go ATMOSPHERE. [Lesson XVT. 



The air inhaled is not the gas 

 That from a thousand lungs reek back to thine, 

 Sated with exhalations rank and fell, 

 Which, drunk, would poison the balsamic blood, 

 And rouse the heart to ev'ry fever's rape- 

 But air that trembling floats from hill to hill, 

 From vale to mountain, with inccstai.t change 

 Of purest element. 



LESSON 



