672 



Jacob Parsons Schaeffer 



FroHlctl folds 

 Sufiral'ullai Jurrn-v {a<-<<'^sory cnichac] 



/ 



Frontal fiirrcnvs 



Superior hiiltnr /old ' 



Sinus maxillaris 



ht/undihuliiiii ethmoi- 

 dal,- 



S8 



Inferior hii liar /old 



l-ronln/ rt 



TTT" rf„,,, ,f/r'rfi'^'^'^''"yjr/y 



Stnus sphenoidalis 



Frontal Jurroivs 



■^gger nasi 



c„A,„ L , ' \ ^ "^ ^^"cessiis uncinatus 



Superior hnllar fyla \ 



^ infundibular fold 



Inferior bu liar J old 



39 



Frontal recess \ < '""'"i-fi'rrows 



Superior bullar fold 



Sinus sphenoidalis 



- Processus uncinatus 



Concha nasalis 

 inferint 



iO 



