THE ORGANS OF SPECIAL SENSE 



265 



fancied connection with the sense of taste, is the nerve of 

 common sensation for the tongue. The ninth or glosso- 



FIG. 140. The upper surface of the tongue, with the fauces and tonsils : 

 I, I, Circumvallate papillae, in front of 2, the foramen caecum ; 3, fungiform 

 papillae ; 4, filiform and corneal papillae ; 5, transverse and oblique rugae ; 6, 

 mucous glands at the base of the tongue and in the fauces ; 7, tonsils ; 8, 

 part of the epiglottis ; 9, median glosso-epiglottidean fold (frasnum epi- 

 glottidis) (from Sappey). 



pharyngeal nerve is the special nerve of taste, and is dis- 

 tributed to the posterior third of the organ; the chorda 

 tympani supplies the anterior two-thirds. The twelfth, 



