TROGLODYTES GORILLA 



677 



These are the inferior eolh'euh fIC). Both in size and in eomplexity of 

 their stratiheation. the eolheuh in the ^()rl^a show some rechietion as com- 

 pared with the lower and intermediate primates. This fact is consonant with 



MG. 307. GORILLA. LEVEL OF THE E.MERGENCE Oh THE TROCHLEAR NERVE. 



CEN, Central Gray Matter; crir. Central Tegmental Tract; lf. Lateral Fillet; mf, Mesial Fillet; N4,TrocliIcar 

 Nerve; pr>, Prcdorsal Bundle; pl, Posterior LonKituJinal Fasciculus; px, Pontile Nuclei; py, Pyramid; ref. 

 Reticular Formation; rst. Rubrospinal Tract; scp, Superior Cerebellar Peduncle; spt. Spinothalamic Tract. 

 (Accession No. J. D. Section 7^4. Actual Size 23 X 20 mm.] 



