Well,howcanthismultitudeofvariedinstinctsteachusanythingaboutgradualtransformation?Willtheoneandonlydagger—thrustoftheCercerisandtheScoliatakeustothetwothrustsoftheCalicurgus,tothethreethrustsoftheSphex,tothemanifoldthrustoftheAmmophila?Yes,ifweconsideronlynumericalprogression。Oneandonearetwo;twoandonearethree:sorunthefigures。Butisthiswhatwewanttoknow?Whathasarithmetictodowiththecase?
Isnotthewholeproblemsubordinatetoaconditionthatcannotbetranslatedintocyphers?Asthepreychanges,theanatomychanges;
andthesurgeonalwaysoperateswithacompleteunderstandingofhissubject。Thesingledagger—thrustisadministeredtogangliacollectedintoacommoncluster;themanifoldthrustsaredistributedoverthescatteredganglia;ofthetwothrustsoftheTarantula—
huntress,onedisarmsandtheotherparalyses。Andsowiththeothers:thatistosay,theinstinctisdirectedeachtimebythesecretsofthenervousorganism。Thereisaperfectharmonybetweentheoperationandthepatient\'sanatomy。
ThesinglestrokeoftheScoliaisnolesswonderfulthantherepeatedstrokesoftheAmmophila。Eachhasherappointedgameandeachslaysitbyamethodasrationalasanythatourownsciencecouldinvent。Inthepresenceofthisconsummateknowledge,whichleavesusutterlyconfounded,whatapoorargumentisthatof11=