投诉 阅读记录

第1章

byThomasH。Huxley1。UEBERDIEDARWIN’SCHESCHPFUNGSTHEORIE;EINVORTRAG,VONA。K

LLIKER。Leipzig,1864。

2。EXAMINATIONDULIVREDEM。DARWINSURL’ORIGINEDESESPECES。PARP。

FLOURENS。Paris,1864。

InthecourseofthepresentyearseveralforeigncommentariesuponMr。

Darwin’sgreatworkhavemadetheirappearance。Thosewhohaveperusedthatremarkablechapterofthe’AntiquityofMan,’inwhichSirCharlesLyelldrawsaparallelbetweenthedevelopmentofspeciesandthatoflanguages,willbegladtohearthatoneofthemosteminentphilologersofGermany,ProfessorSchleicher,has,independently,publishedamostinstructiveandphilosophicalpamphlet(anexcellentnoticeofwhichistobefoundinthe’Reader’,forFebruary27thofthisyear)supportingsimilarviewswithalltheweightofhisspecialknowledgeandestablishedauthorityasalinguist。ProfessorHaeckel,towhomSchleicheraddresseshimself,previouslytookoccasion,inhissplendidmonographonthe’Radiolaria’*,toexpresshishighappreciationof,andgeneralconcordancewith,Mr。Darwin’sviews。

[footnote]*’DieRadiolarien:eineMonographie’,p。231。

Butthemostelaboratecriticismsofthe’OriginofSpecies’whichhaveappearedaretwoworksofverywidelydifferentmerit,theonebyProfessorKolliker,thewell—knownanatomistandhistologistofWurzburg;theotherbyM。Flourens,PerpetualSecretaryoftheFrenchAcademyofSciences。

ProfessorKolliker’scriticalessay’UpontheDarwinianTheory’is,likeallthatproceedsfromthepenofthatthoughtfulandaccomplishedwriter,worthyofthemostcarefulconsideration。ItcomprisesabriefbutclearsketchofDarwin’sviews,followedbyanenumerationoftheleadingdifficultiesinthewayoftheiracceptance;difficultieswhichwouldappeartobeinsurmountabletoProfessorKolliker,inasmuchasheproposestoreplaceMr。Darwin’sTheorybyonewhichhetermsthe’TheoryofHeterogeneousGeneration。’Weshallproceedtoconsiderfirstthedestructive,andsecondly,theconstructiveportionoftheessay。

WeregrettofindourselvescompelledtodissentverywidelyfrommanyofProfessorKolliker’sremarks;andfromnonemorethoroughlythanfromthoseinwhichheseekstodefinewhatwemaytermthephilosophicalpositionofDarwinism。

"Darwin,"saysProfessorKolliker,"is,inthefullestsenseoftheword,aTeleologist。Hesaysquitedistinctly(FirstEdition,pp。199,200)thateveryparticularinthestructureofananimalhasbeencreatedforitsbenefit,andheregardsthewholeseriesofanimalformsonlyfromthispointofview。"

Andagain:

"7。TheteleologicalgeneralconceptionadoptedbyDarwinisamistakenone。

"Varietiesariseirrespectivelyofthenotionofpurpose,orofutility,accordingtogenerallawsofNature,andmaybeeitheruseful,orhurtful,orindifferent。

"Theassumptionthatanorganismexistsonlyonaccountofsomedefiniteendinview,andrepresentssomethingmorethantheincorporationofageneralidea,orlaw,impliesaone—sidedconceptionoftheuniverse。

Assuredly,everyorganhas,andeveryorganismfulfils,itsend,butitspurposeisnottheconditionofitsexistence。Everyorganismisalsosufficientlyperfectforthepurposeitserves,andinthat,atleast,itisuselesstoseekforacauseofitsimprovement。"

Itissingularhowdifferentlyoneandthesamebookwillimpressdifferentminds。Thatwhichstruckthepresentwritermostforciblyonhisfirstperusalofthe’OriginofSpecies’wastheconvictionthatTeleology,ascommonlyunderstood,hadreceiveditsdeathblowatMr。

Darwin’shands。Fortheteleologicalargumentrunsthus:anorganororganism(A)ispreciselyfittedtoperformafunctionorpurpose(B);

thereforeitwasspeciallyconstructedtoperformthatfunction。InPaley’sfamousillustration,theadaptationofallthepartsofthewatchtothefunction,orpurpose,ofshowingthetime,isheldtobeevidencethatthewatchwasspeciallycontrivedtothatend;ontheground,thattheonlycauseweknowof,competenttoproducesuchaneffectasawatchwhichshallkeeptime,isacontrivingintelligenceadaptingthemeansdirectlytothatend。

