LIFE IN THE INSECT WORLD. 63 



covering, remain in their chrysalis state but a 

 few weeks; but others, which are many months 

 undergoing their change, make their cocoons of 

 more substantial materials. 



Some cut off pieces of grass, of which they 

 form a little case, fastened together with silk 

 and gluten, and lined with silk. 



Some make them of pieces of chickweed, cu- 

 riously woven together ; while others use pieces 

 of leaves or thin bark. They are generally lined 

 with soft silk, so that the caterpillar has a snug 

 little nest to lie in. No doubt you have all no- 

 ticed these cocoons hanging to the branches of 

 trees, looking like rolls of dried leaves. 



Jlnna. Oh, yes, we have often seen them. 



Aunt M. They are so made as to be very 

 tough and strong. It is almost impossible to 

 tear them apart, and they are so firmly attached 

 to the branch that they cannot be shaken off. I 

 have sometimes watched them during a severe 

 winter's storm. The rain came pelting down 

 upon them, and the wind blew, until it seemed 

 as if the branches themselves would break; but, 

 although the little cocoons swung violently back- 



