b. How does the direction of sunrise and sun- 

 set vary? 



Experiment 6. The record of directions. 



7. Telling time by the sun. 



a. The Sundial. 



Experiment 7. Horizontal and vertical 

 sundials. 



8. Other ways of telling time. 



Experiment 8. The sand glass and the 

 sand wheel. 



9. The height of the sun at noon. 



a. The height of the sun at noon today. 



Experiment '9. The height of the sun by 

 means of a shadow. 



b. The variation in the height of the sun at 

 noon. 



Experiment 10. A record of the height 



of the sun. The altitude measurer. 

 (These subjects, The Sun, Stars, and Planets, 

 are continued in the work for the sixth grade.) 



LIGHT. V. 



10. The light \ve receive from the sun. 



a. The variation in the amount of light. 



Experiment 11. Look at the sun through 



smoked glass. 

 11* The sunlight makes plants green. 



Experiment 12. Effect of sunlight on 

 growing plants* 



