanic，inBandaOriental——

ofPatagonia——

summaryon——

tertiaryofTierradelFuego——

oftheChonosarchipelago——

ofChiloe——

ofChile——

ofConcepcion——

ofNavidad——

ofCoquimbo——

ofPeru——

subsidenceduring——

volcanic，ofTresMontes——

ofChiloe——

old，nearMaldonado——

withlaminarstructure——

ancient，inTierradelFuego——

recent，absentonS。Americancoast——

metamorphic，ofclaystone-porphyryofPatagonia——

foliationof——

plutonic，withlaminarstructure——

palaeozoic，oftheFalklandI——

claystone，atConcepcion——

Jurassic，ofCordillera——

Neocomian，ofthePortilloPass——

volcanic，ofCumbrePass——

gypseous，ofLosHornos——

ofCoquimbo——

ofGuasco——

ofCopiapo——

ofIquique——

cretaceo-oolitic，ofCoquimbo——

ofGuasco——

ofCopiapo——

ofIquique。

Fossils，Neocomian，ofPortilloPass——

ofCumbrePass——

secondary，ofCoquimbo——

ofGuasco——

ofCopiapo——

ofIquique——

palaeozoic，fromtheFalklands。

Fragmentsofhornblende-rockingneiss——

ofgneissingneiss。

Freyer，Lieutenant，onelevatedshellsofArica。

Frezieronsea-levelatCoquimbo。

Galapagosarchipelago，pseudo-dikesof。

Gallegos，Port，tertiaryformationof。

Garnetsingneiss——

inmica-slate——

atPanuncillo。

Gardichaud，M。ongranitesofBrazil。

Gay，M。onelevatedshells——

onbouldersintheCordillera——

onfossilsfromCordilleraofCoquimbo。

Gill，Mr。onbrickworktransportedbyanearthquake-wave。

Gillies，Dr。onheightsintheCordillera——

onextensionofthePortillorange。

GlenRoy，parallelroadsof——

slopingterracesof。

Gneiss，nearBahia——

ofRiodeJaneiro——

decompositionof。

Gold，distributionof。

Gorodona，formationsnear。

Granite，axisofoblique，tofoliation——

andesitic——

ofPortillorange——

veinsof，quartzose——

pebbleof，inporphyriticconglomerate——

conglomerate。

GrauwackeofUspallatarange。

Gravelatbottomofsea——

formationof，inPatagonia——

meansoftransportationof——

strataof，inclined。

Gravel-terracesinCordillera。

Greenough，Mr。onquartzveins。

Greenstone，resultingfrommetamorphosehornblende-rock——

ofTierradelFuego——

onthesummitoftheCampanaofQuillota——

porphyry——

relationof，toclay-slate。

Gryphaeaorientalis。

Guasco，elevationof——

secondaryformationof。

Guitru-gueyu，Sierra。

Guyana，gneissicrocksof。

Gypsum，nodulesof，ingravelatRioNegro——

depositedfromsea-water——

depositsof，atIquique——

crystalsof，insaltlakes——

inPampeanformation——

intertiaryformationofPatagonia——

greatformationof，inthePortilloPass——

intheCumbrePass——

nearLosHornos——

atCoquimbo——

atCopiapo——

nearIquique——

ofSanLorenzo。

Hall，Captain，onterracesatCoquimbo。

Hamilton，Mr。onelevationnearTacna。

Harlan，Dr。onhumanremains。

Hayes，Mr。A。onnitrateofsoda。

Henslow，Professor，onconcretions。

Herbert，Captain，onvalleysintheHimalaya。

HerraduraBay，elevatedshellsof——

tertiaryformationsof。

Himalaya，valleysin。

HippuritesChilensis。

Hitchcock，Professor，ondikes。

Honestones，pseudo，ofCoquimbo——

ofCopiapo。

Hooker，Dr。J。D。onfossilbeech-leaves。

Hopkins，Mr。onaxesofelevationobliquetofoliation——

onoriginoflinesofelevation。

Hornblende-rock，fragmentsof，ingneiss。

Hornblende-schist，nearM。Video。

Hornos，Los，sectionnear。