Suppose,however,thatanyonehadbeenabletoshowthatthewatchhadnotbeenmadedirectlybyanyperson,butthatitwastheresultofthemodificationofanotherwatchwhichkepttimebutpoorly;andthatthisagainhadproceededfromastructurewhichcouldhardlybecalledawatchatall——seeingthatithadnofiguresonthedialandthehandswererudimentary;andthatgoingbackandbackintimewecameatlasttoarevolvingbarrelastheearliesttraceablerudimentofthewholefabric。Andimaginethatithadbeenpossibletoshowthatallthesechangeshadresulted,first,fromatendencyofthestructuretovaryindefinitely;andsecondly,fromsomethinginthesurroundingworldwhichhelpedallvariationsinthedirectionofanaccuratetime—keeper,andcheckedallthoseinotherdirections;thenitisobviousthattheforceofPaley’sargumentwouldbegone。Foritwouldbedemonstratedthatanapparatusthoroughlywelladaptedtoaparticularpurposemightbetheresultofamethodoftrialanderrorworkedbyunintelligentagents,aswellasofthedirectapplicationofthemeansappropriatetothatend,byanintelligentagent。

Nowitappearstousthatwhatwehavehere,forillustration’ssake,supposedtobedonewiththewatch,isexactlywhattheestablishmentofDarwin’sTheorywilldofortheorganicworld。Forthenotionthateveryorganismhasbeencreatedasitisandlaunchedstraightatapurpose,Mr。Darwinsubstitutestheconceptionofsomethingwhichmayfairlybetermedamethodoftrialanderror。Organismsvaryincessantly;ofthesevariationsthefewmeetwithsurroundingconditionswhichsuitthemandthrive;themanyareunsuitedandbecomeextinguished。

AccordingtoTeleology,eachorganismislikeariflebulletfiredstraightatamark;accordingtoDarwin,organismsarelikegrapeshotofwhichonehitssomethingandtherestfallwide。

Fortheteleologistanorganismexistsbecauseitwasmadefortheconditionsinwhichitisfound;fortheDarwiniananorganismexistsbecause,outofmanyofitskind,itistheonlyonewhichhasbeenabletopersistintheconditionsinwhichitisfound。

Teleologyimpliesthattheorgansofeveryorganismareperfectandcannotbeimproved;theDarwiniantheorysimplyaffirmsthattheyworkwellenoughtoenabletheorganismtoholditsownagainstsuchcompetitorsasithasmetwith,butadmitsthepossibilityofindefiniteimprovement。Butanexamplemaybringintoclearerlighttheprofoundoppositionbetweentheordinaryteleological,andtheDarwinian,conception。

Catscatchmice,smallbirdsandthelike,verywell。Teleologytellsusthattheydosobecausetheywereexpresslyconstructedforsodoing——thattheyareperfectmousingapparatuses,soperfectandsodelicatelyadjustedthatnooneoftheirorganscouldbealtered,withoutthechangeinvolvingthealterationofalltherest。Darwinismaffirmsonthecontrary,thattherewasnoexpressconstructionconcernedinthematter;butthatamongthemultitudinousvariationsoftheFelinestock,manyofwhichdiedoutfromwantofpowertoresistopposinginfluences,some,thecats,werebetterfittedtocatchmicethanothers,whencetheythroveandpersisted,inproportiontotheadvantageovertheirfellowsthusofferedtothem。

Farfromimaginingthatcatsexist’inorder’tocatchmicewell,Darwinismsupposesthatcatsexist’because’theycatchmicewell——mousingbeingnottheend,butthecondition,oftheirexistence。Andifthecattypehaslongpersistedasweknowit,theinterpretationofthefactuponDarwinianprincipleswouldbe,notthatthecatshaveremainedinvariable,butthatsuchvarietiesashaveincessantlyoccurredhavebeen,onthewhole,lessfittedtogetonintheworldthantheexistingstock。

Ifweapprehendthespiritofthe’OriginofSpecies’rightly,then,nothingcanbemoreentirelyandabsolutelyopposedtoTeleology,asitiscommonlyunderstood,thantheDarwinianTheory。Sofarfrombeinga"Teleologistinthefullestsenseoftheword,"wewoulddenythatheisaTeleologistintheordinarysenseatall;andweshouldsaythat,apartfromhismeritsasanaturalist,hehasrenderedamostremarkableservicetophilosophicalthoughtbyenablingthestudentofNaturetorecognise,totheirfullestextent,thoseadaptationstopurposewhicharesostrikingintheorganicworld,andwhichTeleologyhasdonegoodserviceinkeepingbeforeourminds,withoutbeingfalsetothefundamentalprinciplesofascientificconceptionoftheuniverse。TheapparentlydivergingteachingsoftheTeleologistandoftheMorphologistarereconciledbytheDarwinianhypothesis。

Butleavingourownimpressionsofthe’OriginofSpecies,’andturningtothosepassagesespeciallycitedbyProfessorKolliker,wecannotadmitthattheybeartheinterpretationheputsuponthem。Darwin,ifwereadhimrightly,does’not’affirmthateverydetailinthestructureofananimalhasbeencreatedforitsbenefit。Hiswordsare(p。199):——

"Theforegoingremarksleadmetosayafewwordsontheprotestlatelymadebysomenaturalistsagainsttheutilitariandoctrinethateverydetailofstructurehasbeenproducedforthegoodofitspossessor。

Theybelievethatverymanystructureshavebeencreatedforbeautyintheeyesofman,orformerevariety。Thisdoctrine,iftrue,wouldbeabsolutelyfataltomytheory——yetIfullyadmitthatmanystructuresareofnodirectusetotheirpossessor。"

