130 



COMPARATIVE ANATOMY. 



FIG. 104. THE ENTIKE Nr.uvors SYSTEM OK TIIK Fi:m;. i After A. Ki-kn-.) 



(From the ventral side.) 



Hi', cereliral hemispheres (jirosencephalon) ; Lop, optic lobes (mesencephalon) ; J/, 

 spinal cord ; Ml to M in, spiiuil nerves, which are connected at <SJ/ Iiy liraiuliis 

 (ranii coiiimuiiioantes \villi the i^mslia (.S7 to H10] of the sympathetic (,V) ; Xn, 

 femoral uerve ; ^V/, sciatic nerve ; 7 to A', first to tenth cranial nerves (for their 

 names, see text) ; ('!, ganglia of the va.uns ; /';/, (Jasserian giiiiglion ; o, eye ; J, 

 nasal sac ; I'n to I'r, tin- (lillereiit. lirandies ol' the trigeminal ; /', facial nerve ; 

 Vs, connection of the sympathetic with the (Jasserian ganglion ; XI to XJt, the 

 different brandies of the vagus. Some of the fibres of the sympathetic should 

 be shown accompanying the vagus peripherally. 



