PURE AIR. 273 



How often should we wash ourselves 1 



What should all boys be taught? 



Should a child ever go into the water alone I 



Mention some of the things that should be attended to in 

 bathing. 



What should we be particularly attentive to in our dress ? 



What means should be taken to keep rooms clean and 

 sweet ? 



LESSON XXV. 



OF PURE AIR. 



HEALTH is frequently injured by breathing 

 impure air. People who are employed in pre- 

 paring metals, especially lead and quicksilver, are 

 generally pale and emaciated, and die young, 

 because the vapours which proceed from the sub- 

 stances on which they work are noxious, and, by 

 being drawn into their lungs, poison them by de- 

 grees. Painters are often afflicted with palsy of 

 the arms, and dreadful attacks of cholrc, from in- 

 haling the effluvium of white lead when they are 

 painting. 



How uncomfortable are our feelings when shut 

 up in a close room with several other persons. 

 We become hot, uneasy, drowsy, stupid, and un- 

 willing to move: but let us escape from it, and get 

 into the open air, and what a delightful change 

 takes place. We shake off our lethargy, are lively 

 and animated, and wonderfully refreshed. How do 



