DESIGNATIONS FOR PLATE IV. 



1. Superior sagittal sinus of dura mater. 



2. Lateral ventricle. 



3. Cerebral hemisphere. 



4. Pia mater. 



5. Frontal bone. 



6. Cartilage of orbital wing. 



7. Mesethmoid cartilage, 



8. Cupula posterior cartilage. 

 9.'0bliquus superjjor muscle. 



10. Ophthalmic vessels and nerves. 



ir. Levator palpebrae superioris muscle. 



12. Rectus medialis muscle. 



25. Nasal tract; choana. 



26. Palatine bone. 



27. Oral cavity. 



28. Palatine nerve. 



29. Sphenopalatine ganglion. 



30. Infraorbital vein, 



31. Internal maxillary artery. 



32. Maxillary nerve. 



33. Maxilla. 



,34. Zygomatic bone. 



35. Submaxillary duct. 



36. Buccinator muscle. 



Masseter muscle. 



Parotid duct. 



Facial nerve. 



External maxillary artery and vein 



(anterior facial vein). 

 Platysma muscle.' 

 Inferior labial artery and vein. 

 Mandible. 



Genioglossus muscle. 

 Digastricus muscle. 

 Quadratus labii inferioris muscle. 

 Geniohyoideus muscle. 



