940 



DECUSSATION OF PYRAMIDS. [BOOK in. 



m.p.n 



ar.C.i 



m /P- n -e.p.n. 



XII 



-fret. 



Py.dec. 



bl.e. 



ol.a 



fa.i! ( n.a.. 



'fa.e. 



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

 DIFFERENT LEVELS. (Sherrington). 



