i90 



sour BERN FIELD CROPS 



of which usually 

 feed upon corn. 

 The first and second 

 gejierations feed on 

 the young leaves in 

 the bud or growing 

 part of the corn 

 plant ; the third 

 generation prej-s 

 chiefly upon the 

 ears of corn in the 

 green or roasting- 

 ear condition, when 

 ^"^^^ the insect is known 



^m ' as the corn ear- 



worm or roasting 

 ear-worm. This in- 

 sect prefers corn to 

 cotton. Hence it 

 remains on corn as 

 long as the ears arc 

 green. After the 

 greater part of the 

 corn hartlens, usu- 

 ally- in .July, antl 



Till' mass of insoet c-iisting.-j near tlic (cp ..f after the tllird and 



uhhh' numerous 

 genei'at ion of worms 



appears, severe injury is done f(.i the squares and bolls 



of cotton. 



360. Preventive measures. - In sjiite of the great 



r'lG. 11)8. — The Cotton Boll-worm on the 



tJUTylLE OE A ( 'oTTOX HoLL. 



llic intcTior of llic 1)( 



