42 



five pounds of flour through a cheesecloth bag- upon the infested plants. 

 The fine powder of the mixture fills the breathing pores, so that the air 

 cannot get into the interior of the body, and the worm is suffocated 



How strange and eventful is the life of this butterfly ! Strange, 

 because, beginning life as a beautiful Q^^i which is easily broken, it 

 soon becomes a sixteen-legged worm-like creature, which, after growing 

 and moulting, reaches a certain size ; then it changes into a passive 

 body resembling an Egyptian mummy ; which after remaining in this 

 state for a definite time, bursts its case, and comes out a dainty, white, 

 four-winged insect, flitting hither and thither among the flowers and 

 sipping their sweets Eventful, because it is ever exposed to danger 

 from the attacks of parasitic insects, birds, and other animals, including 

 man himself, and from the changing conditions of heat and cold, rain, 

 and snow. 



Fi>,^. 53. The story of a e;ibba'j:e-buttert1y for a year. There 

 are tliree broods or generations. 



