OUR BEST FEATURES 



of the olfactory chamber. Why is it that man 

 agrees with the Old World monkeys and anthropoid 

 apes in the numbers and arrangement both of the 

 turbinate scrolls that arise from the median 

 partition or septum and of those that spring from 

 the inner wall of the upper jaw bone? In man 



Fig. 84. Broad Forwardly-directed Nose of Human Fcetus (A) 

 (after Kollmann) and Gorilla Fcetus (B) (from 



SCHULTZ, AFTER DeNIKER). 



these delicate bony scrolls, deeply buried in 



mucous membrane, are arranged in such a way 



that three air passages, the upper, middle and 



lower meati, pass between the scrolls and allow 



the air to pass downward and backward to and 



from the pharynx. In the Old World monkeys 



and anthropoid apes the same passages are present 



as in man, but in the chimpanzee and the gorilla 



the resemblance to man is even more striking, 



since the air cavities or sinuses in the frontal, 



161 



