A CLINICAL STUDY OF THE SKULL. 



ZO 



Ottawa; 1188, 1063, German; 746, Minitari ; 947, Arauniau) the 

 vaginals, aud sphenoidal processes of the palatal bones do not reach 

 the vomer, or may be entirely absent. 



From this condition of retained juvenile feature the most char- 

 acteristic departure is to have the under surface of the body of the 

 sphenoid bone slightly rugose (757, Otoe; 1233, Miami; 19, Ben- 

 galee; 693, Narragansett). 



A few examples may be named in which the surface is moder- 

 ately convex. On the other hand, it may be flat. The variety last 

 named includes a large number of examples which are of especial 

 interest, since no civilized race is represented (53 ; 651, Arauca- 

 nian; 1227, Blackfoot ; 1451, Australian; 1029, Fiji; 1342, bas- 

 tard Malay ; 435, Malay; 990, Maya ; 1315, N. A. Indian; 730, 

 Seminole; 935, Narragansett; 204, Chinook; 605 Sioux; 142, 905, 

 ^13, 973, 654, Negro). 



4 



Fig. 4. — The posterula of an adult North American Indian (No. 1322, A. 

 N. S.), showing a median vomero-basilur foramen, in addition to the two 

 lateral foramina. 



1. Lateral superior vomero-basilar foramen. 



2. Vaginal process. 



3. Lateral inferior vomero-basilar foramen. 



4. Palatal bone. 



5. Vomer. 



6. Median vomero-basilar foramen. 



