8 TRANSFORMATIONS OF INSECTS. 
resting phenomena have been added to insect life since the 
beginning of. it. 
How clearly it is the truth that the metamorphosis of insects 
is but a progressive development of the immature into the mature 
being, can best be seen by a slight examination of some’of those 
structures which are altered during growth, and of those which 
appear during the consecutive stages of life. 