Hornstone，dikeof。

Horse，fossiltoothof。

Huafoisland——

subsidenceat。

Huantajaya，minesof。

Humboldt，onsalineincrustations——

onfoliationsofgneiss——

onconcretionsingneiss。

Icebergs，actiononcleavage。

Illapel，sectionnear。

Imperial，bedsofshellsnear。

Incrustations，saline。

InfusoriainPampeanformation——

inPatagonianformation。

Iodine，saltsof。

Iquique，elevationof——

saliferousdepositsof——

cretaceo-ooliticformationof。

Iron，oxideof，inlavas——

insedimentarybeds——

tendencyin，toproducehollowconcretions——

sulphateof。

Isabelle，M。onvolcanicrocksofBandaOriental。

Jointsinclay-slate。

Jukes，Mr。oncleavageinNewfoundland。

Kamtschatka，andesiteof。

Kane，Dr。ontheproductionofcarbonateofsoda。

KingGeorge’ssound，calcareousbedsof。

Lakes，originof——

fresh-water，nearsaltlakes。

Lava，basaltic，ofS。Cruz——

claystone-porphyry，atChiloe——

ancientsubmarine——

basaltic，ofthePortillorange——

feldspathic，oftheCumbrePass——

submarine，oftheUspallatarange——

basaltic，oftheUspallatarange——

submarine，ofCoquimbo——

ofCopiapo。

Lemusisland。

Lemuyislet。

LigniteofChiloe——

ofConcepcion。

Lima，elevationof。

Lime，muriateof。

LimestoneofCumbrePass——

ofCoquimbo——

ofCopiapo。

LundandClausenonremainsofcavesinBrazil。

Lund，M。ongranitesofBrazil。

Lyell，M。onupraisedshellsretainingtheircolours——

onterracesatCoquimbo——

onelevationnearLima——

onfossilhorse’stooth——

ontheboulder-formationbeinganteriortotheextinctionofNorthAmericanmammifers——

onquadrupedswasheddownbyfloods——

onageofAmericanfossilmammifers——

onchangesofclimate——

ondenudation——

onfoliation。

MacCulloch，Dr。onconcretions——

onbedsofmarble。

Maclaren，Mr。letterto，oncoral-formations。

MacraucheniaPatachonica。

Madeira，subsidenceof。

Magellan，Strait，elevationnear，of。

Magnesia，sulphateof，inveins。

Malcolmson，Dr。ontreescarriedouttosea。

Maldonado，elevationof——

Pampeanformationof——

crystallinerocksof。

Mammalia，fossil，ofBahiaBlanca——

nearSt。Fe——

ofBandaOriental——

ofSt。Julian——

atPortGallegos——

washeddownbyfloods——

numberofremainsof，andrangeof，inPampas。

Man，skeletonsof(Brazil)——

remainsof，nearLima——

Indian，antiquityof。

Marble，bedsof。

Maricongo，ravineof。

Marsden，onelevationofSumatra。

MastodonAndium，remainsof——

rangeof。

Maypu，Rio，mouthof，withupraisedshells——

gravelfringesof——

debouchementfromtheCordillera。

Megalonyx，rangeof。

Megatherium，rangeof。

Miers，Mr。onelevatedshells——

ontheheightoftheUspallataplain。

Minas，Las。

MochaIsland，elevationof——

tertiaryformof——

subsidenceat。

Molina，onagreatflood。

MonteHermoso，elevationof——

fossilsof。

MonteVideo，elevationof——

Pampeanformationof——

crystallinerocksof。

MorrisandSharpe，Messrs。onthepalaeozoicfossilsoftheFalklands。

Mud，Pampean——

longdepositedonthesamearea。

Murchison，SirR。oncleavage——

onwavestransportinggravel——

onoriginofsaltformations——

ontherelationsofmetalliferousveinsandintrusiverocks——

ontheabsenceofgraniteintheUral。

Nautilusd’Orbignyanus。

Navidad，tertiaryformationsof，subsidenceof。

Negro，Rio，pumiceofpebblesof——

gravelof——

