Dissection of Sheep* s Head, 211 



condyle to tlie angle of tlie mouth, is a larger nerve brancli ; 

 an inch, and a quarter below this, in a line from the par- 

 occipital process to a point about two inches along the 

 'body' of the jaw, is a duct; lastly, a quarter of an inch 

 below this duct, running in a parallel direction, is another 

 nerve. 



The fat should he now removed from the surface of the 

 Parotid Gland, and it will be best to begin between the Ear 

 and the par- occipital process, and then work forwards, being 

 specially careful (when the anterior edge of the gland is 

 reached) to work towards the mouth, not across, in order to 

 avoid dividing the nerves and duct, which mainly lie in the 

 direction of the mouth. 



The Parotid Gland will be found to be limited above by 

 the Zygomatic arch, to present a lobulated appearance, and 

 to be of a reddish brown colour. 



The Student will next trace out the nerves, &c., in the 

 following order : 



First, the large nerve twig (the second noted above), an 

 inch and a half from the top of the gland, should be cleaned 

 forwards as far as is possible*, and then should be traced 

 back in the substance of the Parotid, where it curves up- 

 wards as it gets deeper, in a direction between the Ear and the 

 condyle of the jaw ; and here the Student must be careful not to 

 injure a second nerve he will meet with deep down, coming in 

 from the direction of the angle of the jaw. When this last 

 nerve is reached, it should be traced forwards through the 

 substance of the gland, in a direction towards the angle of 

 the jaw ; it will be found to be the lowest of the four men- 

 tioned in the first instance ; and should be traced forwards 

 across the face, following close along the edge of the ramus. 

 These two nerves thus traced out are the two terminal 



* The anterior branches of it are frequently removed with the skin. 



