Fabre, Poet of Science

第3章

Theselastarenotalwaysthemostscholarlynorthemostlearnednorthemostpatient,buttheyarethosewhopossessinahighdegreethatspecialvision,thatgift,properlyspeakingpoetic,whichisknownastheclinicaleye,whichatthefirstglanceperceivesandconfirmsthediagnosisinallitsdetail。

Fabrehasamindpropitioustosuchprocesses;andif,bychance,circumstanceshaddirectedhisattentiontomedicine,thatsciencewhichisbaseduponanabundantprovisionoffacts,butinwhichgoodsenseandakindofdivinationplayastillwiderpart,thereisnodoubtthathewouldhavebeencapableofbecomingashininglightinthisnewarena。

HewasfullofadmirationforthatotherillustriousVauclusian,Fran?oisRaspail(7/16。),whosemedicalgeniusanticipatedPasteurandalltheconceptionsofmodernmedicine。Itwouldseemthathefoundinhimhisowntemper,hisownfashionofseeingandrepresentingthings。HelovedRaspail’sbooksandhisprescriptions,fullofreasonandamostjudiciousgoodsense,distrustingforhimselfandforhisfamilythecomplicatedformulaeandcunningremediesofanarttooconsideredandstillunproved。

AtCarpentras,whilehisfirst-born,émile,washoveringbetweenlifeanddeath,andthephysicianwhocametoseehim,“beingattheendofhisresources。”didnothingmoreforhimandsoonceasedtocome,thinkingthatthechildwouldnotlasttillthemorrow,FabreflewtotheworksofRaspail。

“Isearchedtodiscoverwhathismaladywas。Ifoundit,andhewastreateddayandnightaccordingly。To-dayheisconvalescent;andhisappetitehasreturned。Ibelieveheissaved,andIshallsay,likeAmbroiseParé,’I

havenursedhim;Godhascuredhim。’“(7/17。)

Theepisodewhichherelates,when,attheprimaryschoolofAvignon,aretorthadjustburst,“spurtinginalldirectionsitscontentsofvitriol。”rightinthemidstofthesuddenlyinterruptedchemistrylesson,andwhen,thankstohispromptaction,hesavedthesightofoneofhiscomrades,doeshonourtohisinitiativeandpresenceofmind。(7/18。)

While“allphysiciansshouldbowbeforethefactswhichheexcelsindiscovering“(7/19。),hehasalsobeenabletomakedirectapplicationofthemarvelsofentomologytosomeoftheproblemsofhygieneandmedicine。

Hehasshownthattheirritantpoisonsecretedbycertaincaterpillars,“whichsetsthefingerswhichhandlethemonfire。”isnothingbutawasteproductoftheorganism,aderivativeofuricacid;hedoesnothesitatetoperformpainfulexperimentsonhimselfinordertofurnishtheproofofhistheory;andheexplainsthusthecuriouscasesofdermatitiswhichareoftenobservedamongsilkworm-breeders。(7/20。)Heprovestheuselessnessofourmeat-safesofmetallicgauze,intendedtopreservemeatagainstcontamination,andtheefficacyofamereenvelopeofpaper,notonlytopreservemeatfromflies,butalsoourgarmentsfromtheclothes-moth。

(7/21。)HerecommendsthecuriousProven?alrecipe,whichconsistsinboilingsuspectedmushroomsinsaltandwaterbeforeeatingthem。Finallyhesuggeststomembersofthemedicalprofessionthattheymightperhapsextractheroicremediesfromthesetreacherousvegetables。(7/22。)

Hehadneedofthatindefiniteleisurewhichhadhithertobeensowhollylacking,fortheeventsofephemerallivesoccuratindeterminatehours,atunexpectedmoments,andareofbriefduration。

So,attentivetotheirleastmovements,Fabregoesforthtoobservethemattheearliestbreakofday,inthereddawn,whenthebee“popsherheadoutofheratticwindowtoseewhattheweatheris。”andthespidersofthethicketslieinwaitunderthewhorlsoftheirnets,“whichthetearsofnighthavechangedintochapletsofdewdrops,whosemagicjewellery,sparklinginthesun。”isalreadyattractingmothsandmidges。

Seatedforhoursbeforeasprigofterebinth,hiseye,armedwiththemagnifyingglass,followstheslowmanoeuvresoftheterebinthlouse,whoseproboscis“cunninglydistilsthevenomwhichcausestheleaftoswellandproducesthoseenormoustumours,thosemisshapenandmonstrousgalls,inwhichtheyoungpasstheirperiodofslumber。”

Hewatchesatnight,bythedimlightofalantern,tocopytheScolopendraathertask,seekingtosurprisethesecretofhereggs(7/23。);toobservetheCioneconstructinghercapsuleofgoldbeater’sskin,ortheProcessionalcaterpillarstravellingheadtotailalongtheirsatintrail,extinguishinghiscandleonlywhensleepatlastsetshiseyelidsblinking。

Hewillwakeearlytowitnessthefairy-likeresurrectionofthesilkwormmoth(7/24。);“inordernottolosethemomentwhenthenymphburstsherswaddling-bands。”orwhenthewingofthelocustissuesfromitssheathand“commencestosprout“;nospectacleintheworldismorewonderfulthanthesightof“thisextraordinaryanatomyinprocessofformation。”theunrollingofthese“bundlesoftissue,cunninglyfoldedandreducedtothesmallestpossiblecompass“intheinsignificantalarstumps,whichgraduallyunfold“likeanimmensesetofsails。”likethe“body-linenoftheprincess“ofthefairy-tale,whichwascontainedinonesinglehemp-

seed。(7/25。)

InhisHarmasheislikeastrangerdiscoveringanunknownworld;“likeakindlygiantfromSirius,holdingamagnifyingglasstohiseye,retaininghisbreath,lestitshouldoverturnandsweepawaythepigmieswhichheisobserving。”

HispassionforinterrogatingtheSphinxoflife,everywhereandatallmoments,sufficedtofillhisdaysfromoneendoftheyeartotheother。

Whensomedistantsubjectinterestedhim,evenonthemostscorchingdays,hewouldput“hislunchinhispocket,anappleandacrustofbread。”andsitoutinthehotsunlight,accompaniedbyhisdog,Vasco,Tom,orRabbit;

fearingonlythatsomeimportunatethirdpersonmightcomebetweennatureandhimself。

Whenhewalkedinhisgardenhewouldletnothingescapehim;witnessthoseprecisenotesofaneclipseofthesun,andoftheeffectswhichthatphenomenonproducesuponanimallifeasawhole。

Whilehischildrenfollowedtheprogressofthemoonacrossthesunthroughapaneofsmokedglass,heattentivelyobservedallthatoccurredinthecountryside。

“Itisfour;thedaygrowspale;thetemperatureisfresher;thecockscrow,surprisedbythiskindoftwilightwhichcomesbeforethehour。Afewdogsarebaying……Theswallows,numerousbefore,havealldisappeared……acouplehavetakenrefugeinmystudy,onewindowofwhichisopen……whenthenormallightreturnstheywillcomeoutdoorsoncemore……Thenightingale,whichhadsolongimportunedmebyhisinterminablesong,issilentatlast(7/26。);theblack-cappedskylarks,whichwerewarblingcontinually,aresuddenlystill……onlytheyounghouse-sparrowsunderthetilesoftheroofaremournfullychirping……Peaceandsilence,thedaylightmorethanhalfgone……IntheHarmasIcannolongerseetheinsectsflying;

Ifindonlyonebeepillagingtherosemary;alllifehasdisappeared。

“Onlyaweevil,theLixus。”whichheisobservinginacage,“continues,stepbystep,withouttheslightestemotion,hisamorousby-play,asthoughnothingunusualwerehappening……Thenightingaleandtheskylarkmaybesilent,oppressedbyfear;thebeemayre-enterherhive;butisaweeviltobeupsetbecausethesunthreatenstogoout?“(7/27。)

Hewasnolesscuriousconcerningtheresurrectionofthesun,andeverytimehemadeanexcursiontotheVentouxhewascarefulnottomissthisspectacle;settingoutatanearlyhourfromthefootofthemountain,sothathemightseethedawngrowbrightfromthesummitofitsrockymass;

thenthesun,suddenlyrisinginthemorningbreeze,andsettingfire,littlebylittle,totheAlpsofDauphinéandthehillsofComtat;andtheRh?ne,farbelow,slenderasasilverthread。

Hetookinfinitepleasuretooindrinkinghisfillofthesublimeterrorsofthethunderstorm,whichheregardedasoneofthemostmagnificentspectacleswhichnaturecanoffer;notcontentwithobservingitthroughglass,hewouldopenwidethewindowsatnightthebettertoenjoythephosphorescenceoftheatmosphere,theconflagrationoftheclouds,theburstsofthunder,andallthesolemnpompwithwhichthegreatpurifyingphenomenonmanifestsitself。

Butpureobservation,aspractisedbyhispredecessors,RéaumurandHuber,isofteninsufficient,or“furnishesonlyaglimpseofmatters。”

