THE BRAIN OF MODERN MAN 



833 



Lateral to t lir ix-ticular lonnation and ap|)arcntl\- c'nK'rjj;inii; Iroin it is a 

 large pnitubiTanci', {\\v iiicsial gciiKulatc hoclx (Mgh) connfctcd with 

 tlic pathway ol licarmg. It aj^prars to incn.'asc j)i()gi'f,ssi\t'l\' in si/f through 



FIG. 355. MAN. LEVEL OI- IHE OPTIC CHIASM. 



CIN, Internal CapsiiU-; <:i'H, Corpus 1 iypotlialaniiciini; 1 ui", Dcscrndins Pillars of the Fornix; i rs, Fields of 

 Forel; gli>. Globus Pallidus; nlt. Lateral Nucleus of the Thalamus; N.\n, Mesial Nucleus of the Thalamus; 

 NLi, Internal Lateral Nucleus of the Thalamus; oi't. Optic Tract; opx. Optic (Chiasm; in i. Putamen; V3, 

 Third Ventricle. [Accession .Man. Section C 79<). Actual Size 64 X 2(j mm.] 



the pniiiatc series and in man has hirger chinensions t han m any ol the apes. 

 Betweiai tlu' two peduneles is a wide opt ico-|)edLineiilai" spaee wiiieli 

 eontains the mainmillarv bodies, the postinlnndihular eniinenee, the 

 attaehnienl ol the inhindibular stalk and the tuber einereum. All of these 

 are more jjroniineiit than thi' lorri'sponding struetures in lower primate 