saltlakesof——

tertiarystrataof。

NorthAmerica，fossilremainsof。

NorthWales，slopingterracesabsentin——

bentcleavageof。

NeuvoGulf，plainsof——

tertiaryformationof。

Owen，Professor，onfossilmammiferousremains。

Palmer，Mr。ontransportationofgravel。

Pampas，elevationof——

earthquakesof——

formationof——

localitiesinwhichfossilmammifershavebeenfound。

Panuncillo，minesof。

Parana，Rio，onsalineincrustations——

Pampeanformationsnear——

ontheS。Tandil。

Parish，SirW。onelevatedshellsnearBuenosAyres——

onearthquakesinthePampas——

onfresh-waternearsaltlakes——

onoriginofPampeanformation。

Patagonia，elevationandplainsof——

denudationof——

gravel-formationof——

sea-cliffsof——

subsidenceduringtertiaryperiod——

crystallinerocksof。

Payta，tertiaryformationsof。

Pebblesofpumice——

decreaseinsizeonthecoastofPatagonia——

meansoftransportation——

encrustedwithlivingcorallines——

distributionof，attheeasternfootofCordillera——

dispersalof，inthePampas——

zonedwithcolour。

Pentland，Mr。onheightsintheCordillera——

onfossilsoftheCordillera。

Pernambuco。

Peru，tertiaryformationsof。

Peuquenes，Passof，intheCordillera——

ridgeof。

Pholas，elevatedshellsof。

PitchstoneofChiloe——

ofPortDesire——

nearCauquenes——

layersof，intheUspallatarange——

ofLosHornos——

ofCoquimbo。

PlainsofPatagonia——

ofChiloe——

ofChile——

ofUspallata——

oneasternfootofCordillera——

ofIquique。

Plata，La，elevationof——

tertiaryformationof——

crystallinerocksof。

Playfair，Professor，onthetransportationofgravel。

Pluclaro，axisof。

Pondicherry，fossilsof。

PorcelainrocksofPortDesire——

oftheUspallatarange。

Porphyry，pebblesof，strewedoverPatagonia。

Porphyry，claystone，ofChiloe，——ofPatagonia——

ofChile——

greenstone，ofChile——

doublycolumnar——

claystone，rare，ontheeasternsideofthePortilloPass——

brick-redandorthitic，ofCumbrePass——

intrusive，repeatedlyinjected——

claystoneoftheUspallatarange——

ofCopiapo——

eruptivesourcesof。

PortDesire，elevationandplainsof——

tertiaryformationof——

porphyriesof。

PortilloPassintheCordillera。

Portillochain——

comparedwiththatoftheUspallata。

Prefilorsea-wallofValparaiso。

PuentedelInca，sectionof。

Pumice，pebblesof——

conglomerateofR。Negro——

hillsof，intheCordillera。

PuntaAlta，elevationof——

bedsof。

Quartz-rockoftheS。Ventana——

C。Blanco——

Falklandislands——

Portillorange——

viscidityof——

veinsof，nearMonteVideo——

indikeofgreenstone——

grainsof，inmicaslate——

indikes——

veinsof，relationstocleavage。

Quillota，Campanaof。

Quintero，elevationof。

Quiriquina，elevationof——

depositsof。

Rancagua，plainof。

Rapel，R。elevationnear。

Reeks，Mr。T。hisanalysisofdecomposedshells——

hisanalysisofsalts。

Remains，human。

RiodeJaneiro，elevationnear——

crystallinerocksof。

Rivers，smallpoweroftransportingpebbles——

smallpowerof，informingvalleys——

drainageof，intheCordillera。

Roads，parallel，ofGlenRoy。

Rocks，volcanic，ofBandaOriental——

TresMontes——

Chiloe——

TierradelFuego——

withlaminarstructure。

Rodents，fossil，remainsof。

Rogers，Professor，addresstoAssociationofAmericanGeologists。