Hehadrecourse,therefore,toartificialobservationofthekindknownasexperimentation,andwemaysaythatFabrewasreallythefirsttoemploytheexperimentalmethodinthestudyofthemindsofanimals。

Nearthefieldofobservation,therefore,isthenaturalist’sworkshop,“theanimallaboratory。”inwhichsuchinductionsasmaybesuggestedbythedoingsandthemovementsoftheinsects“whichroamatlibertyamidstthethymeandlavender“aresubjectedtothetestofexperiment。Itisagreat,silent,isolatedroom,brilliantlylightedbytwowindowsfacingsouth,uponthegarden,oneatleastofwhichisalwayskeptopenthattheinsectsmaycomeandgoatliberty。

Intheglass-toppedboxesofpinewhichoccupyalmosttheentireheightofthewhitewashedwallsarecarefullyarrangedthecollectionssopatientlyamassed;alltheentomologicalfaunaoftheSouthofFrance,andthesea-

shellsoftheMediterranean;anabundantwealthalsoofdiversrarities;

numismaticaltreasuresandfragmentsofpotteryandotherprehistoricaldocuments,ofwhichthenumerousossuariesintheneighbourhoodofSérignan,scatteredhereandthereuponthehills,containmanyspecimens。

Atthetop,crowningthefacadeofglass-toppedcaseslikeanimmensefrieze,isthecolossalherbarium,thefirstvolumesofwhichgobacktotheearlyyouthoftheirowner;alltheflora,bothoftheMidiandtheNorth,thoseoftheplainsandthoseofthemountains,andallthealgaeoffreshandsaltwater。

ButitmustnotbesupposedthatFabreattachesanygreatvaluetothesecollections,enormousthoughthesumoflabourwhichtheyrepresent。Tohimtheyhavebeenameansofeducation,ameansoforganizingandarranginghisknowledge,andnotofsatisfyinganidlecuriosity;nottheamusementofonecontentwiththerindofthings。Inordertoidentifyatfirstsightsuchspecimensasoneencountersandproposestoexamine,onemustfirstofalllearntoobserveandtoseethoroughly,andtoschooltheeyesinthecoloursandformspeculiartoeachindividualspecies。

OnemayfairlycomplainofRéaumur,forexample,thathisknowledgewasuncertainandincomplete。Toooftenheleaveshisreadersundecidedastothenatureofthespecieswhosehabitshedescribes。Fabrehimself,bydintofcriticizingwithsomuchhumourtheabuseofclassifications,hassometimesallowedhimselftofallintothesamefault。(7/28。)Hehastakengoodcare,however,nottoneglectthesystematicstudyofspecies;witnesshis“FloraoftheVaucluse“andthatcarefulcatalogueofAvignonwhichhehasnotdisdainedtorepublish。(7/29。)Thetruthisthat“ifwedonotknowtheirnamestheknowledgeofthethingsescapesus“(7/30。),andhewasprofoundlyconsciousofthetruthofthispreceptofthegreatLinnaeus。

Themiddleoftheroomisentirelyoccupiedbyagreattableofwalnut-

wood,onwhicharearrangedbottles,test-tubes,andoldsardine-boxes,whichFabreemploysinordertowatchtheevolutionofathousandnamelessordoubtfuleggs,toobservethelaboursoftheirlarvae,thecreationandthehatchingofcocoons,andthelittlemiraclesofmetamorphosis,“afteragerminationmorewonderfulthanthatoftheacornwhichmakestheoak。”

Coversofmetallicgauzerestingonearthenwaresaucersfullofsand,afewcarboysandflower-potsorsweetmeatjarsclosedwithasquareofglass;

theseserveasobservationorexperimentalcagesinwhichtheprogressandtheactionsof“thesetinylivingmachines“canbeexamined。

Fabrehasrevealedhimselfasapsychologistwithoutrival,ofaconsummateskillinthedifficultanddelicateartofexperimentation;theartofmakingtheinsectspeak,ofputtingquestionstoit,offorcingittobetrayitssecrets;forexperimentis“theonlymethodwhichcanthrowanylightuponthenatureofinstincts。”

Hisresourcesbeingslenderandhismindinventive,hehasingeniouslysupplementedthepovertyofhisequipment,andhasdiscoveredlesscostlyandlesscomplexmeansofconductinghisexperiments;knowingthesecretofextractingthesublimesttruthfromclumsycombinationsof“trivial,peasant-madearticles。”

Hehassucceeded,inhisrusticlaboratory,inapplyingtherigorousrulesofinvestigationandexperimentationestablishedbythegreatbiologists。

Hehasthereforebeenabletoestablishhisbeautifulobservationsinamannersoindisputablethatthosewhocomeafterhimandaretemptedtostudythesamethingscanbutarriveatthesameresults,andderiveinspirationfromhisresearches。

Tonotewithcareallthedetailsofaphenomenonisthefirstessential,sothatothersmayafterwardsrefertothemandprofitbythem;thedifficultthingistointerpretthem,todiscoverthecircumstances,thewhysandwherefores,theconsequences,andtheconnectinglinks。

Butasinglefactobservedbychanceatthewayside,andwhichwouldnotevenattracttheattentionofanother,willbeinstantlyluminoustothissearchingunderstanding,itwillsuggestquestionsunforeseen,andwillevoke,byanticipation,preconceivedideasandsuddenflashesofintuition,whichwillnecessitatethetestofexperiment。

Why,forexample,doesthePhilanthus,thatslenderwasp,whichcapturesthehoney-beeupontheblossomsinordertofeedherlarvae;why,beforeshecarriesherpreytoheroffspring,doesshe“outragethedyinginsect。”

bysqueezingitscropinordertoemptyitofhoney,inwhichsheappearstodelight,anddoesindeedactuallydelight?

“Thebanditgreedilytakesinhermouththeextendedandsugaredtongueofthedeadinsect;thenoncemoreshepressestheneckandthethorax,andoncemoreappliesthepressureofherabdomentothehoney-sacofthebee。

Thehoneyoozesforthandisinstantlylickedup。Thusthebeeisgraduallycompelledtodisgorgethecontentsofthecrop。Thisatrociousmeallastsoftenhalfanhourandlonger,untilthelasttraceofhoneyhasdisappeared。”

Thedetailedanswerisobtainedbyexperiment,whichperfectlyexplainsthis“odiousfeast。”theexcuseforwhichissimplymaternity。ThePhilanthusknows,instinctively,withouthavinglearnedit,thathoney,whichisherordinaryfare,is,byaverysingular“inversion。”amortalpoisontoherlarvae。(7/31。)

Asanaccomplishedphysiologist,Fabreconductsallkindsofexperiments。

Behindthewiresofhiscages,heprovokesthemovingspectacleofthescorpionatgripwiththewholeentomologicalfauna,inordertotesttheeffectsofitsterriblevenomuponvariousspecies;andthushediscoversthestrangeimmunityoflarvae;thevirus,“thereagentofatranscendentchemistry,distinguishesthefleshofthelarvafromthatoftheadult;itisharmlesstotheformer,butmortaltothelatter“;afreshproofthat“metamorphosismodifiesthesubstanceoftheorganismtothepointofchangingitsmostintimateproperties。”(7/32。)

Youmayjudgefromthisthatheknowsthroughandthroughthehistoryofthecreatureswhichformthesubjectsofhisfaithfulnarratives。Heisinformedofthesmallesteventsoftheirlives。Hepossessesacalendaroftheirbirths;herecordstheirchronologyandthesuccessionofgenerations;hehasnotedtheirmethodsofwork,examinedtheirdiet,andrecordedtheirmeals。Hediscoversthemotiveswhichdictatetheirpeculiaritiesofchoice;whytheCerceris,forinstance,amongallthevictimsatitsdisposal,neverselectsanythingbuttheBuprestisandtheweevils。Heisfamiliartoowiththeirtacticsofwarfareandtheirmethodsofconflict。

Hisgazehaspenetratedeventhemosthiddendwellings;thoseinwhichtheHalictus“varnisheshercellsandmakestheroundloafwhichistoreceivetheegg“;inwhich,underthecoverofcocoons,murderousgrubsdevourslumberingnymphs;eventhedepthsofthesoilarenothiddenfromhim,forthere,thankstohisartifices,hehassurprisedtheastonishingsecretoftheMinotaur。

Hesiftsalldoubtfulstories;anecdotes,statementsofsupposedhabits;

allthatisincoherent,orillobserved,ormisinterpreted;alltheclicheswhichthemakersofbookspassfromhandtohand。

Inplaceofrepetitionhegivesuslaws,constantfacts,fixedrules。

Withincomparableskill,herepeatsandteststheancientexperimentsofRéaumur。

HeisnotcontenttoshowusthatErasmusDarwinismistaken;hepointsouthowitisthathehasfallenintoerror。(7/33。)

