LIST OF EXPERIMENTS. 



Section Page 



3. Expt. 1. To Locate the North by the North . 



Star 3 



Expt. 2. The Movement of the Great Dipper 4 

 Expt. 3. To Locate the North by Means of 



Shadows 5 



5. Expt. 4. To Locate the South by Means of a 



Watch ..... 8 



6. Expt. 5. The Direction of Sunrise and Sunset 10 

 Expt. 6. To Record the Direction of Sunset 11 



7. Expt. 7. The Sundial 12 



8. Expt. 8. The Sand-glass .... 14 



9. Expt. 9. The Height of the Sun at Noon by 



by Shadows . . . . 15 



Expt. 10. The Height of the Sun at Noon in 



Degrees ..... 16 



10. Expt. 11. The Appearance of the Sun 



through Smoked Glass . . 19 



11. Expt. 12. The Effect of Sunlight upon Grow- 



ing Plants . . . .20 



12. Expt. 13. Fading and Bleaching ... 22 

 Expt. 14. Blue Prints of Leaves and other 



Articles ... . . .23 



14. Expt. 15. The Way Light Travels . . 26 

 Expt. 16. How to Make and Use a Pin-hole 



Camera . . . . ' . . 27 



15. Expt. 17. Reflection from Mirrors . .29 

 Expt. 18. Diffused Reflection of Light . , 31 



