,-88 



THE HIGHER ANTHROPOIDS 



tions in the suiraec ol the gra\ mutter. This appearance' of the nucleus is dis- 

 tinctive and has been olxserved thus far only \n the chimpanzee. The 

 characteristic features about it are these deep lestoon-like cur\ es w hich are so 



FIG. 261. Cm.MPANZtli. LU\ L.L Ol- rilE CEREBELLAR NUCLEL 

 CJR, Corpus Juxtarcstiluriiu'; i( i>, Inlirior (Aivbillar Prdiiiiclc; mcp, Middle Certbcll.ir Peduncle; mf. 

 Mesial Fillet; nab, Nucleus Abducentis; ndt. Nucleus Dentatus; nfg. Nucleus Fastigii; n6, Abduccns Nerve; 

 N7, Facial Nerve; i>n. Pontile Nuclei; I'NS, Pons; i»v. Pyramidal Tract; rf.f. Reticular Formation; SCH, Supe- 

 rior Cerebellar Peduncle; \ in i\. lourth Ventricle. [Accession No. 157. Section 249. Actual Size 38 X 26 mm.] 



extensive as ahiiosl to isolate portions of tlu' nut'leus li'om the mam mass ol 

 the structure. In its most primiti\c condition the dentati' nucleus has a tar 

 simpler outline with little or no tcndiMux to conxolution and mipt'ricct 

 sacculation. In its hi<i;hest morphological ck'\clopment it appears pre- 