Andaftersundryillustrationsandqualifications,heconcludes(p。

200):——

"Henceeverydetailofstructureineverylivingcreature(makingsomelittleallowanceforthedirectactionofphysicalconditions)maybeviewedeitherashavingbeenofspecialusetosomeancestralform,orasbeingnowofspecialusetothedescendantsofthisform——eitherdirectly,orindirectly,throughthecomplexlawsofgrowth。"

Butitisonethingtosay,Darwinically,thateverydetailobservedinananimal’sstructureisofusetoit,orhasbeenofusetoitsancestors;andquiteanothertoaffirm,teleologically,thateverydetailofananimal’sstructurehasbeencreatedforitsbenefit。Ontheformerhypothesis,forexample,theteethofthefoetalBalaenahaveameaning;onthelatter,none。Sofarasweareaware,thereisnotaphraseinthe’OriginofSpecies’,inconsistentwithProfessorKolliker’sposition,that"varietiesariseirrespectivelyofthenotionofpurpose,orofutility,accordingtogenerallawsofNature,andmaybeeitheruseful,orhurtful,orindifferent。"

Onthecontrary,Mr。Darwinwrites(SummaryofChap。V。):——

"Ourignoranceofthelawsofvariationisprofound。Notinonecaseoutofahundredcanwepretendtoassignanyreasonwhythisorthatpartvariesmoreorlessfromthesamepartintheparents……Theexternalconditionsoflife,asclimateandfood,etc。,seemtohaveinducedsomeslightmodifications。Habit,inproducingconstitutionaldifferences,anduse,instrengthening,anddisuse,inweakeninganddiminishingorgans,seemtohavebeenmorepotentintheireffects。"

Andfinally,asiftopreventallpossiblemisconception,Mr。DarwinconcludeshisChapteronVariationwiththesepregnantwords:——

"Whateverthecausemaybeofeachslightdifferenceintheoffspringfromtheirparents——andacauseforeachmustexist——itisthesteadyaccumulation,throughnaturalselectionofsuchdifferences,whenbeneficialtotheindividual,thatgivesrisetoallthemoreimportantmodificationsofstructurewhichtheinnumerablebeingsonthefaceoftheearthareenabledtostrugglewitheachother,andthebestadaptedtosurvive。"

Wehavedweltatlengthuponthissubject,becauseofitsgreatgeneralimportance,andbecausewebelievethatProfessorKolliker’scriticismsonthisheadarebaseduponamisapprehensionofMr。Darwin’sviews——substantiallytheyappeartoustocoincidewithhisown。TheotherobjectionswhichProfessorKollikerenumeratesanddiscussesarethefollowing*:——

[footnote]*SpacewillnotallowustogiveProfessorKolliker’sargumentsindetail;ourreaderswillfindafullandaccurateversionoftheminthe’Reader’forAugust13thand20th,1864。

"1。Notransitionalformsbetweenexistingspeciesareknown;andknownvarieties,whetherselectedorspontaneous,nevergosofarastoestablishnewspecies。"

TothisProfessorKollikerappearstoattachsomeweight。Hemakesthesuggestionthattheshort—facedtumblerpigeonmaybeapathologicalproduct。

"2。Notransitionalformsofanimalsaremetwithamongtheorganicremainsofearlierepochs。"

Uponthis,ProfessorKollikerremarksthattheabsenceoftransitionalformsinthefossilworld,thoughnotnecessarilyfataltoDarwin’sviews,weakenshiscase。

"3。Thestruggleforexistencedoesnottakeplace。"

Tothisobjection,urgedbyPelzeln,Kolliker,veryjustly,attachesnoweight。

"4。Atendencyoforganismstogiverisetousefulvarieties,andanaturalselection,donotexist。

"Thevarietieswhicharefoundariseinconsequenceofmanifoldexternalinfluences,anditisnotobviouswhytheyall,orpartially,shouldbeparticularlyuseful。Eachanimalsufficesforitsownends,isperfectofitskind,andneedsnofurtherdevelopment。Should,however,avarietybeusefulandevenmaintainitself,thereisnoobviousreasonwhyitshouldchangeanyfurther。ThewholeconceptionoftheimperfectionoforganismsandthenecessityoftheirbecomingperfectedisplainlytheweakestsideofDarwin’sTheory,anda’pisaller’(Nothbehelf)becauseDarwincouldthinkofnootherprinciplebywhichtoexplainthemetamorphoseswhich,asIalsobelieve,haveoccurred。"

HereagainwemustventuretodissentcompletelyfromProfessorKolliker’sconceptionofMr。Darwin’shypothesis。Itappearstoustobeoneofthemanypeculiarmeritsofthathypothesisthatitinvolvesnobeliefinanecessaryandcontinualprogressoforganisms。

Again,Mr。Darwin,ifwereadhimaright,assumesnospecialtendencyoforganismstogiverisetousefulvarieties,andknowsnothingofneedsofdevelopment,ornecessityofperfection。Whathesaysis,insubstance:Allorganismsvary。Itisinthehighestdegreeimprobablethatanygivenvarietyshouldhaveexactlythesamerelationstosurroundingconditionsastheparentstock。Inthatcaseitiseitherbetterfitted(whenthevariationmaybecalleduseful),orworsefitted,tocopewiththem。Ifbetter,itwilltendtosupplanttheparentstock;ifworse,itwilltendtobeextinguishedbytheparentstock。

