THE NASAL CAVITIES AND OLFACTORY STRUCTURES. 27 



in size, and is the vestige of a larger process, which in lower 

 primates enters into the formation of the inferior margin of the 

 orbit. This pars facialis sometimes occurs in man (Fig. 20). The 

 position of the infundibulum to the lachrymal is shown in Fig. 2 ; 

 it is seen to lie entirely in the lateral mass of the ethmoid behind 

 the lachrymal. Occasionally the frontal and superior maxillary 

 bones may articulate in an interval between the lachrymal in 

 front and lateral mass of the ethmoid behind. 