Hesetshimselftodecipherthemeaningofoldtales,skilfullydisengagingthelittleparceloftruthwhichusuallyliesbeneathamassofincorrectorevenfalsestatements。HecriticisesLaFontaine,andquestionsthestatementsofHorusApolloandPliny。Fromamassofundigestedknowledgehehascreatedthelivingscienceofentomology,whichhadreceivedfromRéaumurafirstbreathofvitality,insuchwisethateachindividualcreatureispresentedinhisworkwithitspreciseexpressionandtheabsolutetruthofitscharacterandattitudes;theinhabitantsofthewoodsandfields,whetherthosewhichfeeduponthecropsorthosewhichliveinthecrevicesoftherocks,ortheobscureworkersthatcrawlupontheearth;allthosewhichhaveasecrettotellorsomethingtoteachus;theCigale,sodifferentfromtheinsectoftheFable;andaboveallthatbeetlewhosenamehadhithertobeenencounteredarrayedinthemostfantasticlegends,thefamousScarabaeussacerofthetombs,whichFabrepreferredtoplaceattheheadofhisepicasanagreeableprologue,althoughtheinquiryrelativetohisamazingfeatsbelongschronologicallytoacomparativelyrecentperiodofhiscareer。

Howmoderateheisinsuchsuppositionsasheventures;howcautiouswhenhispersistentpatiencehasatlaststruckagainst“theinaccessiblewalloftheUnknowable“!Then,withadmirablefrankness,tranquilandsincere,hesimplyownsthat“hedoesnotknow。”unlikesomanyothers,whoseuncriticalmindsarecontentedwithafragmentaryvision,andrunsofaraheadofthefactsthattheycanonlypromoteindefiniteillusionanderror。

Oneissurprisedindeedtoremarkhowfewevenofthemostlearnedandwell-informedofmenhavearealaptitudeforobservation,andahighlyinstructivebookmightbewrittenconcerningthediscrepanciesandtheweakpointsinourknowledge。Iftheyweresubjectedtoasufficientlyseveretest,howthreadbarewouldappearmanyofthoseproblemswhichnatureandtheworldpresent,andwhichareregardedasresolved!

Howlong,forinstance,wasneededtodestroythelegendofthecuckoo,incessantlyrepeateddowntothedaysofXavierRaspail,andtoussofamiliar;toelucidateitshistory,andtosetitinitstruelight!

(7/34。)

Itisbymeansofsuchdataasthesethatascienceisfounded,fortheoriesdecay,andonlywell-observedfactsremainirrefragable。Withstonessuchasthese,whicharehewnbythegreatartisan,thestructuresofthefuturewillbebuilt,andourownscience,perhaps,willonedayberefashioned。

ForthisreasonFabre’sbooksareaneducationforallthosewhowishtodevotethemselvestoobservation;amanualofmentaldiscipline,atrue“essayuponmethod。”whichshouldbereadbyeverynaturalist,andthemostinteresting,instructive,familiaranddelightfulcourseoftrainingthathaseverbeenknown。

Ontheotherhand,itisimpossibletoconceivewhatlabourthisdelicateworkdemands;whatperseveranceFabrehasrequiredpainfullytoextractonegrainofgold;togleanandunitethedefinitefactors,thepositivedocuments,whichservedasfoundationsforeachofhisessays;lucid,limpid,andcaptivatingasthemostdelightfuloffairy-tales。Wearecharmed,fascinated,andastonished;weseenothingofthegropingadvance,thechecks,andallthetoilandthepatiencedemanded。Wedonotsuspectthelongwaiting,thehesitation,thedesperatelengthoftheinquiries。

Forexample,toestablishthecuriousrelationswhichexistbetweenthewaspsandtheVolucellae,whatlongandrepeatedexperimentswereneedful!

Hisnotebooks,inwhichherecords,fromdaytoday,allthathesees,areevidenceofthis。Whatwatchesinthealleyoflilacs,yearafteryear,todecipherthemechanismandthemodeofconstructionofthehunting-netoftheEpe?ra!Someofthesehistories,likethatofthehyper-metamorphosisoftheMelo?,wereonlycompletedastheresultoftwenty-fiveyearsofassiduousinquiry,whilefortyyearswererequiredtocompletethatoftheScarabaeussacer,forhisobservationofitwasalwayspartial;itisalmostalwaysimpossibletodivinewhatonecannotseefromthelittlethatonedoessee;andasaruleonemustreturntothesamepointoverandoveragaininordertofilluplacunae。

ThemajorityoftheinsectswhichFabrehasstudiedaresolitary,andareonlytobeencounteredsingly,scatteredoverwideareasofcountry。Someliveonlyindeterminedspots,andnotelsewhere,suchasthefamousCerceris,ortheyellow-wingedSphex,ofwhichnotraceistobefoundbeyondthelimitsoftheCarpentrascountryside。

Theproperseasonmustbewatchedfor;onemustbereadyatanymomenttoprofitbyaluckychance,andresignoneselftointerminablewatchesatthebottomofaravine,orkeeponthealertforhoursunderafierysun。Oftenthechancegoesby,orthetrailfollowedprovesfalse;buttheseasonisover,andonemustwaitforthereturnofanotherspring。ThetradeofobserverinmanycasesresemblestheexhaustinglaboursoftheSisyphusbeetle,painfullypushinghispelletuparoughandstonypath;sothattheteamhaltsandstaggersateverymoment,theloadspillsoverandrollsaway,andallhastobecommencedoveragain。

Wecannowcastback,inordertoconsideratleisuretheimmortalstudywhichmarkedthebeginningofhisfame,withthegreaterinterestandprofitinthatFabrehasbeenable,duringhisretirement,togeneralizeandextendhisdiscovery。(7/35。)

LetusfirstofallnotehowtheobservationwhichDufourhadmadeofthenestoftheCerceriswastransformedinhishands,andwhatdevelopmentshewasabletoevolvetherefrom。

SincetheyhavebeendefinitelyestablishedbyFabrethesecuriousfactshavebeenwell-known。Theyformperhapsthegreatestprodigypresentedbyentomology,thatsciencesofullofmarvels。

Thesewaspsnourishthemselvesonlyonthenectarofflowers;buttheirlarvae,whichtheywillneverbehold,musthavefreshandsucculentfleshstillpalpitatingwithlife。

Theinsectdigsatunnelinthesoil,inwhichsheplaceshereggs,andhavingprovisionedthecellwithselectedgame——cricket,spider,caterpillar,orbeetle——shefinallyclosestheentrance,whichshedoesnotagaincross。

Likenearlyallinsects,theyoungwaspisborninthelarvalstate,andfromthemomentofitshatchingtotheendofitsgrowth——thatistosay,foraperiodofmanydays——thegrubenclosedinitscellcanlookfornohelpfromwithout。

Herethenisafascinatingproblem:eitherthevictimsdepositedbythemotheraredead,anddesiccationorputrefactionattacksthempromptly,orelsetheyareliving,asindeedthelarvaerequire;butthen“whatwillbecomeofthisfragilecreature,whichamerenothingwilldestroy,shutinthenarrowchamberoftheburrowamongvigorousbeetles,forweeksonendworkingtheirlongspurredlegs;oratgripswithamonstrouscaterpillarmakingplaywithitsflanksandmandibles,rollingandunrollingitstortuousfolds?“

SuchisthethrillingmysteryofwhichFabrediscoveredthekey。

Withinconceivableingenuity,thevictimisseizedandthrowntotheground,andthewaspplungeshersting,notatrandomintothebody,whichwouldinvolvetheriskofdeath,butatdeterminedpoints,exactlyintotheseatofthoseinvisiblenervousganglionswhosemechanismcommandsthevariousmovementsofthecreature。

Immediatelyafterthesesubtlewoundsthepreyisparalysedthroughoutitsbody;itsmembersappeartobedisarticulated,“asthoughallthespringswerebroken“;thetruecorpseisnotmoremotionless。

Butthewoundisnotmortal;notonlydoestheinsectcontinuetolive,butithasacquiredthestrangeprerogativeofbeingabletoliveforaverylongperiodwithouttakinganynourishment,thankspreciselytotheconditionofimmobility,insomesortvegetative,whichparalysisconfersuponit。

Whenthehourstrikesthehungrylarvawillfinditsfavouritemeatservedtoitsliking;anditwillattackthisdefencelesspreywithallthecircumspectionofarefinedeater;“withanexquisitelydelicateart,nibblingthevisceraofitsvictimlittlebylittle,withaninfalliblemethod;thelessessentialpartsfirstofall,andonlyinthelastinstancethosewhicharenecessarytolife。Herethenisanincomprehensiblespectacle;thespectacleofananimalwhich,eatenalive,mouthfulbymouthful,duringnearlyafortnight,ishollowedout,growslessandless,andfinallycollapses。”whileretainingtotheenditssucculenceanditsfreshness。

Thefactisthatthemotherhastakencaretodepositheregg“atapointalwaysthesame“intheregionwhichherstinghasrenderedinsensible,sothatthefirstmouthfulsareonlyfeeblyresented。Butastheenemygoesdeeperanddeeper“itsometimeshappensthatthecricket,bittentothequick,attemptstoretaliate;butitonlysucceedsinopeningandclosingthepincersofitsmandiblesontheemptyair,orinuselesslywavingitsantennae。”Vainefforts:“fornowthevoraciousbeasthasbittendeepintothespot,andcanwithimpunityransacktheentrails。”Whataslowandhorribleagonyfortheparalysedvictim,shouldsomeglimmerofconsciousnessstilllingerinitspunybrain!Whataterriblenightmareforthelittlefield-cricket,suddenlyplungedintothedenoftheSphex,sofarfromthesunlittuftofthymewhichsheltereditsretreat!