If(asishardlyconceivable)thenewvarietyissoperfectlyadaptedtotheconditionsthatnoimprovementuponitispossible,——itwillpersist,because,thoughitdoesnotceasetovary,thevarietieswillbeinferiortoitself。

If,asismoreprobable,thenewvarietyisbynomeansperfectlyadaptedtoitsconditions,butonlyfairlywelladaptedtothem,itwillpersist,solongasnoneofthevarietieswhichitthrowsoffarebetteradaptedthanitself。

Ontheotherhand,assoonasitvariesinausefulway,i。e。whenthevariationissuchastoadaptitmoreperfectlytoitsconditions,thefreshvarietywilltendtosupplanttheformer。

SofarfromagradualprogresstowardsperfectionforminganynecessarypartoftheDarwiniancreed,itappearstousthatitisperfectlyconsistentwithindefinitepersistenceinoneestate,orwithagradualretrogression。Suppose,forexample,areturnoftheglacialepochandaspreadofpolarclimatalconditionsoverthewholeglobe。Theoperationofnaturalselectionunderthesecircumstanceswouldtend,onthewhole,totheweedingoutofthehigherorganismsandthecherishingofthelowerformsoflife。CryptogamicvegetationwouldhavetheadvantageoverPhanerogamic;HydrozoaoverCorals;CrustaceaoverInsecta,andAmphipodaandIsopodaoverthehigherCrustacea;

CetaceansandSealsoverthePrimates;thecivilizationoftheEsquimauxoverthatoftheEuropean。

"5。Pelzelnhasalsoobjectedthatifthelaterorganismshaveproceededfromtheearlier,thewholedevelopmentalseries,fromthesimplesttothehighest,couldnotnowexist;insuchacasethesimplerorganismsmusthavedisappeared。"

TothisProfessorKollikerreplies,withperfectjustice,thattheconclusiondrawnbyPelzelndoesnotreallyfollowfromDarwin’spremisses,andthat,ifwetakethefactsofPalaeontologyastheystand,theyrathersupportthanopposeDarwin’stheory。

"6。GreatweightmustbeattachedtotheobjectionbroughtforwardbyHuxley,otherwiseawarmsupporterofDarwin’shypothesis,thatweknowofnovarietieswhicharesterilewithoneanother,asistheruleamongsharplydistinguishedanimalforms。

"IfDarwinisright,itmustbedemonstratedthatformsmaybeproducedbyselection,which,likethepresentsharplydistinguishedanimalforms,areinfertile,whencoupledwithoneanother,andthishasnotbeendone。"

Theweightofthisobjectionisobvious;butourignoranceoftheconditionsoffertilityandsterility,thewantofcarefullyconductedexperimentsextendingoverlongseriesofyears,andthestrangeanomaliespresentedbytheresultsofthecross—fertilizationofmanyplants,shouldall,asMr。Darwinhasurged,betakenintoaccountinconsideringit。

Theseventhobjectionisthatwehavealreadydiscussed(’supra’,p。

178)。

Theeighthandlaststandsasfollows:——

"8。ThedevelopmentaltheoryofDarwinisnotneededtoenableustounderstandtheregularharmoniousprogressofthecompleteseriesoforganicformsfromthesimplertothemoreperfect。

"TheexistenceofgenerallawsofNatureexplainsthisharmony,evenifweassumethatallbeingshavearisenseparatelyandindependentofoneanother。Darwinforgetsthatinorganicnature,inwhichtherecanbenothoughtofgeneticconnexionofforms,exhibitsthesameregularplan,thesameharmony,astheorganicworld;andthat,tociteonlyoneexample,thereisasmuchanaturalsystemofmineralsasofplantsandanimals。"

WedonotfeelquitesurethatweseizeProfessorKolliker’smeaninghere,butheappearstosuggestthattheobservationofthegeneralorderandharmonywhichpervadeinorganicnature,wouldleadustoanticipateasimilarorderandharmonyintheorganicworld。Andthisisnodoubttrue,butitbynomeansfollowsthattheparticularorderandharmonyobservedamongthemshouldbethatwhichwesee。Surelythestripesofdunhorses,andtheteethofthefoetal’Balaena’,arenotexplainedbythe"existenceofgenerallawsofNature。"Mr。

Darwinendeavourstoexplaintheexactorderoforganicnaturewhichexists;notthemerefactthatthereissomeorder。

Andwithregardtotheexistenceofanaturalsystemofminerals;theobviousreplyisthattheremaybeanaturalclassificationofanyobjects——ofstonesonasea—beach,orofworksofart;anaturalclassificationbeingsimplyanassemblageofobjectsingroups,soastoexpresstheirmostimportantandfundamentalresemblancesanddifferences。NodoubtMr。Darwinbelievesthatthoseresemblancesanddifferencesuponwhichournaturalsystemsorclassificationsofanimalsandplantsarebased,areresemblancesanddifferenceswhichhavebeenproducedgenetically,butwecandiscovernoreasonforsupposingthathedeniestheexistenceofnaturalclassificationsofotherkinds。

And,afterall,isitquitesocertainthatageneticrelationmaynotunderlietheclassificationofminerals?Theinorganicworldhasnotalwaysbeenwhatweseeit。Ithascertainlyhaditsmetamorphoses,and,veryprobably,along"Entwickelungsgeschichte"outofanebularblastema。Whoknowshowfarthatamountoflikenessamongsetsofminerals,invirtueofwhichtheyarenowgroupedintofamiliesandorders,maynotbetheexpressionofthecommonconditionstowhichthatparticularpatchofnebulousfog,whichmayhavebeenconstitutedbytheiratoms,andofwhichtheymaybe,inthestrictestsense,thedescendants,wassubjected?

