TROGLOD^TES NIGER, THE CHIMPANZEE 



597 



tcTiiU'd tlu' fDiu iilutioiu's cjuinti. Mesial to the scnsorN root ol tlir lilth tUTNC 

 arc the hbc-rs ol the motor cli\ ision ol the tri(:;emiiial luaxi' w huh sup|)l\ the 

 nuiseles of mast leat loii. Tiie ori<im ol these (il)ers is plainK seen m the luieleiis 



FIG. 266. CHIMPANZEE. LE\ EL Ol lilE E.MEKGENCE Ol IIIL lOLKlH NEK\E. 



CI N, Central Gray Matter; CIT, Central Tegmental Tract; i r. Lateral Fillet; mf. Mesial Fillet; n4. Trochlear 

 Nerve; I'D, Predorsal Bundle; pl, Posterior Longitudinal Fasciculus; i'n. Pontile Nuclei; i>v. Pyramid; ref. 

 Reticular Formation; sci', Superior Cerebellar Peduncle; SI'T, Spinothalamic Tract. [Accession No. Ij7 

 Section yOi. Actual Size 21 X i<) mm.) 