Toparalysewithoutkilling,“todeliverthepreytothelarvaeinertbutliving“:thatistheendtobeattained;onlythemethodvariesaccordingtothespeciesofthehunterandthestructureoftheprey;thustheCerceris,whichattacksthecoleoptera,andtheScolia,whichpreysuponthelarvaeoftherose-beetle,stingthemonlyonceandinasingleplace,becausethereisconcentratedthemassofthemotorganglions。

ThePompilus,whichselectsaspiderforitsvictim,nolessthantheredoubtableTarantula,knowsthatitsquarry“hastwonervouscentreswhichanimaterespectivelythemovementsofthelimbsandthoseoftheterriblefangs;hencethetwostabsofthesting。”(7/36。)

TheSphexplungesherdaggerthreetimesintothebreastofthecricket,becausesheknows,byanintuitionthatwecannotcomprehend,thatthelocomotorinnervationofthecricketisactuatedbythreenervouscentres,whichliewideapart。(7/37。)

Finally,theAmmophila,“thehighestmanifestationofthelogicofinstinct,whoseprofoundknowledgeleavesusconfounded,stabsthecaterpillarinnineplaces,becausethebodyofthevictimwithwhichitfeedsitslarvaeisaseriesofrings,setendtoend,eachofwhichpossessesitslittleindependentnervouscentre。”(7/38。)

Thisisnotall;thegeniusoftheSphexisnotyetattheendofitsforesight。Youhavedoubtlessheardofthecomatosestateintowhichthewoundedfallwhen,afterafractureoftheskull,thebrainiscompressedbyaviolenthaemorrhageorabonysplinter。Thephysiologistsimitatethisprocessofnaturewhentheywish,forexample,toobtain,inanimalsunderexperiment,astateofcompleteimmobility。Butdidthefirstsurgeonwhothoughtoftrepanningtheskullinordertoexertonthebrain,bymeansofasponge,acertaindegreeofcompression,everimaginethatananalogousprocedurehadlongbeenemployedintheinsectworld,andthattheseclumsymethodsweremerelychild’splaybesidetheastonishingfeatsoftheUnconscious?

Forthestabinthethoracicganglions,howeverefficacious,isofteninsufficient。Althoughthesixlimbsareparalysed,althoughthevictimcannotmove,itsmandibles,“pointed,sharp,serrated,whichcloselikeapairofscissors,stillremainamenacetothetyrant;theymightatleast,bygrippingthesurroundinggrasses,opposeamoreorlesseffectualresistancetotheprocessofcarryingoff。”Sotheprecedingmanoeuvresareconsummatedbyakindofgarrotting;thatis,theinsect“takescaretocompressthebrainofitsvictim,butsoastoavoidwoundingit;producingonlyastupor,asimpletorpor,apassinglethargy。”Isnottheingeniousobserverjustifiedinconcludingthat“thisisalarminglyscientific“?

BetweenthedrystatementsofDufour,whichservedFabreashisoriginaltheme,andtheunaccustomedwealthofthisvastphysiologicalpoetry,whatadistancehasbeencovered!

Howfarhaveweoutstrippedthisbarrenmatter,theseshapelesssketches!

Dufour,anothersolitary,whoretiredtohisprovince,inthedepthoftheLandes,wasabovealladescriptiveanatomist,andhelimitedhimselftoaninventoryofthenestofaCerceris。

ForhimtheBuprestesweredead,andtheirstateofpreservationwasexplainedsimplyasakindofembalming,duetosomespecialactionofthevenomoftheHymenoptera。

Thesefacts,therefore,werestatedassimplecuriosities。

Fabreprovedthatthesevictimspossessedalltheattributesoflifeexceptingmovement,byprovokingcontractionsintheirmembersundertheinfluenceofvariousstimulants,andbykeepingthemaliveartificiallyforanindefiniteperiod。

Ontheotherhand,hedemonstratedthecomparativeinnocuousnessofthevenomofthesewasps,someofwhich,likethegreatCercerisorthebeautifulandformidableScolia,alarmbytheirenormoussizeandtheirterrifyingaspect;sothattheconservationofthepreycouldnotbeduetoanyoccultquality,tosomemoreorlessactiveantisepticvirtueofthevenomousfluid,butsimplytotheprecisionofthestabandthemiraculousdeftnessofthe“surgeon。”

Healsopointedoutthefactthatthestingoftheinsectisableimmediatelytodissociatethenervoussystemofthevegetativelifefromthatofthecorrelativelife,sparingtheformer,andtakingcarenottowoundtheabdomen,whichcontainstheganglionsofthegreatsympatheticnerve,whileitannihilatesthelatter,whichismoreorlessconcentratedalongtheventralfaceofthethoracicregion。

Hecompletedthissplendiddemonstration,notonlybyprovokingunderhisowneyesthe“murderousmanoeuvres,theintimateandpassionatedrama。”butalsobyreproducingexperimentallyalltheseastonishingphenomena;

expoundingtheirmechanismandtheirvariationswithalogicandlucidity,anartandsagacitywhichraisethismarvellousobservation,oneofthemostbeautifulknowntoscience,totheheightofthemostimmortaldiscoveriesofphysiology。ClaudeBernard,inhiscelebratedexperiments,certainlyexhibitednogreaterinvention,notruergenius。

CHAPTER8。THEMIRACLEOFINSTINCT。

“TheSpiritBlowethWhitheritListeth。”

Whatisthisinstinct,whichguidestheinsecttosuchmarvellousresults?

Isitmerelyadegreeofintelligence,orsomeabsolutelydifferentformofactivity?

Isitpossible,bystudyingthehabitsofanimals,todiscoversomeofthoseelementaryspringsofactionwhoseknowledgewouldenableustodivemoredeeplyintoourownnatures?

FabrehaspresentedustohisSphex,the“infallibleparalyser。”Arewetocredithernotonlywithmemory,butalsowiththefacultyofassociatingideas,ofjudgment,andofpursuingatrainofreasoninginrespectofherastonishinglyco-ordinatedactions?

Puttothequestionbythemaliceoftheoperator,the“transcendent“

anatomisttripsoverameretrifle,andtheslightestnoveltyconfoundsher。

Withoutthecircleofherordinaryhabits,whatstupidity,“whatdarknesswrapsherround“!Sheretreats;sherefusestounderstand;“shewasheshereyes,firstpassingherhandsacrosshermouth;sheassumesadreamy,meditativeair。”Whatcanshebepondering?Underwhatformofthought,illusion,ormiragedoestheunfamiliarproblemwhichhasobtrudeditselfintohercustomarylifepresentitselfbehindthosefacetedeyes?(8/1。)

Howcanwetell?Wecanonlyattaintoknowledgeofourselvesbydirectintuition。Itisonlytheideaofouregowhichenablesustoconjecturewhatispassinginthebrainsofourfellows。Betweentheinsectandourselvesnounderstandingispossible,soremotearetheanalogiesbetweenitsorganizationandourown;andwecanonlyformidlehypothesesastoitsstatesofconsciousnessandtherealmotiveofitsactions。

Consideronlythatunknownandmysteriousenergywhichtheinsectsdisplayintheiroperationsandtheirlabours,asitisinitself,andletuscontentourselves,firstofall,withcomparingittoourownintelligence,suchasweconceiveittobe。

Inseekingtoappreciatewherebyitdiffersperhapsweshallgainmorethanbyvainlyseekingpointsofresemblance。Weshalldiscover,infact,behindtheinsectanditsprodigiousinstincts,avastandremotehorizon,aregionatoncemoreprofound,moreextensive,andmorefruitfulthanthatoftheintelligence;andifFabreisabletohelpustodecipherafewpagesof“themostdifficultofallvolumes,thebookofourselves。”itisprecisely,asaphilosophertoldhim,because“manhasremainedinstinctiveinprocessofbecomingintelligent。”(8/2。)

TheworkofFabreisfromthispointofviewaninvaluabletreasuryofobservationsandexperiments,andtherichestcontributionwhichhaseverbeenmadetothestudyofthesefascinatingproblems。

“Thefunctionoftheintelligenceistoreflect,tobeconscious;thatis,torelatetheeffecttoitscause,toadda“because“toa“why“;toremedytheaccidental;toadaptanewcourseofconducttonewcircumstances。”

InrelationtothehumanintelligencethusdefinedFabrehasconsideredthesenervousaptitudes,sowelladjusted,accordingtotheevolutionists,byancienthabit,thattheyhavefinallybecomeimpulsiveandunconscious,and,properlyspeaking,innate。Hehasdemonstrated,withanabundanceofproofandapowerofargumentthatwemustadmire,theblindmechanismwhichdeterminesallthemanifestations,eventhemostextraordinary,ofthatwhichwecallinstinct,andwhichheredityhasfixedinaspeciesofunchangeableautomatism,liketherhythmoftheheartandthelungs。(8/3。)

