GARDEN PESTS AND SPRAYING 



neighborhood societies of garden owners have been 

 formed, and out of the common treasury the expenses of 



Types of chewing insects. 



neighborhood spraying have been borne, thus establish- 

 ing one of the most helpful cooperative movements 

 known for the maintenance of fair areas. 



Insect pests may be divided into two general 

 classes of external feeders insects that injure the 

 plants by biting or gnawing (these must be got rid 

 of by poisoning their food), and insects that destroy 



Types of sucking insects. 



55 