Itwillbeobviousfromwhathaspreceded,thatwedonotagreewithProfessorKollikerinthinkingtheobjectionswhichhebringsforwardsoweightyastobefataltoDarwin’sview。Butevenifthecasewereotherwise,weshouldbeunabletoacceptthe"TheoryofHeterogeneousGeneration"whichisofferedasasubstitute。Thattheoryisthusstated:——

"Thefundamentalconceptionofthishypothesisis,that,undertheinfluenceofagenerallawofdevelopment,thegermsoforganismsproduceothersdifferentfromthemselves。Thismighthappen(1)bythefecundatedovapassing,inthecourseoftheirdevelopment,underparticularcircumstances,intohigherforms;(2)bytheprimitiveandlaterorganismsproducingotherorganismswithoutfecundation,outofgermsoreggs(Parthenogenesis)。"

Infavourofthishypothesis,ProfessorKollikeradducesthewell—knownfactsofAgamogenesis,or"alternategeneration";theextremedissimilarityofthemalesandfemalesofmanyanimals;andofthemales,females,andneutersofthoseinsectswhichliveincolonies:

andhedefinesitsrelationstotheDarwiniantheoryasfollows:——

"ItisobviousthatmyhypothesisisapparentlyverysimilartoDarwin’s,inasmuchasIalsoconsiderthatthevariousformsofanimalshaveproceededdirectlyfromoneanother。Myhypothesisofthecreationoforganismsbyheterogeneousgeneration,however,isdistinguishedveryessentiallyfromDarwin’sbytheentireabsenceoftheprincipleofusefulvariationsandtheirnaturalselection:andmyfundamentalconceptionisthis,thatagreatplanofdevelopmentliesatthefoundationoftheoriginofthewholeorganicworld,impellingthesimplerformstomoreandmorecomplexdevelopments。Howthislawoperates,whatinfluencesdeterminethedevelopmentoftheeggsandgerms,andimpelthemtoassumeconstantlynewforms,Inaturallycannotpretendtosay;butIcanatleastadducethegreatanalogyofthealternationofgenerations。Ifa’Bipinnaria’,a’Brachialaria’,a’Pluteus’,iscompetenttoproducetheEchinoderm,whichissowidelydifferentfromit;ifahydroidpolypecanproducethehigherMedusa;

ifthevermiformTrematode’nurse’candevelopwithinitselftheveryunlike’Cercaria’,itwillnotappearimpossiblethattheegg,orciliatedembryo,ofasponge,foronce,underspecialconditions,mightbecomeahydroidpolype,ortheembryoofaMedusa,anEchinoderm。"

Itisobvious,fromtheseextracts,thatProfessorKolliker’shypothesisisbaseduponthesupposedexistenceofacloseanalogybetweenthephenomenaofAgamogenesisandtheproductionofnewspeciesfrompre—existingones。Butistheanalogyarealone?Wethinkthatitisnot,and,bythehypothesis,cannotbe。

ForwhatarethephenomenaofAgamogenesis,statedgenerally?Animpregnatedeggdevelopsintoanasexualform,A;thisgivesrise,asexually,toasecondformorforms,B,moreorlessdifferentfromA。Bmaymultiplyasexuallyagain;inthesimplercases,however,itdoesnot,but,acquiringsexualcharacters,producesimpregnatedeggsfromwhenceA,oncemore,arises。

NocaseofAgamogenesisisknowninwhich,’whenAdifferswidelyfromB’,itisitselfcapableofsexualpropagation。NocasewhateverisknowninwhichtheprogenyofB,bysexualgeneration,isotherthanareproductionofA。

ButifthisbeatruestatementofthenatureoftheprocessofAgamogenesis,howcanitenableustocomprehendtheproductionofnewspeciesfromalreadyexistingones?LetussupposeHyaenastohaveprecededDogs,andtohaveproducedthelatterinthisway。ThentheHyenawillrepresentA,andtheDog,B。ThefirstdifficultythatpresentsitselfisthattheHyenamustbeasexual,ortheprocesswillbewhollywithoutanalogyintheworldofAgamogenesis。Butpassingoverthisdifficulty,andsupposingamaleandfemaleDogtobeproducedatthesametimefromtheHyaenastock,theprogenyofthepair,iftheanalogyofthesimplerkindsofAgamogenesis*istobefollowed,shouldbealitter,notofpuppies,butofyoungHyenas。FortheAgamogeneticseriesisalways,aswehaveseen,A:B:A:B,etc。;

whereas,fortheproductionofanewspecies,theseriesmustbeA:B:

B:B,etc。Theproductionofnewspecies,orgenera,istheextremepermanentdivergencefromtheprimitivestock。AllknownAgamogeneticprocesses,ontheotherhand,endinacompletereturntotheprimitivestock。HowthenistheproductionofnewspeciestoberenderedintelligiblebytheanalogyofAgamogenesis?

