2 3 o MINUTE MARVELS OF NATURE 



magnified view of the tips of a pair of the wings of 

 one of the more delicate forms, which, although the 



Fig- i,S3- Head of the larva of a dragon-fly. 

 Magnified to show the mask and true jaws below 



nervures are frail, are strengthened one with 

 another until they can be used with considerable 

 muscular force, and so attain the speed necessary 



