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ILLINOIS NATURAL HISTORY SURVEY CIRCULAR 47 



ABOUT SPRAY EQUIPMENT AND ITS USE 



A 2- or 3-gallon knapsack sprayer, fig. 55, is the smallest 

 equipment suitable for spraying shrubbery and small trees. The 

 low pressure and low rate of discharge of such equipment demand 



Fig. 55. — Compressed air sprayer, a convenient sprayer for small jobs. 



