MYCETES SENICULUS 



215 



primitive responsibility 111 the direction of locomotion. This iunction, in 

 part at least, is now delegated to the more eflectively organized receptive 

 organ, the hand. 



FIG. no. MYCETES SENICULUS. LEVEL OF THE CAUDAL EXTREMITY OF THE 



INFERIOR OLIVE. 



CB, Column of Burdach; cen, Central Gray Matter; dt, Deiterso-spinal Tract; fle. Dorsal Spinocerebellar 

 Tract; cow. Ventral Spinocerebellar Tract; hel, Spino-olivary Tract of Helweg; lo, Inferior Olive; MP, 

 Mesial Fillet; nb. Nucleus of Burdach; nbs, Nucleus of Bischoff; nbl. Nucleus of Blumenau; ng, Nucleus of 

 Goll; NR, Nucleus of Rolando; pl, Posterior Longitudinal Fasciculus; pd, Predorsal Bundle; pv, Pyramid; 

 REF, Reticular Formation; rst, Rubrospinal Tract; spt. Spinothalamic Tract; trd, Descending Trigeminal 

 Tract. [Accession No. 148. Section 85. Actual Size 11 X 7 mm.| 



LE\EL OF THE CAUDAL E.XTREMITY OF THE INFERIOR OLIVE (FIG. I 1 8) 



At the level ol the caudal extremity of the inferior olive, a clearer impres- 

 sion is obtained of the rehitive size of the pyramidal system (Py). There 



