414 



S. WALTER RANSON 



With the exception of figures .5 and \), which are from I'al-Weigerl preparations, 

 the drawings were made from jjyridine-silver preparations. All drawings were 

 made with a Leitz microscope. 



Fig. 1 Medulla oblongata, upper end of decussation of the pyramids. 

 Ocu. 0, Obj. 3. 



Fig. 2 Medulla oblongata, middle of the decussation of the pyramids. Ocu. 

 0, Obj. 3. 



decussation. The pyramids have disappeared from the ventral 

 surface of the medulla; at a some of the lowest decussating fibers 

 are indicated. The two large pyramidal fasciculi lie near the 

 posterior median septum. 



The pyramidal decussation differs from that in man, in that 

 the fibers go over into the posterior instead of the lateral funiculus. 



