PLATE CCXXXV. 



GROOVE FOR SUPERIOR LONGITUDINAL SINUS 

 GROOVE FOR ANTERIOR MENINGEAL ARTERY 



FORAMEN CAECUM 

 — CRISTA GALLI 



SLIT FOR NASAL NERVE 

 GROOVE FOR NASAL NERVE 



ANTERIOR ETHMOIDAL FORAMEN 

 ORIFICES FOR OLFACTORY NERVES 

 POSTERIOR ETHMOIDAL FORAMEN 



ETHMOIDAL SPINE 

 OLFACTORY GROOVES 



OPTIC FORAMEN 



OPTIC GROOVE 

 OLIVARY PROCESS 

 ANTERIOR CLINOID PROCESS 

 MIDDLE CLINOID PROCESS 



POSTERIOR CLINOID PROCESS 

 GROOVE FOR SIXTH NERVE 

 MIDDLE LACERATED FORAMEN 

 ORIFICE OF CAROTID CANAL 

 DEPRESSION FOR GASSERIAN GANGLION 



NTERNAL AUDITORY MEATUS 

 SLIT FOR DURA MATER 

 SUPERIOR PETROSAL GROOVE 

 FORAMEN LACERUM POSTERIUS 

 ANTERIOR CONDYLOID FORAMEN 

 AQUAEOUCTUS VESTIBULI 



_- POSTERIOR CONDYLOID FORAMEN 



MASTOID FORAMEN 



- POSTERIOR MENINGEAL GROOVES 



Showing Foramina at the Base^of the Skull. 

 440 



