62 



NASAL FOSSAE. 



superior maxillary, lachrymal, inferior turbinated, ethmoid, palate, and 

 internal pterygoid plate of the sphenoid ; and the two fossae are sepa- 

 rated by the vomer and the perpendicular lamella of the ethmoid. 

 These may be more clearly expressed in a tabular form : 



Palate processes of superior maxillary. 

 Palate processes of palate bone. 



Each nasal fossa is divided into three irregular longitudinal passages, 

 or meatuses, by three processes of bone, which project from its outer 

 wall, the superior, middle, and inferior turbinated bones ; the supe- 



Fig.31* 



* A longitudinal section of the nasal fossae made immediately to the right of 

 the middle line, and the bony septum removed in order to shew the external 

 wall of the left fossa. 1. The frontal bone. 2. The nasal bone. 3. Thecrista 



