THE EAR. 



sions conveyed to us by the sense of hearing. 

 These impressions are very varied in their charac- 

 ter, and excite equally varied emotions in the 

 mind, from the rush of the summer breeze 

 through the dancing leaves, to the peal of the 

 thunder storm, and the softest breathing of "dis- 

 tant music." 



Questions. 



What is the principal agent in tasting ? 



Can the tongue be moved in all directions, and its shape 

 varied ? 



What is the surface of the tongue covered with ? 



Does the sense of taste reside in the papillae ? 



Is it necessary that bodies should be dissolved to enable us 

 to taste them ? 



What does it mean when we say that things have a 

 smell? 



How is it that smell gets into the nose ? 



In what membrane does the nerve of smell expand itself? 



Why is it that we are liable to bleedings from the nose ? 



Why do we taste and smell any thing fresh to us, before 

 eating it? 



What is sound, and how is it conveyed to the ear ? 



Can you give any account of the way sound passes to the 

 nerve of hearing ? 



