TROGLODYTES NIGER, HIE CHIMPANZEE 



589 



rniiiuntl\ as a saccular stnicturc with some roseml^Iaiuc to the inferior 

 i>h\ar\ body. The degree ol eornohition in the wall ol the dentate nueleus 

 \aries eonsidi'ral)l\ as the result ol the eoinplixit \ ol its organization. In all 



FIG. 262. CHIMP.ANZEE. LEVEL Ol IHL CEREBELLAR NUCLEL 



CTT, Ontral Tcijrncntal Tnict; cow. Ventral Spinocerebellar Tract; ici', Inferior Cerebellar Peduncle; mf. 

 Mesial Fillet; ndt. Cerebellar Nuclei, Lateral Group; ncl, Cerebellar Nuclei, .Mesial Group; fx. Pontile 

 Nuclei; pv. Pyramid; kst. Rubrospinal Tract; sft. Spinothalamic Tract; yen iv. Fourth Ventricle; ver. 

 Vermis Cerebclli. (Accession No. i ,— . Section 310. Actual Size 30 X 32 mm.) 



of the more highl\ diil(.rentiated species the convolution in the nucleus is 

 pronounced. The chimpanzee stands intermediate- between the two extremes 



