THE CLOUDED SULPHUK BUTTERFLY. 27 



just how to make the threads ; and presently, seizing the loop 

 in its jaws, manages to throw it partly over the head, and by a 

 great effort works it entirely over and down the back to the 

 foui'th segment, and stops exhausted. Some hours pass with- 

 out any motion, when suddenly the skin splits on the back of 

 the anterior segments and is rapidly shuffled off, exposing the 

 chrysalis which rests secure on its girdle of silk." About ten 

 days later the butterfly emerges. Except in the far north, 

 there appear^ to be three broods of the butterflies each season. 



These butterflies may often be seen during summer gather- 

 ing in great flocks by muddy pools in the road, where they 

 come to drink. They also visit clover blossoms and many 

 other flowers to sip the nectar through their slender tongues. 



