TROGLODYTES NIGER, THE CHIMPANZEE 



587 



tlu' prfscnct.' ol llu- two lariii' hiUial riTcsscs, contu'ctccl with each ol Which 

 is the dorsolateral iTiiiiu'iKc which foiist itutcs the tubcrniluin acusticum. 

 Entering inlu these eminences are the iibers of the acoustic cli\ision of 



IIG. 260. CHIMPANZEE. LE\EL Ol rilE CEREBELLAR M CLEI. 



DT, Dciters' Nucleus; iti', Inferior OrelKlIar Peduncle; mf, Mesial Fillet; ndt. Dentate Nucleus; NT, Facial 

 Nerve; n8. Auditory Nerve; I'D, Fasciculus Prcdorsalis; pl. Fasciculus Longitudinalis Posterior; pns, Pons; 

 pv. Pyramidal Tract; ref, Keticular Formation; run, Tubcrculum Acusticum; ver. Vermis. [Accession No. 

 157. Section 270. Actual Size 32 X 23 mm.) Figures 260, 261 and 262 are introduced to illustrate character 

 and extent of the cerebellar nuclei. 



tile eighth ner\i'. 1 he a|jj)earance ol the dentate nucleus (NDt) is ot partic- 

 ular nitcrcst. Its general oulhne gives the impression of a definite i'cs- 

 tooning in the nuclear substance whicii has assumed the ajjpearancc of a 

 thin ribbon of gray matter di|)pmg dow n m many irregular depressions of 

 considerable length. Each such depression is characterized by lesser undula- 



