36 THE BUTTERFLY VIVARIUM. 



monstrations of the extraordinary ways and powers 

 of Nature ; and we still preserve, when speaking of 

 them scientifically, the energetic term " metamor- 

 phosis," which expresses the idea of a sudden and 

 wonderful change, though we can no longer consider 

 such transformations in any other light than as a 

 series of developments, having direct analogy with 

 corresponding developments in other classes of 

 animals, however they may differ from them in 

 certain striking peculiarities. 



