314 Gardening 



(4) the butterfly or adult form. The appearance of the 

 same individual insect and its habits of feeding and living 

 are very different in the various stages of its life. 



In the northern states the cabbage butterfly lives 

 over winter in the pupal stage. The pupae that are 

 formed late in autumn remain in this stage until late in 

 the following spring. During the summer, however, the 

 butterflies emerge from pupae in from 7 to 10 days ; con- 

 sequently there are in the North at least two generations 

 in a season. 



In the southern states, where the winters are very mild, 

 there may be as many as six generations in a year ; the 

 butterflies and the caterpillars of this insect are there- 

 fore present throughout the year. 



The cabbage butterfly may be fought both in the 

 adult and in the larval stage. The following methods are 

 recommended : 



(1) Catching the butterflies. The butterflies are active 

 in their movements, but they may be captured in butter- 

 fly nets as they flit about the garden. Special efforts 

 to catch the females at the time when eggs are being 

 laid will often greatly reduce the later work of killing 

 the caterpillars. 



(2) Hand-picking the caterpillars. The caterpillars 

 are sluggish in their movements and can readily be 

 picked off the leaves and destroyed. At first they are 

 minute, and their color is almost the same as that of the 

 leaves upon which they feed, but as they grow larger they 

 are more easily seen. 



A simple means of killing the caterpillars is to drop 

 them into a dish containing water and a little kerosene. 



