Medical Essays

第28章

Forcedoesnotadmitofexplanation,norofproperdefinition,anymorethanthehypotheticalsubstratumofmatter。IfweassumetheInfiniteasomnipresent,omniscient,omnipotent,wecannotsupposeHimexcludedfromanypartofHiscreation,exceptfromrebellioussoulswhichvoluntarilyexcludeHimbytheexerciseoftheirfatalprerogativeoffree-will。Force,then,istheactofimmanentDivinity。Ifindnomeaninginmechanicalexplanations。Newton’shypothesisofanetherfillingtheheavenlyspacesdoesnot,I

confess,helpmyconceptions。Iwill,andthemusclesofmyvocalorgansshapemyspeech。Godwills,andtheuniversearticulatesHispower,wisdom,andgoodness。ThatisallIknow。Thereisnobridgemymindcanthrowfromthe“immaterial“causetothe“material“

effect。

Theproblemofforcemeetsuseverywhere,andIprefertoencounteritintheworldofphysicalphenomenabeforereachingthatoflivingactions。Itisonlythenamefortheincomprehensiblecauseofcertainchangesknowntoourconsciousness,andassumedtobeoutsideofit。FormeitistheDeityHimselfinaction。

IcanthereforeseealargesignificanceinthesomewhatboldlanguageofBurdach:“Thereisformebutonemiracle,thatofinfiniteexistence,andbutonemystery,themannerinwhichthefiniteproceedsfromtheinfinite。Sosoonaswerecognizethisincomprehensibleactasthegeneralandprimordialmiracle,ofwhichourreasonperceivesthenecessity,butthemannerofwhichourintelligencecannotgrasp,sosoonaswecontemplatethenatureknowntousbyexperienceinthislight,thereisforusnootherimpenetrablemiracleormystery。“

Letusturntoabranchofknowledgewhichdealswithcertaintiesuptothelimitofthesenses,andisinvolvedinnospeculationsbeyondthem。Incertainpointsofview,HUMANANATOMYmaybeconsideredanalmostexhaustedscience。Fromtimetotimesomesmallorganwhichhadescapedearlierobservershasbeenpointedout,——suchpartsasthetensortarsi,theoticganglion,orthePacinianbodies;butsomeofourbestanatomicalworksarethosewhichhavebeenclassicformanygenerations。TheplatesofthebonesinVesalius,threecenturiesold,arestillmasterpiecesofaccuracy,asofart。ThemagnificentworkofAlbinusonthemuscles,publishedin1747,isstillsupremeinitsdepartment,astheconstantreferencesofthemostthoroughrecenttreatiseonthesubject,thatofTheile,sufficientlyshow。Morehasbeendoneinunravellingthemysteriesofthefasciae,buttherehasbeenatendencytooverdothiskindofmaterialanalysis。AlexanderThomsonsplitthemupintocobwebs,asyoumayseeintheplatestoVelpeau’sSurgicalAnatomy。IwellrememberhowheusedtoshakehisheadoverthecoarseworkofScarpaandAstleyCooper,——asifDenner,whopaintedtheseparatehairsofthebeardandporesoftheskininhisportraits,hadspokenlightlyofthepicturesofRubensandVandyk。

Notonlyhaslittlebeenaddedtothecatalogueofparts,butsomethingslongknownhadbecomehalf-forgotten。Louisandothersconfoundedthesolitaryglandsofthelowerpartofthesmallintestinewiththosewhich“thegreatBrunner,“asHallercallshim,describedin1687asbeingfoundintheduodenum。ThedisplayofthefibrousstructureofthebrainseemedanoveltyasshownbySpurzheim。OneisstartledtofindthemethodanticipatedbyRaymondVieussensnearlytwocenturiesago。IcanhardlythinkGordonhadeverlookedathisfigures,thoughhenamestheirauthor,whenhewrotethecaptiousandsneeringarticlewhichattractedsomuchattentioninthepagesofthe“EdinburghReview。“

Thisistheplace,ifanywhere,tomentionanyobservationsIcouldpretendtohavemadeinthecourseofmyteachingthestructureofthehumanbody。Icanmakenobettershowthanmostofmypredecessorsinthiswell-reapedfield。Thenucleatedcellsfoundconnectedwiththecancellatedstructureofthebones,whichIfirstpointedoutandhadfiguredin1847,andhaveshownyearlyfromthattimetothepresent,andthefossamasseterica,ashallowconcavityontheramusofthelowerjaw,forthelodgmentofthemassetermuscle,whichacquiressignificancewhenexaminedbythesideofthedeepcavityonthecorrespondingpartinsomecarnivoratowhichitanswers,mayperhapsbeclaimedasdeservingattention。Ihavealsopleasedmyselfbymakingaspecialgroupofthesixradiatingmuscleswhichdivergefromthespineoftheaxis,or

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