940 



DECUSSATION OF PYKAMIDS. 



m.p.n. 



p.h. 

 s,9- 



[BOOK in. 



c.r.C.i 



IXOL. 



e.p.n. 

 r (m) 



4 



"VP-"-e,.p.n, 



XII 



E..J...f,reb. 



Py.dec. 



XII 



n.a 



f.a.e 



a.l.n. 



fa.il 'n.a. 



6 



FIG. 109. TRANSVERSE DORSOVENTRAL SECTIONS OF THE BULB (MAN) AT 

 DIFFERENT LEVELS. (Sherrington.) 



