IC /> PHYSIOLOGY AND MORPHOLOGY OF ANIMALS. 



there is in that case a combination of pleasant sensations. 

 For example, what we call the taste of a ripe peach is 

 first the delicious softness and juiciness. This is a 

 feeling. Then the agreeable combination of acid and 

 sweet. This is taste proper. And last, the whole is 



glorified and crowned 

 by the exquisite fla- 

 vor, which, as already 

 shown, is a smell. 



Organ of Taste. 

 — As thus limited, the 

 organ of taste is the 

 tongue, especially the 

 back part of the tongue 

 and the adjacent parts 

 of the throat, and still 

 more especially certain 

 large papillae in that 

 part of the tongue (Fig. 

 125). There are two 

 kinds of papillae on the 

 tongue — one kind large 

 and flat, mushroom- 

 like,* the other small 

 and conical. Those of 

 the one kind are found 

 only on the back part 

 of the tongue and are 

 taste papillae; those of the other are found in every part, 

 but mainly near the tip, and are tactile papillae. There 

 are three kinds of nerves distributed to this nimble little 

 organ : (1) A branch of the fifth pair (Fig. 33, 5, page 51). 

 This gives common sensation. It is distributed to all 



Fig. 125. — Interior of mouth, showing the 

 papillee of the tongue and the distribu- 

 tion of the nerves of taste : _/", fungiform 

 papilla. (After Huxley.) 



* These are again subdivided into fungiform and circumvallate. 