Letus,fromthiswealthofmaterial,fromamongthemostsuggestiveexamples,selectsomeofhismoststrikingdemonstrations,whichareclassicsoftheirkind。

Fabrehasnotattemptedtodefineinstinct,foritisindefinable;nortoprobeitsessentialnature,whichisimpenetrable。Buttorecognizetheorderofnatureisinitselfasufficientlyfascinatingstudy,withoutstrivingtocrackanunbreakableboneorwastingtimeinponderinginsolubleenigmas。Theimportantmatteristoavoidtheintroductionofillusions,tobewareofexceedingthedataofobservationandexperiment,ofsubstitutingourowninferencesforthefacts,ofoutstrippingrealityandamplifyingthemarvellous。

Letuslistentothescrupulousanalysiswhoselessons,scatteredthroughfourthousandpages,teachusmoreconcerninginstinctanditsinnumerablevariationsthanallthemostlearnedtreatisesandspeculationsofthephilosophers。

Nothingintheworldperplexesthemindoftheobserverlikethespectacleofthebirthandgrowthoftheinstincts。

Atpreciselytherightmoment,justasfailureordisasterseemsforeordainedbythepreviouslyestablishedcircumstances,Fabreshowsushisinsectsassuddenlymasteredbyanirresistibleforce。

“Attherightmoment“theyinvinciblyobeysomesortofmysteriousandinflexibleprescription。Withoutapprenticeship,theyperformtheveryactionsrequired,andblindlyaccomplishtheirdestiny。

Then,themomenthavingpassed,theinstincts“disappearanddonotreawaken。Afewdaysmoreorlessmodifythetalents,andwhattheyounginsectknewtheadulthasoftenforgotten。”(8/4。)

AmongtheLycosae,atthemomentofexodus,asuddeninstinctisevolvedwhichafewhourslaterdisappearsnevertoreturn。Itistheclimbinginstinct,unknowntotheadultspider,andsoonforgottenbytheemancipatedyoung,whoaredestinedtoroamuponthefaceoftheearth。ButtheyoungLycosae,anxioustoleavethematernalhomeandtotravel,becomesuddenlyardentclimbersandaeronauts,eachreleasingalong,lightthreadwhichservesitasparachute。Thevoyageaccomplished,notraceofthisingenuityisleft。Suddenlyacquired,theclimbinginstinctnolesssuddenlydisappears。(8/5。)

Thegreathistoriographerofinstincthasthrownawonderfullight,byhisbeautifulexperimentsrelatingtothenidificationofthemason-bee,upontheindissolublesuccessionofitsdifferentphases;thelinealconcatenation,theinevitableandnecessaryorderwhichpresidesovereachofthesenervousdischargesofwhichthetotalseriesconstitutes,properlyspeaking,amodeofaction。

Themason-beecontinuestobuildupontheready-completednestpresentedtoher。Sheobstinatelyinsistsuponprovisioningacellalreadydulyfilledwiththequantityofhoneyrequiredbythelarva,because,inthiscaseasintheother,theimpulsewhichinciteshertobuildortoprovisionthenesthasnotyetbeenexhausted。

Ontheotherhand,ifweemptythelittlecupofitscontentswhenshehasfilleditshewillnotrecommenceherlabours。“Theprocessofprovisioningbeingcomplete,thesecretimpulsewhichurgedhertocollectherhoneyisnolongeractive。Theinsectthereforeceasestostoreherhoney,and,inspiteofthisaccident,layshereggintheemptycell,thusleavingthefuturenurslingwithoutnourishment。”(8/6。)

InthecaseofthePelopaeus,Fabrecallsourattentiontooneofthemostinstructivephysiologicalspectaclesthatcanbeimagined。

Whilethemason-beedoesnotnoticethathercellhasbeenemptied,thePelopaeuscannotperceivethatthetricksoftheexperimenterhaveresultedinthedisappearanceofherprogeny;andshe“continuestostoreawayspidersforagermthatnolongerexists;sheperseveresuntiringlyinheruselesshunting,asthoughthefutureofherlarvadependedonit;sheamassesprovisionswhichwillfeednoone;more,shepushesaberrationtotheextentofplasteringeventheplacewherehernestwasifweremoveit,givingthelaststrokesofthetroweltoanimaginarybuilding,andputtinghersealsuponemptynothing。”(8/7。)

>Fromthesefacts,andothers,nolesscelebrated,whichshow“theinabilityofinsectstoescapefromtheroutineoftheircustomsandtheirhabituallabours。”Fabrederivessomanyproofsoftheirlackofintelligence。

TheEpe?rafasciataisincapableofreplacingasingleradialthreadinthegeometricalstructureofitsweb,whenbroken;itrecommencestheentirewebeveryevening,andweavesitatonestretchwiththemostbeautifulmastery,asthoughmerelyamusingitself。

ThecaterpillaroftheGreaterPeacockmothteachesusthesamelesson;

whenoccupiedinweavingitscocoonitdoesnotknowhowtorepairanartificialrent;and“inspiteofthecertaintyofitsdeath,orratherthatofthefuturebutterfly,itquietlycontinuestospin,withouttroublingtocovertherent;devotingitselftoasuperfluoustask,andignoringthetreacherousbreach,whichleavesthecocoonanditsinhabitantatthemercyofthefirstthiefthatfindsit。”(8/8。)

Thus“becauseoneactionhasjustbeenperformed,anothermustinevitablybeperformedtocompletethefirst;whatisdoneisdone,andisneverrepeated。Likethewatercourse,whichcannotclimbthehillsandreturntoitssource,theinsectdoesnotretraceitsstepsorrepeatitsactions,whichfollowoneanotherinvariably,andareinevitablyconnectedinanecessaryorder,likeaseriesofechoes,oneofwhichawakensanother……Theinsectknowsnothingofitsmarvelloustalents,justasthestomachknowsnothingofitscunningchemistry。Itbuildslikeabricklayer,weaves,hunts,stabs,andparalyses,asitsecretesthevenomofitsweapons,thesilkofitscocoon,thewaxofitscomb,orthethreadsofitsweb;alwayswithouttheslightestknowledgeofthemeansandtheend。”(8/9。)

Thusinstinctisonethingandintelligenceisanother;andforFabrethereisnotransitionwhichcantransformtheoneintotheother。

Buthowprofoundandabundant,howinfiniteisthesourcefromwhichthismanifoldactivityderives,distributedasitisthroughouttheentireanimalkingdom;andwhichinourselvescommandstheprofoundestpartofournature;unconscious,oreveninoppositiontoourwonderfulintelligence,whichitoftensilencesoraltogetheroverwhelms。

Althoughtheinsect“hasnoneedoflessonsfromitselders“inordertoaccomplishitsbeautifulmasterpieces,thecomprehensiveconceptofthegeniuswhichrisesspontaneouslyandatasinglesteptotheloftiestconceptionsisnotalwaysaproductofpurereason。

Comparethesublimelogicofanimalmaternity,theimpeccabledictatesofinstinct,withthehesitations,thegropings,theuncertainties,theerrorsandtragicfailuresofhumanmaternity,whenitseekstoreplacetheunerringcommandsofinstinctbytheclumsyeffortsoftheintelligence!

Ifallisdarknesstotheanimal,apartfromitshabitualpaths,howfeebleandhesitating,howfalteringandunequalisreasonwhenitseekstoopposeitslaboriousinductionstotheinfalliblewisdomoftheunconscious!

Itis,infact,tothisconcatenationofactions,narrowlyconnectedbyamutualdependence,thatweowethisinexhaustibleseriesofcunningindustriesandwonderfularts。ToFabretheyaresomanyfeatsofalearnedunconsciousness。

“Seethenest,theaccustomedmasterpieceofmothers;itismoreoftenthanotherwiseananimalfruit,acofferfullofgerms,containingeggsinplaceofseeds。”

ThesatinbagoftheEpe?rafasciata,inwhichhereggsareenclosed,“breaksatthecaressofthesun,liketheskinofanover-ripepomegranate。”

TheDorthesia,thelouseinhabitingtheeuphorbia,“treblesthelengthofherbody,prolongingitshinderpartintoapouch,comparabletothatoftheopossum,intowhichtheeggsaredropped,andinwhichtheyoungarehatched,toleaveitafterwardsatwill。”(8/10。)

TheChermesoftheilex“hardensintoarampartofebony,whenceaninnumerablelegionofverminburstsforthonedaywithoutchangingtheirplace。”

Thecapsuleofgold-beater’sskin,inwhichthegrubsoftheCioneareenclosed,dividesitself,atthemomentofliberation,intotwohemispheres“ofaregularitysoperfectthattheyrecallexactlytheburstingofthepyxidiumwhentheseedisdistributed。”(8/11。)

