'////: Mnl Til. 



341 



posteri"!- I >.ittlt.T circumscribes the orifice wliicb establishes a communica- 

 tion between these two cavities. 



Tliis partition, which continues the palate posteriorly, represents in its 

 mil form a membranous valve, oblique from above to below and before 

 to IK 'hind, much longer than it is wide, and exhibiting for study two faces 

 and four /</</ ,>. 



The iufi rir or anterior face, turned towards the mouth, shows longi- 

 tudinal folds und transverse ridges, with multitudes of orifices belonging to 

 thi siibmucous glandula). On its sides it is united to the base of the tongue 

 by means of two thick mucous columns, designated the posterior pillars 

 of the tongue. The superior or poster ior fate constitutes the anterior wall 

 of the pharynx ; it only exhibits some very slight longitudinal ridges. 



Fig. 1.VJ. 



\s i."N .1 1 1 i>! v u. <i < rioN or nil. III.M' AM> i IT; i: r\i:i oi M.CIC. 

 r liji; '_', I'n-iiiaxilla : ''. Hani palatr; 4, T.iujjin; ; .", S;|<t uin uasi ; ' 

 : 7, I'.il.itini- anh : '.'. I'tri-y^i-M IMIIH- ; In, Kpi^lotti-i : 11, I.ntrainv to tin- 

 liiiin tiil-: !'_', Arytriioiil rartila<;' ; i:t, < 'rjruiii i-.-irtihi^i' : 14. <K<>|>haguii; 

 1"'. Kn.ntal (...in- an 1 -inn-: I'l, < Vrebrum ; 17, 'r|ni-. i-ill..>inii : 1 s. < 'rrolifllmn : 

 I'. 1 , S|iiirimii| liniii- ; -J(i ? M,-.|iill.i iililnii^ata ; '_'!. t'i-r\iral li^.tnu-nt ; _'_', Sjnual 

 :tal IM.IIU ; -J4, 1'4, Athi-. : 25, 25, Iv-nt.it.i : _';. 'I'r.i. 



The two Int, ,-nl hi, rili i-x aro inserted into the wulls of the two cavities 



whieh the soft pahite sepanites. The anterior bortl> r, continOOM with th 



jialute, is attached to the palatine arch, and follous the curve described liy 



it. The /I'islt'rior bordr. the only free one. has a concave form, ami 



!y embraces the base of the epiglottis, which is most usually found 



>ed on the JM sterior surface of this curtain. This border is continued 



at itx extremite.s by two thiji prolongations, wliich can le followed on the 



il walls of the pharynx to the cusophageal infundibulum, above \\hieh 



tliey uniti' in the form of an arch. These proloii^ments are named the 



/i/liirx i if tin' *ft fxi'iit,-. in eontradistiiiction to the two mucous 



folds at tin' base i.f the tongue, \\hicli constitute, by their relation to this 



partition, veritable mif> rim- i>illtirK. This posterior border concurs to cir- 



