OBSERVATION OF COMPLETE METAMORPHOSIS. 



39 



. Among the more available kinds of caterpillars for use in 

 this lesson are the following : The common green cabbage-worms ; the 

 green worm, ringed with black and spotted with yellow, that eats the 

 leaves of caraway ; and the large yellow and black one found on milk- 

 weed. The transformations of each of these can be observed in a com- 

 paratively short time if the study begins early enough in the season. 

 The autumn broods of the first two pass the winter in the pupa state. 



3. Begin a series of notes on each kind of cater- 

 pillar under observation, giving each a number and 

 numbering the notes to correspond. (See Part II, 

 Chapter III.) Begin each note with the date on 

 which it was made. Record everything that you 

 observe regarding the habits and transformations of 



FIG. 18. Larvas and pupa of a butterfly. 



the insects. Try to observe the molting of the in- 

 sects and each of the transformations. 



4. All caterpillars hatch from eggs. If you suc- 

 ceed in rearing adult insects and will keep some of 

 them caged for a time you may be able to get eggs. 