Hereandthere,however,wecatchaglimpseofarudimentofwhatweunderstandbyconsciousness,intheshapeofa“vaguediscrimination。”

Eachplanthasitslover,drawntoitbyakindofelectiveaffinityandinvariabletendency。TheLarramakesforthethistle,theVanessaforthenettle,theClytusfortheilex,andtheCriocerisforthelily。“Theweevilknowsnothingbutitspeasandbeans,thegoldenRhynchitesonlythesloe,andtheBalaninusonlythenutoracorn。”

ButthePieris,whichhauntsthecabbage,frequentsthenasturtiumalso,andthegoldenrose-beetle,which“intoxicatesitselfattheclustersofthehawthorn。”isnolessaddictedtothenectaroftherose。

TheXylocopa,whichburrowsinthetrunksoftreesandoldrafters,forminglittleroundcorridorsinwhichtolodgeheroffspring,“willutilizeartificialgallerieswhichshehasnotherselfbored。”

TheChalicodoma“alsoisawareoftheeconomicadvantagesofanoldabandonednest“;theAnthophoraiscarefultoestablishherfamily“attheleastexpense。”andprofitsonoccasionbygallerieswhichhavebeenminedbypreviousgenerations;adaptingherselftothesenewconditions,sherepairsthetunnelswhichshedidnotconstruct“andeconomizesherforces。”(8/12。)

Itwouldseem,therefore,thatthesetinymindsarecreatedandshapedbymeansofexperience;theyrecognize“thatwhichismostfitting“;theylearn,theycompare;maywenotalsosaythattheyjudge?

DoesnottheMason-bee,“whichrakestheroadsforadrypowderydustandmixesitwithsalivatoconvertitintoahardcement。”foreseethatthismudwillharden?

IsthePelopaeusdevoidofjudgmentwhensheseekstheinteriorofdwelling-housesinordertoshelterhernestofdriedclay,whichtheleastdropofrainwouldreducetoitsoriginalstateofmud?

Isitwithoutknowledgeoftheeffectsthatthesloe-weevilbuildsaventilatingchimneytopreventtheasphyxiationofherlarva?thattheScarabaeussacercontrivesafilteratthesmallerendofitspear-shapedball,bymeansofwhichthegrubisabletobreathe?orthatArachnelabyrintha“introducesinhersilk-workarampartofcompressedearthtoprotecthereggsfromtheprobeoftheIchneumon“?

Maywenotalsoseeamasterpieceofthehighestlogicinthehouseofthetrap-doorspider,Arachneclotho,whichisfurnishedwithadoor,atruedoor“whichshethrowsopenwithapushoftheleg,andcarefullyboltsbehindheronreturningbymeansofalittlesilk“?(8/13。)

WhatamiracleofinventiontooistheprodigiousnestoftheEumenes,“withitseggsuspendedbyathreadfromtheroof,likeapendulum,oscillatingatthelightestbreathinordertosaveitfromcontactwiththecaterpillars,which,incompletelyparalysed,arewrigglingandwrithingbelow“!Later,whentheeggishatched,“thefilamentistransformedintoatube,aplaceofrefuge,upwhichthegrubclambersbackwards。Attheleastsignofdangerfromthemassofcaterpillarsthelarvaretreatsintoitssheathandascendstotheroof,wherethewrigglingswarmcannotreachit。”

(8/14。)

LetusreferalsototheremarkablehistoryoftheCopris。Wecannotdenythatthevaliantdung-beetleiscapableof“evadingtheaccidental“(whichtoFabreconstitutesoneofthedistinctivecharacteristicsoftheintelligence),sinceitimmediatelyintervenesifwiththepointofapenknifeweopentheroofofitsnestandlaybareitsegg。“Thefragmentsraisedbytheknifeareimmediatelybroughttogetherandsoldered,sothatnotraceisleftoftheinjury,andallisoncemoreinorder。”WemayreadalsowithwhatincredibleaddressthemotherCopriswasabletouseandtoprofitbytheready-madepelletsofcow-dungwhichitoccurredtoFabretoofferher。(8/15。)

Buttheirscopeislimited,andencroachesverylittle,intheeyesofthegreatobserver,onthedomainofintelligence。Thishedemonstratestosatiety,andhisastonishingNecrophori,whichadaptthemselvessoadmirablytocircumstancesandtriumphovertheexperimentaldifficultiestowhichhesubjectsthem,seemscarcelytoexceedthelimitsofthoseactionswhichatbottomaremerelyunconscious。(8/16。)

WiththespawningoftheOsmia,Fabrethrowsafreshandunexpectedlightontheintuitiveknowledgeofinstinct。

Wearestillgropingourwayamongthecauseswhichrulethedeterminationofthesexes。Biologyhasonlybeenabletothrowafewscatteredlightsonthesubject,andwepossessonlyafewapproximatedata;whichneverthelessareturnedtoaccountbythebreedersofinsects。Wearestillintheregionofillusionandimperfectprognostics。

ButtheOsmiaknowswhatwedonot。Sheisdeeplyversedinallphysiologicalandanatomicalknowledge,andinthefacultyofcreatingchildrenofeithersexatwill。

Theseprettybees,“withcopperyskinandfleeceofruddyvelvet。”whichestablishtheirprogenyinthehollowofabramblestump,thecavityofareed,orthewindingstaircaseofanemptysnail-shell,knowthefixedandimmutablegeneticlawswhichwecanonlyguessat,andarenevermistaken。

ThismarvellousprerogativetheOsmiashareswithahostofapiaries,inwhichtheunequaldevelopmentofthemalesandfemalesrequiresanunequalprovisionofspaceandofnourishmentforthefuturelarvae。Forthefemales,whoexceedinpointofsize,hugecellsandabundantprovision;

forthemorepunymales,narrowcellsandasmallerrationofpollenandhoney。

NowthecircumstanceswhichareencounteredbytheOsmia,when,pressedbythenecessitiesofspawning,shesearchesforadwelling,areoftenfortuitousandincapableofmodification;andinordertogiveeachsetoflarvaethenecessaryspace“shelaysatwillamaleorafemaleegg,accordingtotheconditionsofspace。”

Inthismarvellousstudy,whichconstitutes,withthehistoryoftheCerceris,thefinestmasterpieceofexperimentalentomology,FabrebrilliantlyestablishesallthedetailsofthatcuriouslawwhichintheHymenopterarulesboththedistributionandthesuccessionofthesexes。Inhisartificialhives,inglasscylinders,heforcestheOsmiatocommenceherspawningwiththemales,insteadofbeginningwiththefemalesasnaturerequires,sincetheinsectisprimarilypreoccupiedwiththemoreimportantsex,thatwhichensuresparexcellencetheperpetuationofthespecies。Heevenforcesthewholeswarmwhichbuzzesabouthiswork-tables,hisbooks,hisbottles,andapparatus,completelytochangetheorderofitsspawning。HeshowsfinallythatintheheartoftheovariestheeggoftheOsmiahasasyetnodeterminedsex,andthatitisonlyattheprecisemomentwhentheeggisonthepointofemergingfromtheoviductthatitreceives,ATTHEWILLOFTHEMOTHER,themysterious,final,andinevitableimprint。

ButwhencedoestheOsmiaderivethis,“distinctideaoftheinvisible“?

HereagainisoneofthoseriddlesofnaturewhichFabredeclareshimselfquiteincapableofsolving。(8/17。)

Isthisall?No;wearefarfromhavingmadethetourofthismiraculousandincommensurablekingdomthroughwhichthisadmirablemasterleadsus,andIshouldneverbedonewereItoattempttoexhaustallthespectacleswhichheoffersus。Letusdescendyetanotherstep,amongcreaturesyetsmallerandhumbler。Weshallfindtendencies,impulses,preferences,efforts,intentions,“Machiavellicrusesandunheard-ofstratagems。”

Certainmiserableblackmites,livingspecks,thelarvaeofabeetle,oneoftheMeloidae,theSitaris,areparasitesofthesolitarybee,theAnthophora。Theywaitpatientlyallthewinterattheentranceofhertunnel,ontheslopeofasunnybank,forthespringtimeemergenceoftheyoungbees,asyetimprisonedintheircellsofclay。AmaleAnthophora,hatchedalittleearlierthanthefemales,appearsintheentranceofthetunnel;thesemites,whicharearmedwithrobusttalons,rousethemselves,hastentoandfro,hookthemselvestohisfleece,andaccompanyhiminallhisperegrinations;buttheyquicklyrecognizetheirerror;fortheseanimatedspecksarewellawarethatthemales,occupiedalldaylonginscouringthecountryandpillagingtheflowers,liveexclusivelyoutofdoors,andwouldinnowiseservetheirend。ButthemomentcomeswhentheAnthophorapayscourttothefairsex,andtheimperceptiblecreatureimmediatelyprofitsbytheamorousencountertochangeitswingedcourser。

“Thesepigmiesthereforehaveamemory,anexperienceoffacts“(andhowoneistemptedtoadd,aglimmeringofintelligence!)。Grapplednowtothefemalebee,thegruboftheSitaris“concealsitself,andallowsitselftobecarriedbyher“totheendofthegalleryinwhichsheisnowcontrivinghercradle,“watchestheprecisemomentwhentheeggislaid,installsitselfuponit,andallowsitselftofalltherewithuponthesurfaceofthehoney,inordertosubstituteitselfforthefutureoffspringoftheAnthophora,andpossessitselfofhouseandvictuals。”(8/18。)

Another“littlegelatinousspeck。”“ashadowofacreature。”thelarvaofaChalcidian,theLeucopsis,oneoftheparasitesoftheMason-bee,knowsthatinthecellofthemasonthereisfoodforoneonly。Scarcelyhasitenteredthetinydwellingbutweseethis“namelessshape“forseveraldays“anxiouslywandering;itvisitsthetopandbottom,theback,thefront,thesides“;itmakesthetourofitsdomain;“itsearchesinthedarkness,palpitating,seeminglywithanobjectinview。”Whatdoesthis“animatedglobule“want?whyisthisatomsoexcited?Itissearchingtodiscoverifthereisnotinsomecornerhithertounexploredanotherlarva,arival,thatitmayexterminateit!(8/19。)

Whatthenintrinsicallyisinstinct?Andwhatintrinsicallyisintelligence?

