CHAPTER X. 



Tab. XX. — the parotid gland. 



Fig. 1. A dissection to exhibit the parotid gland. 



Fig. 2. Explains the former ; a, a, the integuments turned 

 back ; b, the parotid gland ; c, its pipe or duct passing over the 

 masseter, then perforating, d, the buccinator muscle, and opening 

 into the mouth opposite the second molar tooth. The flow 

 of saliva intothe mouth is incessant, and it is one of the most 

 useful digestive fluids. It is favourable to the maceration and 

 division of the food, it assists it in deglutition and transforma- 

 tion into chyme ; it also renders more easy the motions of the 

 tongue in speech and singing. 