[footnote]*If,onthecontrary,wefollowtheanalogyofthemorecomplexformsofAgamogenesis,suchasthatexhibitedbysome’Trematoda’andbythe’Aphides’,theHyaenamustproduce,asexually,abroodofasexualDogs,fromwhichothersexlessDogsmustproceed。Attheendofacertainnumberoftermsoftheseries,theDogswouldacquiresexesandgenerateyoung;buttheseyoungwouldbe,notDogs,butHyaenas。Infact,wehave’demonstrated’,inAgamogeneticphenomena,thatinevitablerecurrencetotheoriginaltype,whichis’asserted’tobetrueofvariationsingeneral,byMr。Darwin’sopponents;andwhich,iftheassertioncouldbechangedintoademonstrationwould,infact,befataltohishypothesis。

TheotheralternativeputbyProfessorKolliker——thepassageoffecundatedovainthecourseoftheirdevelopmentintohigherforms——would,ifitoccurred,bemerelyanextremecaseofvariationintheDarwiniansense,greaterindegreethan,butperfectlysimilarinkindto,thatwhichoccurredwhenthewell—knownAnconRamwasdevelopedfromanordinaryEwe’sovum。IndeedwehavealwaysthoughtthatMr。Darwinhasunnecessarilyhamperedhimselfbyadheringsostrictlytohisfavourite"Naturanonfacitsaltum。"Wegreatlysuspectthatshedoesmakeconsiderablejumpsinthewayofvariationnowandthen,andthatthesesaltationsgiverisetosomeofthegapswhichappeartoexistintheseriesofknownforms。

StronglyandfreelyaswehaveventuredtodisagreewithProfessorKolliker,wehavealwaysdonesowithregret,andwetrustwithoutviolatingthatrespectwhichisdue,notonlytohisscientificeminenceandtothecarefulstudywhichhehasdevotedtothesubject,buttotheperfectfairnessofhisargumentation,andthegenerousappreciationoftheworthofMr。Darwin’slabourswhichhealwaysdisplays。ItwouldbesatisfactorytobeabletosayasmuchforM。

Flourens。

ButthePerpetualSecretaryoftheFrenchAcademyofSciencesdealswithMr。DarwinasthefirstNapoleonwouldhavetreatedan"ideologue;"

andwhiledisplayingapainfulweaknessoflogicandshallownessofinformation,assumesatoneofauthority,whichalwaystouchesupontheludicrous,andsometimespassesthelimitsofgoodbreeding。

Forexample(p。56):——

"M。Darwincontinue:’Aucunedistinctionabsoluen’aeteetnepoutetreetablieentrelesesp_cesetlesvarietes。’Jevousaidejaditquevousvoustrompiez;unedistinctionabsolueseparelesvarietesd’aveclesespeces。"

"Jevousaidejadit;moi,M。leSecretaireperpetueldel’AcademiedesSciences:etvous"’Quin’etesrien,PasmemeAcademicien;’

whatdoyoumeanbyassertingthecontrary?"BeingdevoidoftheblessingsofanAcademyinEngland,weareunaccustomedtoseeourablestmentreatedinthisfashion,evenbya"PerpetualSecretary。"

Oragain,consideringthatifthereisanyonequalityofMr。Darwin’sworktowhichfriendsandfoeshavealikebornewitness,itishiscandourandfairnessinadmittinganddiscussingobjections,whatistobethoughtofM。Flourens’assertion,that"M。Darwinnecitequelesauteursquipartagentsesopinions。"(P。

40。)

Oncemore(p。65):——

"Enfinl’ouvragedeM。Darwinaparu。Onnepeutqu’etrefrappedutalentdel’auteur。Maisqued’ideesobscures,qued’ideesfausses!

Queljargonmetaphysiquejetemalaproposdansl’histoirenaturelle,quitombedanslegalimatiasdesqu’ellesortdesideesclaires,desideesjustes!Quellangagepretentieuxetvide!Quellespersonificationspuerilesetsurannees!Olucidite!Osoliditedel’espritFrancais,quedevenez—vous?"