Rose，ProfessorG。onsulphateofironatCopiapo。

S。Blas，elevationof。

S。Cruz，elevationandplainsof——

valleyof——

natureofgravelinvalleyof——

boulderformationof——

tertiaryformationof——

subsidenceat。

S。FeBajada，formationsof。

S。George’sbay，plainsof。

S。Helenaisland，sea-cliffs，andsubsidenceof。

S。Josef，elevationof——

tertiaryformationof。

S。Juan，elevationnear。

S。Julian，elevationandplainsof——

saltlakeof——

earthydepositwithmammiferousremains——

tertiaryformationsof——

subsidenceat。

S。Lorenzo，elevationof——

oldsaltformationof。

S。Mary，islandof，elevationof。

S。Pedro，elevationof。

Salado，R。elevatedshellsof——

Pampeanformationof。

Salines。

Salt，withupraisedshell——

lakesof——

purityof，insaltlakes——

deliquescent，necessaryforthepreservationofmeat——

ancientformationof，atIquique——

atS。Lorenzo——

strataof，originof。

Salts，superficialdepositsof。

Sand-dunesoftheUruguay——

ofthePampas——

nearBahiaBlanca——

oftheColorado——

ofS。Cruz——

ofArica。

Sarmiento，Mount。

Schmidtmeyeronauriferousdetritus。

Schomburghk，SirR。onsea-bottom——

ontherocksofGuyana。

Scotland，slopingterracesof。

Sea，natureofbottomof，offPatagonia——

powerof，informingvalleys。

Seacliffs，formationof。

Seale，Mr。modelofSt。Helena。

SebastianBay，tertiaryformationof。

Sedgwick，Professor，oncleavage。

SerpentineofCopiapo。

Serpulae，onupraisedrocks。

Shale-rock，ofthePortilloPass——

ofCopiapo。

Shells，upraisedstateof，inPatagonia——

elevated，toosmallforhumanfood——

transportedfarinland，forfood——

upraised，proportionalnumbersvarying——

gradualdecayof——

absentonhighplainsofChile——

nearBahiaBlanca——

preservedinconcretions——

livingandfossilrangeof，onwestcoast——

living，differentontheeastandwestcoast。

ShingleofPatagonia。

Siau，M。onsea-bottom。

SilverminesofArqueros——

ofChanuncillo——

ofIquique——

distributionof。

Slip，great，atS。Cruz。

Smith，Mr。ofJordanHill，onupraisedshellsretainingtheircolours——

onMadeira——

onelevatedseaweed——

oninclinedgravelbeds。

Soda，nitrateof——

sulphateof，nearBahiaBlanca——

carbonateof。

SoundingsoffPatagonia——

inTierradelFuego。

Spirifers。

SpixandMartiusonBrazil。

Sprengelontheproductionofcarbonateofsoda。

Springs，mineral，intheCumbrePass。

Stratificationofsandstoneinmetamorphicrocks——

ofclay-slateinTierradelFuego——

oftheCordilleraofCentralChile——

littledisturbedinCumbrePass——

disturbanceof，nearCopiapo。

StreamsoflavaatS。Cruz，inclinationof——

inthePortillorange。

Stringofcottonwithfossil-shells。

Struthiolariaornata。

Studer，M。onmetamorphicrocks。

Subsidenceduringformationofsea-cliffs——

nearLima——

probable，duringPampeanformation——

necessaryfortheaccumulationofpermanentdeposits——

duringthetertiaryformationsofChileandPatagonia——

probableduringtheNeocomianformationofthePortilloPass——

probableduringtheformationofconglomerateofTenuyan——

duringtheNeocomianformationoftheCumbrePass——

oftheUspallatarange——

great，atCopiapo——

duringtheformationoftheCordillera。

Sulphur，volcanicexhalationsof。

Sumatra，promontoriesof。

Summaryontherecentelevatorymovements——

