TROGLODYTES NIGEK, Mil; CHIMPANZEE 



579 



The most |)iiin(iuiuctl chan^H's occur in the dorsal held and nia\ he 

 ascnhed to the expansion ol the dorsal st-nsor\ inieh'i. 'I'he nucleus oi' 

 Coll (NG) has considcrabl\ increased in size and is still surroLinded by 



FIG. 2- 



eiiiMi' wziil;. lfn ul oi- cai dal i-.xiKiMin oi i\i i.kiok oi.i\ e. 



cii, CdIimiui of Biirclacli; CEN, Q-ntral Gray Matter; co, Column of Goll; dt, Dcitcrso-splnal Tract; fai, 

 Internal Arcuate Fibers; i le, Dorsal Spinocerebellar Tract; c;o\v, Ventral Spinocerebellar Tract; IIEL, Spino- 

 olivary Tract of I leKveg; lo, Inferior Olive; \ii, Nucleus of Burdach; ng, Nucleus of Goll; Miv, I lypoglossal 

 Nucleus; M<, Nucleus of Rolando; i-n, Predorsal Bundle; PL, Posterior Longitudinal Fasciculus; i'\. Pyra- 

 mid; REi , Reticular Formation; Hsr, Rubrospinal Tract; SPT, Spinothalamic Tract; tkd. Descending 

 Trigeminal Tract. |Aeeession No. i^r. Section H2. Actual Size 13 X 10 mm.| 