Howcanweproposetodrawuptheinexhaustibleinventoryofallthemanifestationsoflife,andwhyattempttoincludeallitsspeciesandtheirunknownvarietiesinnarrowclasses?Whysaythatthereareonlytwomodesoflife,instinctontheonehandandintelligenceontheother,“whenweknowhowsubtleandillusiveisthisProteus,andthattherearenottwothingsonly,butathousanddissimilarthings“(8/20。):orratherisitnotalwaysthesamething,everywherepresentandactinginlivingmatter,andsusceptibleofinfinitedegrees,underformsanddisguisesinnumerable?

Thisiswhyitescapesthe“scalpelofthemasters“andtheapparatusofthechemists。Wemaydissect,wemayscrutinizeorgansunderthemagnifyingglass,examinewing-cases,countthenervuresofthewings,thenumberofarticulationsinthelimbs;wemayreckoneverypoint,likeRéaumurforgettingnotaline,notahair;wemaycompareandmeasureeveryportionofthemouth,anddefinetheclass;andweshallnotfindasinglepointinallthisphysicalarchitecturewhichwillpositivelyinformusofthehabitsoftheinsect。Ofwhataccountareafewslightdifferences?Itisinthephysicalfarmorethanintheanatomicaldifferencesthattheinviolabledemarcationbetweentwospeciesexists。Instinctsdominateforms;thetooldoesnotmaketheartisan;“andnoneofthesevariousstructures,howeverwelladaptedtheymayappeartous,bearswithinititsreasonoritsfinality。”

Thuswhateveropinionwemayholdastothenatureofinstinct,theaccomplishmentsandhabitsofinsectsarenot,properlyspeaking,connectedwiththeexternalandvisibleformoftheirorgans,andtheiractsdonotnecessarilypresupposetheinstrumentswhichwouldbeappropriatetothem。

Weknowthatwithmostorganisms,andparticularlywithplants,analmostimperceptiblevariationinmaterialcircumstancesisoftenenoughtomodifytheircharacterandtoproducefreshaptitudes。Nevertheless,wecanbutwonder,withFabre,thatphysicalmodifications,which,whentheydoexist,aresoslightalwaysastohaveescapedthemostperfectobservation,shouldhavesufficedtodeterminetheappearanceofprofoundlydissimilarfaculties。Inexplicableabilities,unexpectedhabits,unforeseenphysicalaptitudes,andunheard-ofindustriesareexercisedbymeansoforganswhicharehereandtherepracticallyidentical。“Thesametoolsareequallygoodforanypurpose。Talentaloneisabletoadaptthemtomanifoldends。”

TheAnthidiahavetwoparticularindustries;“thosewhichfeltcottonandcardthesoftdownofhairyplantshavethesameclaws,thesamemandibles,composedofthesameportionsasthosewhichkneadresinandmixitwithfinegravel。”(8/21。)

Thesloe-weevil“boresthehardstoneofthesloewiththesamerostrumasthatwhichitscongeners,solikeitinconformation,employtorolltheleavesofthevineandthepoplarintotinycigars。”

TheimplementoftheMegachile,therose-fly,isbynomeansappropriatetoitsindustry;“yettheperfectlycircularfragmentsofleaveshavethepreciseperfectionofformthatapunchwouldgive。”

TheXylocopa,inordertopiercewoodandtoboreitsgalleriesinanoldrafter,employs“thesameutensilswhichinothersaretransformedintopicksandmattockstoattackclayandgravel,anditisonlyapredispositionoftalentthatholdseachworkertohisspeciality。”

Moreover,havenotthesuperioranimalsthesamesensesandthesamestructure,yetwhatinequalitythereisamongthem,inthematterofaptitudesanddegreesofintelligence!

Habitsarenomoredeterminedbyanatomicalpeculiaritiesthanareaptitudesorindustries。

ThetwoGoat-mothcaterpillars,ofsimilarstructure,haveentirelydifferentstomachicaptitudes;“theexclusiveportionoftheoneistheoakandoftheotherthehawthornorthecherry-laurel。”

“WhencedoestheMantisderiveitsexcessivehunger,itspugnacity,itscannibalism,andtheEmpusaitssobriety,itspeaceableness,whentheiralmostidenticalorganizationwouldseemtoindicateanidentityofneeds,instincts,andhabits?“

Inthesamewaytheblackscorpionappearstopresentnoneoftheinterestingpeculiaritieswhichweobserveinthehabitsofitscongener,thewhitescorpionofLanguedoc。(8/22。)

Structure,therefore,tellsusnothingofaptitude;theorgandoesnotexplainitsfunction。Letthespecialistshypnotizethemselvesovertheirlensesandmicroscopes;theymayaccumulateatleisuremassesofdetailsrelatingtothisorthatfamilyorgenusorindividual;theymayundertakethemostsubtleinquiries,maywritethousandsandthousandsofpagesinordertodetailafewslightvariations,withoutevensucceedinginexhaustingthematter:theywillnotevenhaveseenwhatismostwonderful。

Whenthelittleinsecthasforthelasttimecleaneditsclaws,thesecretofthelittlemindhasfledforever,withallthefeelingsthatanimateditandgaveitlife。Thatwhichiscrystallizedindeathcannotexplainwhatwaslife。ThisisthethoughtwhichtheProven?alsinger,withthatintuitionwhichistheprivilegeofgenius,hasexpressedinthesemelodiouslines:

“Oh!paudesènqu’emél’escaupreFurnantlamort,cresondesaupre,Lavertudel’abihoelousecrètdoùméu。”

(Omenoflittlesense,whoseek,Scalpelinhand,tomakeDeathtellThevirtueofthebee,thesecretofhercell!)(8/23。)

CHAPTER9。EVOLUTIONOR“TRANSFORMISM。”

“Howdidamiserablegrubacquireitsmarvellousknowledge?Areitshabits,itsaptitudes,anditsindustriestheintegrationoftheinfinitelylittle,acquiredbysuccessiveexperiencesonthelimitlesspathoftime?“

ItisinthesewordsthatFabrepresentstheproblemofevolution。

Difficultthoughitmaybetofollowthesequenceofformswhichhaveendlesslysucceededandreplacedoneanotheronthefaceoftheearth,sincethebeginningoftheworld,itiscertainthatalllivingcreaturesarecloselyrelated;andthemagnificentandfertilehypothesisofevolution,whichseekstoexplainhowextantformsarederivedfromextinct,hastheimmenseadvantageofgivingaplausiblereasonforthemajorityofthefactswhichatleastceasetobecompletelyunintelligible。

Otherwisewecancertainlyneverimaginehowsomanyinstincts,andthesesocomplexandperfect,couldhaveissuedsuddenly“fromtheurnofhazard。”

ButFabrewillsupposenothing;hewillonlyrecordthefacts。Insteadofwanderingintheregionofprobabilities,hepreferstoconfinehimselftothereality,andfortheresttoreplysimplythat“wedonotknow。”

Thisstern,positive,rigorous,independent,andobservantmind,nourishedupongeometryandtheexactsciences,whichhasneverbeenabletocontentitselfwithapproximationsandprobabilities,couldbutdistrusttheseductionsofhypotheses。

Hisrobustcommonsense,whichwasalwayshisprotectionagainstprecipitateconclusions,tooclearlycomprehendsthelimitsofscienceandthenecessityofaccumulatingfacts“uponthethornypathofobservationandexperiment“toindulgeingeneralization。Hefeelsthatlifehassecretswhichourmindsarepowerlesstoprobe,andthat“humanknowledgewillbeerasedfromthearchivesoftheworldbeforeweknowthelastwordconcerningthesmallestfly。”

Thisiswhyhewasregardedas“suspect“bythecompanyofofficialscientists,towhomhewasadissenter,almostatraitor,especiallyatamomentwhenthetheoriesofevolution,theninthefirstflushoftheirnovelty,wereeverywherethecauseofageneralelation。

