CROP ENEMIES AND FRIENDS 



They cause the farmers of the coun- 

 try an annual loss of not less than 

 five hundred million dollars. 



At least two thirds of this loss 

 might be prevented by proper 

 methods and remedies. Is it not 

 the part of wisdom for every farm- ^P 



'er to know and practice these? 



CANKER WORMS ON APPLE 

 In order to use them, he must know LEAVES 



the insects most apt to injure his 



crops, their different forms in different stages, their habits 

 of feeding, and when and how they can be most easily and 

 economically destroyed. 



An Insect. An insect is a small animal which breathes 

 air through its body, has six legs, and a body divided into 

 three parts head, tho'rax, and ab do'men. On the head 

 are the mouth, the an ten'nae or feelers, and the eyes. The 

 thorax is in three parts, on each of which is a pair of legs. 

 Some insects are wingless, but most adult insects have one 

 or two pairs of wings on the thorax. On the abdomen are 

 tubes, called spir'a cles, through which the insect breathes. 



Ants, flies, bugs, beetles, grasshoppers, moths, and but- 

 terflies are insects. Spiders, which are often called insects, 

 have eight legs, and belong to a different class of animals 

 of the same group. 



Insects usually pass through four stages, egg, lar'va, 

 pu'pa, i ma/go. 



Larva. The insect comes from the tiny egg as a larva, a 

 worm-like creature very unlike the parent. The larvae are 

 greedy feeders. They eat, literally and truly, all that their 

 skin will hold. When the skin cannot stretch any more 



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