158 NATURE STUDY BY GRADES 



Note how the gas is turned on and off. Visit the gas works, 

 and study them. What danger is there in blowing out the 

 gas and going to bed ? Compare the light of a gas jet with 

 that of a lamp or candle. 



How does electricity get into our houses? Show and ex- 

 plain to the children, where possible, the wiring for electric 

 lights. Turn off and on the lights. Take apart the switch, 

 and show the pupils how the circuit is broken or completed, 

 as we turn off or on the lights. Compare the intensity of 

 the electric light with that of others. Call attention to its 

 many conveniences and safety. Note how easily and quickly 

 a large building is lighted and its lights extinguished, when 

 electricity is used. 



Compare with primitive methods of lighting, when the log 

 fire or pine knot furnished the home its light. The first 

 lamps were supplied with a wick reaching into a bowl of oil, 

 the upper end lying in a groove and reaching somewhat be- 

 yond the edge of the bowl. Follow the evolution of lights 

 for our homes. 



LESSON XXXII 

 BREAD MAKING 



THE SONG or THE WHEAT 



Back of the bread is the snowy flour ; 



Back of the flour is the mill ; 

 Back of the mill the growing wheat 



Nods on the breezy hill ; 

 Over the wheat is the glowing sun 



Ripening the heart of the grain ; 

 Above the sun is the gracious God, 



Sending the sunlight and rain. 



SELECTED. 



