366 



THE INTERMEDIATE PREMATES 



l)t't\\c-c-n tlu' (.'(.■lit ral and clnrsal as|)i'(.'ts n{ the a\is, ami is i.'iiniU'i.-te'(l lati_aall\ 

 l)\ an rliini^atfcl, istlmuis-likc aira with a sonu'wiiat (.ApancU'd clmsal linrii 

 whose pnipluTN IS suiTDUiidc'cl l)\ a honing iumhis la\rr ol ^laN matter, 



y^i^; 



IK,. I~l. MACACLS. LE\ EI. Ol llll. i"iK\\lll)\l DECl SSATION. 



( IS. tAiili.il Gr;i\ M;ai>r; c.li. Column ..I Bunlaclii ..., C.ilunin ..I G. .1! ; I>l, I Xitci s..-.|>in.il IiaLt; I Lr. 

 DoismI S|.iii,.crirlHll,ii liact; .,(ju. \rnt.;il S|)in. .ic i . brILn Tr.ict, nil. Spin..-, ,liv:n \ Tr;n. t .,1 I klucc;; 

 NK, N,Rkus..ri-!..l;inci..: i-. , P\r;iinid; |.^.\, P\ i.niil<i.,l Due usviti..n ; lu i . Kuticul;,i F,.i ni,it i<.n; km. Rubr..- 

 spin.,! Tr.icl; sim. Spin, .t lialamic Tr.nl ; i Ki>. [Xsoiulin- Ii i-iniln.il Ti:Kt; \i \. \',nlr:il Gi:iv C.liinin. 

 |Accrsvi..n N... I4<). S<-i.li..n i... ActiKil Si/a' \n • - niiii,| 



the sLiljstant la ^clatinosa tn^ciiiini (NR). The narrow, isthnnis-liko hand 

 ol ,i:;ra\ matter (.■oniu\-t mii this latter with tlu' eeaitral .^rax matter lorms 

 the eer\ i\ ol the dorsal horn. Dorsal to thi' eentral ,^ra\ matter (Cen), 

 the eer\ i\ o| the dorsal horn and the substantia irelatmosa tnuemmi is the 



