Mammalia: N« 



his System 



ro9 



C. TARSIER. 



D. MARMOSET 



Fig. 527. Diagrams of the brains of insectivores and of lower primates, viewed 

 from the left side. The figures show the increasing dominance of the centers of 

 vision over those of smell. (A) Brain of jumping shrew. (B) Brain of tree shrew. 

 (C) Brain of the primate Tarsias. (D) Brain of the marmoset. (After Smith. 

 Courtesy, Neal and Rand: "Chordate Anatomy," Philadelphia, The Blakiston 

 Company.) 



CORPORA QUADRIGEMINA, 

 PINEAL ORGAN 

 POST COMMISSURE 

 THIRD VENTRICLE^H--^ 

 MAS. INTERMEDIA^p^i •'!;,;. 

 CHORIOIDx^'i ; ; i J 



corpus yl\\[v\ 



CALLOSUM^^ ; v '• \^0* 

 FORNIX 



CEREBELLUM 



MEDULLA 



SPHENOID BONE 



^POSTERIORI L oBE OF PITUITARY 

 "ANTERIOR J 



Fig. 528. Sagittal section of the human brain-stem. (After Sobotta. Courtesy, Neal 

 and Rand: "Chordate Anatomy," Philadelphia, The Blakiston Company.) 



