Lateral Wall of the Cavum Nasi in Man. 



683 



is obviously great. The report shows that in a few instances the 

 reduction in ethmoidal conchae has progressed but little. The 

 number of times that three ethmoidal conchae are present in the 

 adult nose is rather low in the above report, as compared with 

 the statements of other observers. Unless one continually 



•' 7 



Concha nosalin 

 mpremit I 



Rece»9un supeitor 



* f \— S^*j — Concha arretuoriti 



■ ^"^ / \ 'q^i^ .\ Me<itii» nasi 



I '/ / jT - . I— J_ , iWf — Crula mprenia 



-rr^ 



Concha nnaalU 



■l^/p I superior 

 '\^','';'/\'~- Receism inferior 



:■■ - ' "■ /;-■/■■ / Concha nosn/fs 



■(" 



media 



■a ^ ^( 



'«2; 





Its nasi 

 nicdius 



Fig. 45 (X 10) Drawing of a frontal section through the lateral wall of the nasal 

 cavity of a 7-months fetus (series C, slide 8). The section is in the region of the 

 accessory concha of the superior meatus. It shows the well developed 'crista 

 suprema' of the concha media, also the marked curling of the latter concha. 



remember the late fetal conditions, he is apt, in many cases, not 

 to recognize the concha suprema I in the adult nose, i.e., when 

 the concha is very rudimentary. " 



I recently examined 120 adult lateral nasal walls, with especial 

 reference to the number of major ethmoidal conchae. I found 

 that 75 specimens presented three ethmoidal conchae, and the 

 remaining 45 specimens but two ethmoidal conchae, A few of the 

 specimens were suggestive of having four ethmoidal conchae. I 



