THE TONGUE. 



FIG. 181. SECTION OF 



MUCOUS MEMBRANE 

 OF MOUTH, SHOWING 

 THEEE MICROSCOPIC 

 PAPILLAE AND STRA- 

 TIFIED EPITHELIUM. 

 THE BLOOD-VESSELS 

 HAVE BEEN INJECTED. 



(Tolclt.) 



FIG. 182. SECTION OF CIRCUMVALLATE PAPILLA, 



HUMAN. THE FIGURE INCLUDES ONE SIDE OF THE 

 PAPILLA AND THE ADJOINING PART OF THE 



VALLUM. (Magnified 150 diameters.) (Heitzmann.) 

 E. epithelium ; G, taste-bud ; C, corium with injected 

 blood-vessels ; M, gland with duct. 



FIG. 183. SECTION OF FUNGIFORM 

 PAPILLA, HUMAN. (Heitzmann.) 



E, epithelium ; C, corium ; Z, lymphoid 

 tissue ; M, muscular fibres of tongue. 



FIG. 184. SECTION OF TWO 



FILIFORM PAPILLA, HUMAN. 



(Heitzmann.) (Letters as in 

 previous figure. ) 



