362 OHIO EXPERIMENT STATION: BULLETIN 332 



PLATE XVI 



INEFFICIENCY AND EFFICIENCY IN SPEAYING 



Figures 1 and 2 contrast the climbing method which is necessary when 

 mist sprayers are used for the treatment of tall trees, and the solid stream 

 method of spraying. With the solid stream method one is able to spray the 

 trees on half of a city block, while one tree is being sprayed by the climbing 

 method. Moreover, the trees treated by the solid stream method will be more 

 thoroughly sprayed and at the same time the work is more enjoyable for the 

 operators. 



