82 



Lessons in Zoology. 



poliahed that it b imposaible for a spider to be oanght in her 

 own web. 



Just in front of the epinnereta ia the email opening of the air- 

 tabea, and farther forward are two openinga leading to the pair of 

 aic-saca, in which the blood is pnrified aa it paaaes tbrongh delicate 

 membranona leaves. 



Fig. 6. 



The eggs of spiders are laid in dainty cobweb cases 



often found under sticks and stones, or hung up in barns. 



Some spiders carry their young about on their backs 



until the little ones can look out for themselves. 



Fig. 2 ia a magnified view of a jonng spider jnat from the egg, 

 with the firat monlt, m, still adhering to the end of the abdomen ; 

 y is the same spider, natnrsl size ; and I, the end of a leg greatl; 

 magnified to show an cater skin not yet abed. 



Fig. 6. 



Many spiders live through the winter, hiding under 

 fallen leaves and coming out the first warm day of spring. 



Suggestions for Further Ohmrvation. — How does the 

 round-web spider begin the web ? In spinning the spiral, 

 does she go from the center to the outside or from 

 the outside to the center ? Does the garden spider gen- 

 erally stay on her web ? Why does the little gray jump- 

 ing spider look so much more wide awake than others of 

 the same size ? Are there any spiders that are protected 

 by their color ? 



