276 



MAMMALIAN ANATOMY 



FIG. 198. 



SIDE VIEW. UPPER VIEW. 



POSITION OF LEFT FRONTAL BONE. 



head ; and a vertical plate, which is deeply impressed behind on the 

 .inside, to lodge a part of the brain, and deeply impressed in front on 



FIG. 199. 



Sagittal Suture. 

 Frontal. 

 Postorbital Process of Frontal. 



Anterior Fossa. 



OVactor,, I 



Alisphenoid. 



Orbitosphenoid. 



Optic Foramen. 

 Inner Wall of Sphenoidal 



Fissure. 



External Pterygoid Process 

 of Alisphenoid. 



Hamular Process of 

 Pterygoid. 



Middle 

 Pterygoid Fossa. 



For Optic Chiasma, 

 Prcsphenoid. 



External Pterygoid Fossa. 



TRANSVERSE VERTICAL SECTION OF THE SKULL THROUGH THE 

 SPHENOIDAL FISSURE, SEEN FROM BEHIND. 



