314 



THE HUMAN BODY. 



the tongue. They are easily recognized on the living 

 tongue by their bright red color. The filiform papilla, 

 most numerous and smallest, are scattered all over the dor- 



Fio. 95. The upper surface of the tongue with part of the pillars of the fauces 

 and the tonsils. 1, 2, circumvallate papillae; 3, fungiform papillae; 4, filiform 

 papillae; 6, raucous glands; 7, tonsils; 8, part of epiglottis. 



sum of the tongue except near its base. Each is a conical 

 eminence covered by a thick horny layer of epithelium. 

 It is these papillas which are so highly developed on the 

 tongues of Carnivora, and serve them to scrape bones clean 



