234 THE FROG— THE PLATANA 



(d) The glosso-pharjTigeal nerve and the vagus (or pneumogastric) nerve. 

 These arise together and pass through a common aperture behind the 

 auditory capsule. The glosso-pharyngeal passes in front of the hypo- 

 glossal nerve and extends along the base of the tongue. The vagus, 

 after giving off branches to the dorsal muscles, reaches the walls of 

 the pharynx and runs obliquely backwards to supply the pharynx, 

 heart, lungs, and stomach. 



Make a complete sketch showing the brain and the above-mentioned cranial 

 nerves. (See Fig. 84, page 232.) 



