THE NASAL CAVITIES. 



moid and the vomer. The thick end of the wedge is at 

 the floor of the nose, the thin end at the upper part of 

 the nasal cavities. The outer wall of the nose inclines 

 strongly inward as it passes upward ; the septum or par- 

 tition is nearly perpendicular. The nasal cavities pre- 

 sent for examination an inner and outer wall, a floor 



Am. Jfdtal SfiTie 

 Jneitive ft* 



FIG. 31. FACIAL PORTION OF 



and a roof, an anterior and a posterior opening. The 

 inner wall is formed almost entirely of a thin, bony par- 

 tition, consisting of the vertical plate of the ethmoid and 

 the vomer. In the recent state, the triangular notch at 

 the anterior part of the septum is completed by the tri- 

 angular cartilage, which extends to the anterior open- 



