THE FKONT OF THE SKULL. 161 



face is separated from the lateral wall by the superior orbital fissure 



18 



3f> 



FIG. 168. THE FRONT OF THE SKULL. 

 The nasal bones, lamina papyracea of the ethmoid, vomer, inferior concha, zygomatic, and parietal bones are 

 coloured red. The sphenoid, lacrimal, perpendicular part and middle concha of the < thmoid, a 

 mandible are coloured blue.' The maxill* are coloured yellow, 

 left uncoloured. 



The frontal and temporal bones are 



1. Mental protuberance. 



2. Body of mandible. 



3. Ramus of mandible. 



4. Anterior nasal spine. 



5. Canine fossa. 



6. Infra- orbital foramen. 



7. Zygomatico-facial foramen. 



8. Orbital surface of maxilla. 



9. Temporal fossa. 



10. Lamina papyracea of ethmoid. 



11. Superior orbital fissure. 



12. Lacrimal bone and groove. 



13. Optic foramen. 



14. Ethmoidal foramina. 



15. Temporal line. 



16. Supra-orbital notch. 



17. Glabella. 



18. Frontal tuberosity. 



19. Superciliary arch. 



20. Parietal bone. 



21. Naso-frontal suture. 



22. Pterion. 



23. Great wing of sphenoid. 



24. Orbital surface of great wing 



of sphenoid. 



25. Squamous part of the temporal. 



26. Left nasal bone. 



27. Zygomatic bone. 



28. Inferior orbital fissure. 



29. Zygomatic arch. 



30. Apertura piriformis, displaying 



nasal' septum and inferior and 

 middle conchse. 



31. Mastoid process. 



32. Incisor fossa. 



33. Angle of jaw. 



34. Mental foramen. 



35. Symphysis meiiti. 



posteriorly, anteriorly by an irregular suture between the orbital part of the 



