810 



HEARING, SMELL, AND TASTE. 



their intimate connection with the tactile sense, to guide the tongue in its 

 variable and complicated movements. 



FIG. 202. 



a b A c a 



A, vertical section near the middle of the dorsal surface of the tongue ; a, a, fungiform papillae ; 

 b, filiform papillae, with their hair-like processes; c, similar ones deprived of their epithelium, 

 magnified 2 diameters; B, filiform compound papillae ; a, artery; v, vein ; c, capillary loops of the 

 secondary papillae ; 6, line of basement-membrane ; d, secondary papillae, deprived of e, e, the 

 epithelium ; /, hair-like processes of epithelium capping the simple papillae, magnified 25 diam- 

 eters; g, separated nucleated particles of epithelium, magnified 300 diameters. 1, 2, hairs found 

 on the surface of the tongue; 3, 4, 5, ends of hair-iike epithelial processes, showing varieties in 

 the imbricated arrangement of the particles, but in all a coalescence of the particles toward the 

 point; 5 encloses a soft hair, magnified 160 diameters. (After Todd and Bowman.) 



FIG. 203. 



Gustatory Bulbs from the Lateral Gustatory Organ of the Rabbit. (Magnified 450 diameters.) 



732. The ultimate terminations of the gustatory nerves are yet envel- 

 oped in obscurity. According to Engelmann, the glosso-pharyngeal nerves 



