THK FACE. 85 



The sixth foramen is under the basis of each pterygoid 

 process, and is therefore called the ptcri/goid, or the Vidlon* 

 foramen. It is almost hidden by the point of the petrous 

 portion of the temporal bone, and must be examined in the 

 separated bone. It is nearly equal in size to the spinous 

 hole. 



This foramen transmits a nerve that does not go out from 

 the cavity of the skull, but returns into it. The second branch 

 of the fifth pair, after passing out of the cranium, sends back, 

 through this foramen, a branch called the Vidian, which upon 

 its arrival in the cavity of the cranium, enters the temporal bone 

 by the foramen innominatum. 



Of the Face. 



The /ace is the irregular pile of bones composing the front 

 and under part of the head, and is divided into the upper and 

 lower maxillce, or jaws. 



The upper jaio consists of six bones on each side, of one 

 single bone placed in the middle, and of sixteen teeth. 



The thirteen bones are, two ossa maxillaria superiora, two 

 ossa nasi, two ossa unguis, two ossa malarum, two ossa palati, 

 two ossa spongiosa inferiora, and the vomer. 



The ossa maxillaria superiora form the principal part of the 

 cavity of the nose, with the whole lower and forepart of the 

 upper jaw, and a large proportion of the roof of the mouth. 



The ossa nasi are placed at the upper and front part of the 

 nose. 



The ossa uns-uis are at the internal angles of the orbits of 

 the eyes. 



The ossa palati in the back part of the palate, extending 

 upwards to the orbits of the eyes. 



The ossa spongiosa in the lower part of the cavity of the 

 nose ; and 



The vomer in the partition which separates the two nostrils. 



* From its reputed discoverer, Vidius, a professor al Paris, 



