Literature and Art 



75 



Moisture in the air 



Lesson 42 



USES OF STEAM 



DID you ever sit by the fire and watch a tea- 

 kettle of boiling water? 



Did you see the teakettle cover move up and 

 down? 



A boy once sat by the fire and watched a tea- 

 kettle in which the water was 

 boiling very fast. Steam was 

 crowding from the spout as 

 fast as it could, and every 

 little while the teakettle cover 

 would give a little hop and tiny 

 puffs of steam would come out 

 around its edges. 

 The boy wondered what made the cover move 

 and watched to see if he could find out. At last he 



Steam was crowding from 