"Obscureideas,""metaphysicaljargon,""pretentiousandemptylanguage,""puerileandsuperannuatedpersonifications。"Mr。DarwinhasmanyandhotopponentsonthissideoftheChannelandinGermany,butwedonotrecollecttohavefoundpreciselythesesinsinthelongcatalogueofthosehithertolaidtohischarge。Itisworthwhile,therefore,toexamineintothesediscoverieseffectedsolelybytheaidofthe"lucidityandsolidity"ofthemindofM。Flourens。

AccordingtoM。Flourens,Mr。Darwin’sgreaterroristhathehaspersonifiedNature(p。10),andfurtherthathehas"imaginedanaturalselection:heimaginesafterwardsthatthispowerofselection(pouvoird’_lire)whichhegivestoNatureissimilartothepowerofman。Thesetwosuppositionsadmitted,nothingstopshim:

heplayswithNatureashelikes,andmakesherdoallhepleases。"

(P。6。)

AndthisisthewayM。Flourensextinguishesnaturalselection:

"Voyonsdoncencoreunefois,cequ’ilpeutyavoirdefondedanscequ’onnommeelectionnaturelle。

"L’electionnaturellen’estsousunautrenomquelanature。Pourunetreorganise,lanaturen’estquel’organisation,niplusnimoins。

"Ilfaudradoncaussipersonnifierl’organisation,etdirequel’organisationchoisitl’organisation。L’electionnaturelleestcetteformesubstantielledontonjouaitautrefoisavectantdefacilite。

Aristotedisaitque’Sil’artdebatiretaitdanslebois,cetartagiraitcommelanature。’Alaplacedel’artdebatirM。Darwinmetl’electionnaturelle,etc’esttoutun:l’unn’estpaspluschimeriquequel’autre。"(P。31。)

AndthisisreallyallthatM。FlourenscanmakeofNaturalSelection。

Wehavegiventheoriginal,infearlestatranslationshouldberegardedasatravesty;butwiththeoriginalbeforethereader,wemaytrytoanalysethepassage。"Foranorganizedbeing,Natureisonlyorganization,neithermorenorless。"

Organizedbeingsthenhaveabsolutelynorelationtoinorganicnature:aplantdoesnot,dependonsoilorsunshine,climate,depthintheocean,heightaboveit;thequantityofsalinemattersinwaterhavenoinfluenceuponanimallife;thesubstitutionofcarbonicacidforoxygeninouratmospherewouldhurtnobody!ThattheseareabsurditiesnooneshouldknowbetterthanM。Flourens;buttheyarelogicaldeductionsfromtheassertionjustquoted,andfromthefurtherstatementthatnaturalselectionmeansonlythat"organizationchoosesandselectsorganization。"

Forifitbeonceadmitted(whatnosanemandenies)thatthechancesoflifeofanygivenorganismareincreasedbycertainconditions(A)anddiminishedbytheiropposites(B),thenitismathematicallycertainthatanychangeofconditionsinthedirectionof(A)willexerciseaselectiveinfluenceinfavourofthatorganism,tendingtoitsincreaseandmultiplication,whileanychangeinthedirectionof(B)willexerciseaselectiveinfluenceagainstthatorganism,tendingtoitsdecreaseandextinction。

Or,ontheotherhand,conditionsremainingthesame,letagivenorganismvary(andnoonedoubtsthattheydovary)intwodirections:

intooneform(a)betterfittedtocopewiththeseconditionsthantheoriginalstock,andasecond(b)lesswelladaptedtothem。Thenitisnolesscertainthattheconditionsinquestionmustexerciseaselectiveinfluenceinfavourof(a)andagainst(b),sothat(a)willtendtopredominance,and(b)toextirpation。

ThatM。Flourensshouldbeunabletoperceivethelogicalnecessityofthesesimplearguments,whichlieatthefoundationofallMr。Darwin’sreasoning;thatheshouldconfoundanirrefragabledeductionfromtheobservedrelationsoforganismstotheconditionswhichliearoundthem,withametaphysical"formesubstantielle,"orachimericalpersonificationofthepowersofNature,wouldbeincredible,wereitnotthatotherpassagesofhisworkleavenoroomfordoubtuponthesubject。

"Onimagineune’electionnaturelle’que,pourplusdemenagement,onmeditetreinconsciente,sanss’apercevoirquelecontre—senslitteralestprecisementla:’electioninconsciente’。"(P。52。)

"J’aidejaditcequ’ilfautpenserde’l’electionnaturelle’。Ou’l’electionnaturelle’n’estrien,ouc’estlanature:maislanaturedouee’d’election’,maislanaturepersonnifiee:derniereerreurduderniersiecle:Lexixefaitplusdepersonnifications。"(P。53。)

M。Flourenscannotimagineanunconsciousselection——itisforhimacontradictioninterms。DidM。Flourensevervisitoneoftheprettiestwatering—placesof"labelleFrance,"theBaied’Arcachon?Ifso,hewillprobablyhavepassedthroughthedistrictoftheLandes,andwillhavehadanopportunityofobservingtheformationof"dunes"

onagrandscale。Whatarethese"dunes"?ThewindsandwavesoftheBayofBiscayhavenotmuchconsciousness,andyettheyhavewithgreatcare"selected,"fromamonganinfinityofmassesofsilexofallshapesandsizes,whichhavebeensubmittedtotheiraction,allthegrainsofsandbelowacertainsize,andhaveheapedthembythemselvesoveragreatarea。Thissandhasbeen"unconsciouslyselected"fromamidstthegravelinwhichitfirstlaywithasmuchprecisionasifmanhad"consciouslyselected"itbytheaidofasieve。PhysicalGeologyisfullofsuchselections——ofthepickingoutofthesoftfromthehard,ofthesolublefromtheinsoluble,ofthefusiblefromtheinfusible,bynaturalagenciestowhichwearecertainlynotinthehabitofascribingconsciousness。

