OSTEOLOGY. 25 



The internal surface of the body presents : 



Palate process, separating the mouth from the nasal fossae; 



Orifice of antrum Higlimorianum, before alluded to ; 



Groove completing the posterior palatine canals behind; 



Deep groove in front, forming, with the inferior turbinated 

 bone and lachrymal, the lachrymal canal for lachrymo-nasal duct ; 



Inferior turbinated crest for the turbinated bone. 



The superior orbital surface presents : 



Infraorbital groove about the middle for the infraorbital 

 artery and nerve; 



Anterior dental canal, one of the divisions of the infra- 

 orbital canal, transmitting the anterior dental vessels and nerve. 



The posterior or zygomatic surface presents : 



Posterior dental canals, transmitting posterior dental nerves 

 and vessels; 



Maxillary tuberosity, articulating with the tuberosity of the 

 palate bone; 



Groove, converted into posterior palatine canal by the palate 

 bone for posterior palatine vessels and nerves. 



The nasal process projects upward to articulate with the 

 frontal bone, its external surface smooth, affording attachment 

 to several muscles, its internal surface forming part of the outer 

 wall of the nose. It presents the following: 



Superior turbinated crest, for the middle turbinated bone 

 of the ethmoid ; 



Inferior turbinated cresl below, for the inferior turbinated 

 bone; 



Groove at the posterior margin, forming part of the lachry- 

 mal canal; 



Lachrymal tubercle, at the junction of the nasal process with 

 the orbital surface. 



The malar process projects upward and outward to articu- 

 late with the malar bone. 



The palatine process projects from the internal surface of 

 the bone to form part of the roof of the mouth and the floor of 

 the nose. It presents: 



Anterior palatine canal or fossa, divided into four canals; 



Foramina of Stenson, one on either side, transmit the an- 

 terior branch of the descending palatine artery; 



Foramina of Scarpa, one in front and behind, transmit the 

 naso-palatine nerves; 



Suture in the anterior part showing original separation of 

 the incisive or intermaxillary bone; 



Posterior palatine groove for the posterior palatine vessels, 

 and anterior palatine nerves from Meckel's ganglion; 



