THE BONES OF THE HEAD 



135 



Anterior Ethmoidal Canal 

 Posterior Ethmoidal Canal 

 Supra-orbital Notch 



Optic Foramen 

 [^enoidal Fissure 



Sphen. Fissure 

 Optic Foramen 



Subnasal Point 



Mental Foramen' 



Symphys 

 Mental Protuberance 



Fig. 80.- 



Gnathlon 



-The Anterior Region of the Skull (Norma Frontalis et 

 Facialis). 

 I, Nasal. II, Nas. Proc. of Sup. Maxilla. Ill, LachrvinaL IV, Ethmoid 

 (Os Planum). V, Orbital Proc. of Malar. VI, Orb. Surf, of Great Wing of 

 Sphenoid. VII, Orb. Plate of Frontal. VIII, Orb. Surf, of Sup. Maxilla. 

 IX Frontal. I X', Temp. Div. of Frontal. X, Parietal. XI, Great Wing 

 of Sphenoid. XII, Squam. Port, of Temporal. XIII, Malar. XIV, Inf. 

 Maxilla. XV, Temporal Fossa. 