Butthatwhichwindandseaaretoasandybeach,thesumofinfluences,whichwetermthe"conditionsofexistence,"istolivingorganisms。

Theweakaresiftedoutfromthestrong。Afrostynight"selects"thehardyplantsinaplantationfromamongthetenderonesaseffectuallyasifitwerethewind,andthey,thesandandpebbles,ofourillustration;or,ontheotherhand,asiftheintelligenceofagardenerhadbeenoperativeincuttingtheweakerorganismsdown。Thethistle,whichhasspreadoverthePampas,tothedestructionofnativeplants,hasbeenmoreeffectually"selected"bytheunconsciousoperationofnaturalconditionsthanifathousandagriculturistshadspenttheirtimeinsowingit。

ItisoneofMr。Darwin’smanygreatservicestoBiologicalsciencethathehasdemonstratedthesignificanceofthesefacts。Hehasshownthat——givenvariationandgivenchangeofconditions——theinevitableresultistheexerciseofsuchaninfluenceuponorganismsthatoneishelpedandanotherisimpeded;onetendstopredominate,anothertodisappear;andthusthelivingworldbearswithinitself,andissurroundedby,impulsestowardsincessantchange。

Butthetruthsjuststatedareascertainasanyotherphysicallaws,quiteindependentlyofthetruth,orfalsehood,ofthehypothesiswhichMr。Darwinhasbaseduponthem;andthatM。Flourens,missingthesubstanceandgraspingatashadow,shouldbeblindtotheadmirableexpositionofthem,whichMr。Darwinhasgiven,andseenothingtherebuta"derniereerreurduderniersiecle"——apersonificationofNature——leadsusindeedtocrywithhim:"Olucidite!Osoliditedel’espritFrancais,quedevenez—vous?"

M。Flourenshas,infact,utterlyfailedtocomprehendthefirstprinciplesofthedoctrinewhichheassailssorudely。Hisobjectionstodetailsareoftheoldsort,sobatteredandhackneyedonthissideoftheChannel,thatnotevenaQuarterlyReviewercouldbeinducedtopickthemupforthepurposeofpeltingMr。Darwinoveragain。WehaveCuvierandthemummies;M。RoulinandthedomesticatedanimalsofAmerica;thedifficultiespresentedbyhybridismandbyPalaeontology;

Darwinisma’rifacciamento’ofDeMailletandLamarck;Darwinismasystemwithoutacommencement,anditsauthorboundtobelieveinM。

Pouchet,etc。etc。Howoneknowsitallbyheart,andwithwhatreliefonereadsatp。65——

"JelaisseM。Darwin!"

ButwecannotleaveM。Flourenswithoutcallingourreaders’attentiontohiswonderfultenthchapter,"DelaPreexistencedesGermesetdel’Epigenese,"whichopensthus:——

"Spontaneousgenerationisonlyachimaera。Thispointestablished,twohypothesesremain:thatof’pre—existence’andthatof’epigenesis’。Theoneofthesehypotheseshasaslittlefoundationastheother。"(P。163。)

"Thedoctrineof’epigenesis’isderivedfromHarvey:followingbyocularinspectionthedevelopmentofthenewbeingintheWindsordoes,hesaweachpartappearsuccessively,andtakingthemomentof’appearance’forthemomentof’formation’heimagined’epigenesis’。"

(P。165。)

Onthecontrary,saysM。Flourens(p。167),"Thenewbeingisformedatastroke(’toutd’uncoup’)asawhole,instantaneously;itisnotformedpartbypart,andatdifferenttimes。

Itisformedatonceatthesingle’individual’momentatwhichtheconjunctionofthemaleandfemaleelementstakesplace。"

ItwillbeobservedthatM。Flourensuseslanguagewhichcannotbemistaken。Forhim,thelaboursofvonBaer,ofRathke,ofCoste,andtheircontemporariesandsuccessorsinGermany,France,andEngland,arenon—existent:and,asDarwin"imagina"naturalselection,soHarvey"imagina"thatdoctrinewhichgiveshimanevengreaterclaimtothevenerationofposteritythanhisbetterknowndiscoveryofthecirculationoftheblood。

Languagesuchasthatwehavequotedis,infact,sopreposterous,soutterlyincompatiblewithanythingbutabsoluteignoranceofsomeofthebestestablishedfacts,thatweshouldhavepasseditoverinsilencehaditnotappearedtoaffordsomecluetoM。Flourens’

unhesitating,’apriori’,repudiationofallformsofthedoctrineofprogressivemodificationoflivingbeings。Hewhosemindremainsuninfluencedbyanacquaintancewiththephenomenaofdevelopment,mustindeedlackoneofthechiefmotivestowardstheendeavourtotraceageneticrelationbetweenthedifferentexistingformsoflife。ThosewhoareignorantofGeology,findnodifficultyinbelievingthattheworldwasmadeasitis;andtheshepherd,untutoredinhistory,seesnoreasontoregardthegreenmoundswhichindicatethesiteofaRomancamp,asaughtbutpartandparceloftheprimevalhill—side。SoM。

Flourens,whobelievesthatembryosareformed"toutd’uncoup,"

naturallyfindsnodifficultyinconceivingthatspeciescameintoexistenceinthesameway。

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