onthePampeanformation——

onthetertiaryformationsofPatagoniaandChile——

ontheChileanCordillera——

onthecretaceo-ooliticformation——

onthesubsidencesoftheCordillera——

ontheelevationoftheCordillera。

Tacna，elevationof。

Tampico，elevatedshellsnear。

Tandil，crystallinerocksof。

Tapalguen，Pampeanformationof——

crystallinerocksof。

Taylor，Mr。oncopperveinsofCuba。

TemperatureofChileduringthetertiaryperiod。

Tension，linesof，originof，axesofelevationandofcleavage。

TenuyPoint，singularsectionof。

Tenuyan，valleyof。

TerracesofthevalleyofS。Cruz——

ofequableheightsthroughoutPatagonia——

ofPatagonia，formationof——

ofChiloe——

atConchalee——

ofCoquimbo——

nothorizontalatCoquimbo——

ofGuasco——

ofS。Lorenzo——

ofgravelwithintheCordillera。

TheoriesontheoriginofthePampeanformation。

TierraAmarilla。

TierradelFuego，formofsea-bottom——

tertiaryformationsof——

clay-slateformationof——

cretaceousformationof——

crystallinerocksof——

cleavageofclay-slate。

Toscarock。

TrachyteofChiloe——

ofPortDesire——

intheCordillera。

Traditionsofpromontorieshavingbeenislands——

onchangesoflevelnearLima。

TreesburiedinplainofIquique——

silicified，vertical，oftheUspallatarange。

TresMontes，elevationof——

volcanicrocksof。

Trigonoceliainsolita。

TristanArroyo，elevatedshellsof。

Tschudi，Mr。onsubsidencenearLima。

Tuff，calcareous，atCoquimbo——

onbasin-plainnearSt。Jago——

structureof，inPampas——

originof，inPampas——

pumiceous，ofR。Negro——

NuevoGulf——

PortDesire——

S。Cruz——

Patagonia，summaryonChiloe——

formationof，inPortillochain——

greatdepositof，atCopiapo。

Tuffs，volcanic，metamorphic，ofUspallata——

ofCoquimbo。

Ulloa，onraininPeru——

onelevationnearLima。

Uruguay，Rio，elevationofcountrynear。

Uspallata，plainof——

passof——

rangeof——

concludingremarkson。

Valdivia，tertiarybedsof——

mica-slateof。

ValleyofS。Cruz，structureof——

Coquimbo——

Guasco，structureof——

Copiapo，structureof——

S。Cruz，tertiaryformationsof——

Coquimbo，geologyof——

Guasco，secondaryformationsof——

Copiapo，secondaryformationsof——

Despoblado。

ValleysintheCordilleraborderedbygravelfringes——

formationof——

intheCordillera。

Valparaiso，elevationof——

gneissof。

VeinofquartznearMonteVideo——

inmica-slate——

relationsof，tocleavage——

inatrapdike——

ofgranite，quartzose——

remarkable，ingneiss，nearValparaiso。

Veins，relationsof，toconcretions——

metalliferous，oftheUspallatarange——

metalliferous，discussionon。

Venezuela，gneissicrocksof。

Ventana，Sierra，Pampeanformationnear——

quartz-rockof。

VillaVincencioPass。

Volcan，Rio，mouthof——

fossilsof。

VolcanoesoftheCordillera——

absent，exceptnearbodiesofwater——

ancientsubmarine，inCordillera——

actionof，inrelationtochangesoflevel——

longactionof，intheCordillera。

Waferonelevatedshells。

Wavescausedbyearthquakes，powerof，intransportingboulders——

powerof，inthrowingupshells。

Weaver，Mr。onelevatedshells。

White，Martin。onsea-bottom。

Wood，silicified，ofEntreRios——

S。Cruz——

Chiloe——

Uspallatarange——

LosHornos——

Copiapo。

Yeso，Rio，andplainof。

YpunIsland，tertiaryformationof。

Zeagonite。

End