EMBRYOLOGIC CONSIDERATIONS 



41 



FIG. 12. DIAGRAM DRAWN FROM A CORONAL SECTION NEAR THE]MIDPOINT 

 ANTEROPOSTERIORLY OF THE LATERAL NASAL WALL. (Series A, No. 12 

 (one-hundred-and-twenty-one-day fetus), slide 8, section 1. X 6.) 

 B.eth., Bulla ethmoidalis; C.med., concha media; Proc.unc., processus 



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



Sept.na., septum nasi. 



