THE SKULL. 



33 



/ 



cover of the processus frontalis, connects the hindermost transverse 

 portion of the nasal cartilage with the cartilage which runs forwards 

 from the suspensorium upon the anterior arm of the pterygoid. 



11. The nasal bones, ossa fronto-nasalia, Dugcs (Figs, i o, i jfn). 



CvLvier, frontale anteriiis, I. r.,h. — Dugès, n. 2. — Meckel, nasal bone. — 

 — Parker and Bettany, I. c, nasal bones. 



These flat^ triangular bones, which rest upon the nasal cartilages 



[ti), assist to bound the orbital cavities in fi'ont, and are connected 



by their external angles with the maxillary bone on either side^. 



12. The premaxillary bones, ossa i?/fer///axi//aria (Fi^s. lo, ii, 

 17, 19 /). 



Cuvier, I.e., p. 388, PI. XXIV, Figs, i, 2 f f. — Dugès, n. 3. — Parker and 

 Bettany, I.e., premaxillary bones. 



These two bones are united 

 in the middle line : each consists 

 of a tooth-supporting portion, 

 which completes the maxillary 

 arch, and an ascending pro- 

 cess, to the apex of which the 

 nasal cartilage is articulated 

 by a movable joint (an). As 

 muscles are attached to this 

 process, it becomes a lever, 

 by which movements are ef- 

 fected. 



skill! of liana cscnli'iifa, seen from below, tvice 

 natural size. 



13. The palatine bones, 



ossa palatlna (Figs. 19, 10 pi). 



Cuvier, /. ('., p. 389, PL XXIV, 

 Figs. I, 2 i i. — Dugès, n. 7. — 

 Parker and Bettany, I.e., pala- 

 tine bones. 



Are two transverse bony 

 bars, situated under the anterior 

 portion of the sphenethnioid 

 bone on either side : each ex- 

 tends outwards from the apex 

 of the parasphenoid to the maxillary bone, where this gives off its 

 ascending process to the nasal bone. 



* For OS nasale, Cuvier {I. c, g), cornet (concha), Dugès, see cartilaginous nasal 

 capsule, p. 27. 



D 



