KKBTOOT 8TSTKM 



r d aotly nr- 



. _ _______ __ 



to la. fM by wfctaB It ay b. t*wi, lnimi> 



ini^ 7 ! 'r. ' - n. ,....i to tt iulkp 



balriMid bk* thick oil. tad. MMOnH* 

 ay b. t*wi, lnimi> aad dear. or 



, In UM latter ease are prodoead UM well known 



J --!- " a_^_ -hick UM medulUrr .h 



4" 



with th* eonteote apparently wholly 

 i aad <ai IM Tk* coaguUted t* tuodulm ta fact eeldoiu 

 mmBHMome. ba* MM* ptMraBy froavMta, granular, and a* if 

 golar larger and emallar maam; and, upon 

 aaid. a* if formed of minute, aeparate, or 



from UM and* of UM tubea, or from 

 of DM aheeth, forming larger or 

 i of erery lejagiiihle ahipe regularly apherioal. derate, 

 iifciplnil, lUmiatary, or of the moat btaur* nguree- 

 rto* eoagvtate. either on the eurfaoe merely or throughout, 

 , Kka * ir*a. apear with a doubU contour, or half or 



he Mrrea. appear with a double oontonr, or naif or 

 Bat withta UM fibr** aUo ite etructural condition. 

 of bataf 



~or *. hi 



KtawWaT*. aa-ih tW-itly j-rti.ip.tea. ^J-w"* 

 .Mtral ttre toka* DO part, ariee artiicially, and are dereloped t 

 readily la the tawr -brat with more dafiomte aheatha, such a* 

 fatjad ta UM central oigaai 



-Tha Central or AiifrrUr* of UM n 

 Ream*; Cyttadar Aria, Pwktaj*) a *l 

 Ihianan. which ta eoUre aad unaltered a*l*-abr* U aa hltl* raoog- 

 ambl* a* the ehaalh. being eorrounded by the pulp, and rnanming 

 UM eat** rafmoure power; whilet it come* readily into TMW when 



ordarad b (Uvifiit or liaamillr by irre 

 Mi to b f-Bonlly mrTwhon oif uniform 

 tvtBMd fraa UM liAry hoUh o^Mo 



U ton or tti'tl I whh Tarioot re-ageate; and it may thua be 



ta th* interior of the 

 Under n*tanl oiroumttaDot* it U pale; 

 ; mure rarely finely granular or atrUted, 

 irregular pal* contour lina* ; 

 iaeaa. It i* dtetin- 

 by th* idminawapea 



oft and aVxIbU. it Mill Boi fluid and rieooua, but 

 thing like coagulated albumen, with which it 

 U, agree in moat of tu eheoikal oharaeton. Thia aiia- 



wly that it U 

 to the KM of 



Ta. Nrr,br ta whkh the three etructurea abore daacribed 

 abiHlaill t.adwhkhw*woaldiia%BitiaetheMeduUated, 

 r Pa^Betwarwi. imlHiili.HU tro*. the greater proportiooof thoee 

 ta UM body; bwt Ueid* UMee there are eull 



Thaae are UM nem-fibrea ta 

 wtolh^aiatr**famW4laryak^ath.whiUtheyhar.an 

 tor aWeath and aoejUvta, eoawtioM* kUatioal with UM axla-fibr* of 



, ta Ik* fire* place, aa oo.tinuatoae 

 Wre th* latter are ia ooBeUon with oarre-oelU ; 

 brae, rapiaaaatlug UM *o- 

 Mlhon ; and. Uatly. at UM 

 *>, They may again b* 

 r-p*0tirel,VU-ir 

 or Ua> traiwpareat, more or 

 It murt aU be added that the dark bordered 



aw> dMhr BMwMiy faHlT In raiimt of UM daltaaay or DTMMM 

 of IkairMrMtaM, aad partly ta tholr dainNar, walch nrUa froo. 

 vM M to !- or o. a. thM thoy * ba JJUJHwMiiJ into tea 

 atol oatoto, dJi.^rmU . fr^wb 



fn^n tvM^L A^MM> W jLu 



orik. cininiag ta iraat 

 UM oantrml oran, ta UM 



it b ovidoat that UM 



numUr. 



ta th* oaUa o UM 



law* 1 lai ! I I 



* CNWOTawNraMli 



ofWtral OT^MM; UM 

 praUy .lUuocOy 



NERVOUS 8TSTKX. 



bran* ha* yet beea obaerred, although on* probably exiite. The 

 " of UM natra-oaUa art a toft but tenaeiout eUatic tubttanot 

 Maide* UM nuoUo*. nnntlrti of two element*; firttly, of a 

 clear homogeoaoat Ught-TellowUh or oolourleea matrix, upon which 

 UM pbyaioj propertU* of th* content, depend, and which u a protein- 

 compound ; and, atoondly, of minute granule* of different kinda. In 

 th* oolourlree oerre-oelU that* prearat the form of uniform, rounduh, 

 for th* moat part minute and pale, more rarely darker and larger 

 corpueelea, dbpened throughout the entire oontenU of the cell, and 

 imbedded in the teoacioua matrix; whilet in th* coloured cell*. 

 Uwtoad of Uxa* granulea, more or lea* yellowiah, brown, or blackish 

 oorpuaeUt occur. The Utter are moat ntually of a larger aixe, and 

 art placed, oloaaly aggregated, in a man near the nucleu* ; in other 

 Inatanoat, they nearly fill the entire cell, (firing it the atpect, in all 

 rrapecte, of a brown or bUckiah pigment-cell. In the midit of theae 

 oontoBtaliae the nucleu*, for the moat part a* a rery clear apberical 

 TMtal with dbtinct wall*, perfectly trantparent oontenU, and one, or 

 more, rarely aercral, Urge opaque nucleoli, which occaaionally exhibit 

 a carity. 



He. 4. 



OaatUaaXIIeaalr*, with tlitlr prooeem, nuclei, and nucleoli. 



e, from th* deeper part ef the crar matter of th* convolution, of the 

 ceretoilom. Ta* larrer proeee* U directed toward* the tarfaee of the oiyan ; 

 t, aaother from the eerebellam j , rf, othen from th* pottcrior horn of mr 

 aMraftheaoraalretioa of the chord. Thaee eoataln ptfnx-nt which .urroundi 

 ij!^!?~ ta *- U *" **" H"*ami the proceue. art more or lea* broken. 

 Masatted }* dlametm. (Prom Todd aad Bowman.) 



Th* else of the Derr*-o*lU rarie. rery much ; like the fibre*, they 

 OBCur a* Urge, aroall, and middle-tiled. The extreme dimenaiont of 

 tb* call* art 0-004"'-0-003"' and 05'" fl-06"'. The nuclei, which 

 forth* moat part are in proportion to the cella. meature from 0-0015"' 

 -<MH>8- ; the nucleoli 0-<XK>i'"_003"'. The nerre^ell., moreorer, 

 ^ ^^^ ooo^Qf at they are: 1, thin- or thick-walled, 

 of which tli former art found almoat wholly in the apinal chord and 

 brain; and J. M th*y are independent cellt, or are furniahed with 

 pal* prnoiMia, of which they may hare one, two, or several (uni 



rift*. 



I 



A, nmtalar aad laraw matter of the lamina) of the eerebellnm. ., rantlion 



fr>nuur ""' - 



B,Wea*la, the nattalar aad Itroa. aerrou matter In tbe dentate body 



%-. zs&KufA srz&ssrl ^ 

 < szzs^ rn ?zr C.LV, "" r r " iB " r ~ trti ^"'^ 



