370 



ANATOMY OF THE CENTRAL NEEVOUS SYSTEM. 



that of the pyramids and that of the fillets. In the former are motor fibers, 

 in the latter, fibers serving to conduct sensory impressions. 



Two new fiber-areas have arisen: ventrally the pyramidal bundle and 

 dorsally from it the fillet. We will be able to follow them both higher up to 

 the region of the corpora quadrigemina. 



Fig. 235. — Schema of the course of the sensory fibers from the posterior 

 roots up to the medulla oblongata. KleinMrn-SeUen B., Lateral cerebellar tract. 

 Yorder Seitenstr., Antero-lateral column. 



The fillet contains many more fibers in adult man than appear in the 

 specimen from the fetus, just demonstrated. With the latter all the fibers 

 from the antero-lateral groimd-bundle belonging to the sensory tract are, as 



