PLATE L. NATURAL SIZE. 

 THE PHARYNX FROM BEHIND. 



In this dissection the anterior portion of the skull was detached from the posterior 

 by means of two saw cuts, beginning behind the mastoid process and running parallel 

 with the petrous portion of the temporal bone and passing through the posterior wall 

 of the jugular foramen. The basilar process of the occipital bone was then broken 

 through by a chisel cut and the anterior portion of the skull removed. 



On the right side the various structures passing up to and from the base of the 

 skull were left in their normal positions, while on the left the internal carotid, internal 



Great Pelro&al 

 lesser 



sympal 



To Itneira ouais 

 To fnesfra rofunJa 



The h'c 



1C 



carotid ple*u 

 To euitachian tulie 



Glosso-f>haryngeal 

 Arnolds nerve 



laryngeal Iiraf1c.li 

 Sup loryngeal Lrancd 



On i 



Vagus 

 Sympathetic.'' 



jugular vein and sympathetic nerves were cut away to show the structures in front of 

 them. The vagus and spinal accessory were cut and hooked aside and the digastric 

 partly cut away. 



A diagram has been introduced here to show the connections of the nerves with 

 each other and the sympathetic as they leave the skull, the hypoglossal having been 

 omitted for the sake of clearness. The distribution of the nerve of Jacobson is also 

 indicated in a diagrammatic manner. 



