EMBRYOLOGIC CONSIDERATIONS 



33 



C.meci- 



C.lnf 



FIG. 9. DIAGRAM OF CORONAL SECTION THROUGH THE ANTERIOR THIRD OF 

 THE NASAL AREA OF A NINTY-FIVE-DAY EMBRYO, TO SHOW THE EXTENT 

 OF [DEVELOPMENT AND RELATIONS OF THE PROCESSUS UNCINATUS AND 

 THE BULLA ETHMOID ALIS. (Series A, No. 6, slide 11, section 6. X 10.) 

 Cr.gaL, Crista galli; B.eth., bulla ethmoidalis; Proc.unc., processus un- 



cinatus; Infund.eth., infundibulum ethmoidale; C.inf., concha inferior; 



C.med., concha media; Sept.na., septum nasi. 



