128 THE NATURE STUDY COURSE. 



clover leaves, may be sought for. It would be a mistake to 

 announce the eggs in advance of their appearance if they were 

 likely to be observed without special effort. 



1. Study one of these eggs under the lens and make an enlarged, 

 colored drawing of it. 



2. What change of color takes place in them on the second day ? 



3. On the third day what color are they ? 



4. Before evening or on the fourth day note their color. 



5. On the fourth or fifth day watch for a pair of black jaws. What 

 are they doing ? 



6. How long does it take a Clouded Sulphur to eat its way out of the 

 shell ? 



7- What does it do with its empty shell ? 



8. Measure a newly hatched larva. 



9. Describe its colors. 



10. Using a lens observe the spots and hairs on its body. 



1 1 . Where on the leaf does it begin to feed ? 



12. What path does it make ? 



13. Does it always remain out at the edge of the leaf? 



14. What color is its body now ? 



15. For three days it has been feeding and growing. Why has it 

 suddenly stopped and gathered itself into that little bunch ? 



16. It seems to be getting two heads. What does that mean? 



17. What change has the moult made in its color? 



18. Measure it now. How much larger is it? 



19. How long time between the first and second moult ? 



20. What changes occur with the second moult ? 



21. Going into a third moult ! How long since the second ? 



22. They are getting these leaves pretty badly eaten. Let us change 

 them to a fresh plant by nipping off the leaf they are resting upon and 

 placing it among the leaves on another plant. 



23. The third moult is over. They are feeding again. How Urge 

 are the}' now and what color changes have occurred ? 



24. Still another easting off! What about the colors and size now? 



25. Again they have ceased feeding and have begun wandering as 

 though in search of something. 