Nooneasyetwascapableofdiviningthemanofthefutureinthismodestthinkerwhowouldnotacceptthewordofthemastersinterested,butinopposingthetheoryoftransformation,farfrombeingreactionary,Fabrerevealedhimself,atleastinthedomainofanimalpsychology,asaninnovator,atrueprecursor。

Moreover,hisobservations,alwayssodirectandpersonal,oftenrevealedthecontraryofwhatwasassertedorforeseenbythemagicformulaesuggestedbythemind。

Totheingeniousmechanisminventedbythetransformistshepreferredtooppose,notcontraryargument,butthenakedundeniablefact,theobvioustestimony,thecertainandirrefragableexample。“Isit。”hewouldaskthem,“torepulsetheirenemiesthatcertaincaterpillarssmearthemselveswithacorrosiveproduct?ButthelarvaoftheCalosomasycophanta,whichfeedsontheProcessionalcaterpillaroftheoak-tree,paysnoheedtoit,neitherdoestheDermestes,whichfeedsontheentrailsoftheProcessionalcaterpillarofthepine-tree。”

Andconsidermimicry。Accordingtothetheoryofevolution,certaininsectswouldutilizetheirresemblancetocertainothersinordertoconcealthemselves,andtointroducethemselvesintothedwellingsofthelatterasparasiteslivingattheirexpense。SuchwouldbethecasewiththeVolucella,alargeflywhosecostume,stripedwithbrownandyellowbands,givesitaruderesemblancetothewasp。Obliged,ifnotforitsownsakeatleastforthatofitsfamily,toforceitselfintothewasp’sdwellingasaparasite,itdeceitfullydressesitself,wearetold,intheliveryofitsvictim,thusaffordingthemostcuriousandstrikingexampleofmimicry;andnaturalistsinsufficientlyinformedwouldregarditasoneofthegreatesttriumphsofevolution。

NowwhatdoestheVolucellado?Itistruethatitlaysitseggswithoutbeingdisturbedinthenestofthewasp。But,astherigorousobserverwilltellyou,itisapreciousauxiliaryandnotanenemyofthecommunity。Itsgrubs,farfromdisguisingorconcealingthemselves,“comeandgoopenlyuponthecombs,althougheverystrangerisimmediatelymassacredandthrownout。”Moreover,“theywatchthehygieneofthecitybyclearingthenestofitsdeadandriddingthelarvaeofthewaspsoftheirexcretoryproducts。”

Plungingsuccessivelyintoeachchamberofthedormitorytheforepartoftheirbodies,“theyprovoketheemissionofthatfluidexcrementofwhichthelarvae,owingtotheircloistration,containanextremereserve。”Inaword,thegrubsoftheVolucella“arethenursesofthelarvae。”performingthemostintimateduties。”(9/1。)

Whatanastonishingconclusion!Whatadisconcertingandunexpectedreplytothe“theoriesinvogue“!

Fabre,however,withhispoetictemperamentandardentimagination,seemedadmirablypreparedtograspallthatvastnetworkofrelationsbywhichallcreaturesareconnected;butwhatprovesthesolidityofhisimperishableworkisthatalltheories,alldoctrines,andallsystemsmayresorttoitinturnandprofitbyhisproofsandarguments。

Andhehimself,althoughheboastswithsomuchreasonofputtingforwardnopretensions,notheories,nosystems,hashenotevensoyieldedsomewhattothesuggestionsoftheprevailingschoolofthought,andhavenothisverdictsagainstevolutionoftenbeenthemoreexcessiveinthathehaspaidsonotableatributetotheevolutionaryprogressofcreation?

Inthefirstplace,heisfarfromexcludingtheundeniableinfluenceofenvironingcauses;theimmenseroleofthosemyriadexternalcircumstancesonwhichLamarcksostronglyinsisted;buttheworkofthesefactorsis,inhiseyes,onlyaccessoryandwhollysecondaryintheeconomyofnature;andinanycaseitisfarfromexplainingthedefinitedirectionandthetranscendentharmonywhichcharacterizeevolution,bothinitstotalityandinitsmostinfinitesimaldetails。

Inoneofhisadmirablelittletextbooks,intendedtoteachandtopopularizescience,hecomplacentlyenumeratesthehappymodificationseffectedbythat“sublimemagician。”selectionasunderstoodbyDarwin。Heevokesthemetamorphosesofthepotato,which,onthemountainsofChili,ismerelyawretchedvenomoustubercle,andthoseofthecabbage,whichontherockyfaceofoceanicprecipicesisnothingbutaweed,“withatallstemandscantydisorderedleavesofacrudegreen,anacridsavour,andaranksmell“;hespeaksofwheat,formerlyapoorunknowngrass;theprimitivepear-tree“anuglyintractablethornybush,withdetestablebitterfruit“;thewildcelery,whichgrowsbesideponds,“greenallover,hard,witharepulsiveflavour,andwhichgraduallybecomestenderer,sweeter,whiter。”and“ceasestodistilitspoison。”(9/2。)

Withprofoundexactitudethisgreatbiologisthasalsoperceivedthedegreetowhichsizemaybemodified;maydwindletodwarfnesswhenaniggardlysoilrefusestofurnishbeastandplantalikewithasufficientnourishment。

Withoutanycommunicationwiththeotherscientistswhowereoccupiedbythesamequestions,knowingnothingoftheresultswhichtheseexperimentershadattainedinthecaseofsmallmammiferousanimals,andwhichprovethatdwarfnesshasoftennoothercausethanphysiologicalpoverty,heconfirmedandexpandedtheirideasfromanentomologicalpointofview。(9/3。)

Scarcelyever,indeed,washefirstinspiredbythedoingsofothersinthisorthatdirection;hereadscarcelyanything,andnaturewashissoleteacher。Heconsideredthattheknowledgetobeobtainedfrombooksisbutsomuchvapourcomparedwiththerealities;heborrowedonlyfromhimself,andresorteddirectlytothefactsasnaturepresentedthem。Onehasonlytoseehisscantylibraryofoddvolumestobeconvincedhowlittleheowestoothers,whetherwritersorworkers。

Atruenaturalistphilosopher,thisprofoundobserverhasalsothrownalightuponcertainsingularanomalieswhich,intheinsectworld,seemtoconstituteanexception,atalleventsinourEurope,tothegeneralrules。

Itisnotonlytothecuriosityandfortheamusementofentomologiststhatheproposesthesecuriousanatomicalproblems,butalso,andchiefly,totheDarwinianwisdomoftheevolutionists。

Why,forexample,istheScarabaeussacerbornandwhydoesitremainmaimedallitslife;thatistosay,deprivedofallthedigitsontheanteriorlimbs?

“Ifitistruethateverychangeintheformofanappendageisonlythesignofahabit,aspecialinstinct,oramodificationintheconditionsoflife,thetheoryofevolutionshouldendeavourtoaccountforthismutilation,forthesecreaturesare,likeallothers,constructedonthesameplanandprovidedwithabsolutelythesameappendages。”

TheposteriorlimbsoftheGeotrupesstercorarius,“perfectlydevelopedintheadult,areatrophiedinthelarvae,reducedtomerespecks。”

Thegeneralhistoryofthespecies,ofitsmigrationsanditschanges,willdoubtlessonedaythrowlightuponthesestrangeinfirmities,heretemporaryandtherepermanent,whichmayperhapsbeexplainedbyunforeseenencounterswithundiscoveredspecimens,strayedperhapsintodistantcountries。(9/4。)

WhatinvaluabledocumentsfortheentomologistandthehistorianoftheevolutionofthespeciesarethosemultipleandfabulousmetamorphosesoftheSitaresandtheMelo?daewhichthisindefatigableinquirerhasrevealedinalltheirastonishingphases!

Oneofthefinestexamplesofscientificinvestigationisthepursuit,throughaperiodoftwenty-fiveyears,withasagacitywhichseemstoborderondivination,ofthisproblemofHYPER-METAMORPHOSIS。Thelarvaeofthosecoleopterawhichwehaveseenintroduced,withinfernalcunning,intothecellsoftheAnthophora(SeeChapter8above。),suffernolessthanfourmoultsbeforetheybecomenymphs。

Thesemerelyexternaltransformations,whichinvolveonlytheenvelope,andrespecttheinternalstructure,correspondeachwithachangeofenvironmentandofdiet。Eachtimetheorganismadaptsitselftoitsnewmodeofexistence,“asperfectlyaswhenitbecomesadult“;andweseetheinsect,whichwasclear-sighted,becomeblind;itlosesitsfeet,torecoverthemlater;itsslenderbodybecomesventripotent;hard,itgrowssoft;itsmandibles,atfirststeely,becomehollowedoutspoonwise,eachmodificationofconformationhavingitsmotiveinafreshmodificationoftheconditionsofthecreature’slife。

Howexplainthisstrangeevolutionofafourfoldlarvalexistence,thesesuccessiveappearancesoforgans,whichbecomeentirelyunlikewhattheywere,toservefunctionseachtimedifferent?

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