ii8 



THE SKULL 



[chat. 



end of the alveolar border of the maxilla projects back- 

 wards, so as to form a partial floor to its anterior extremity. 



Mn 



Fn;. 47. — Under surface of the cranium of a Dog, \. SO "^upraoccipifa' ; J-l.rO 

 exoccipital ; BO basioccipital ; Per- mastoid portion of periotic ; Ty tympanic 

 bulla; BS ba^isphenoid ; Sq zygomatic process of squamosal; Ma malar; AS 

 alisphenoid ; Ft pterj goid ; PS presDheooid ; Fr frontal ; Vcf vomer ; PI palatine ; 

 Mx maxilla ; PMx premaxilla ; /ni foramen magnum ; oc occipital condyje ; 

 // paroccipital process ; c/" condylar foramen : /lj> foramen lacerum posterius ; svi 

 stylo-mastoid foramen ; envi external auditory rneatus ; pg/ postglenoi<i foramen ; 

 i,'/ postglenoid process; _o-/" glenoid fossa ; ,//;« foram<rn lucerum medium ; 7^? 

 foramen ovale ; as p.>sterlor opening of alisphenoid can 4 ; />' foramen rottmdum 

 and anterior opening of alisphenoid canal ; sf sphenoidal fis-ure or foramen 

 lacerum anterius ; o/> optic foramen ; ///posterior palatine foramen ; rt//aiiterior 

 palatine foramen. 



In front of the orbits the face is formed above by the 



