Lemur 



Marmoset 



'■^*'W*i 



Mycetcs 



Baboon Macaciis 



FIGS. 4(^4 lO 504. CKOSS SECTION AT THE LEVEL OF 



These comparisons disclose the internal configuration of corresponding levels in tlie neuraxis. They disregard 

 several species. 



[1012] 



