14 
BULLETIN 1040, IT. S. DEPARTMENT OF AGRICULTURE. 
inches of water are in the bottom of the tank, the soap powder is sifted in 
as the tank is be'ng filled and the agitator is running. The oil is added last 
before the tank is full. 
Fig. 8. — Three burlap hands from the trunks of orange trees following spring- migration 
of the citrophilus mealybug-. 
It was felt that the spraying of the bands was not entirely satis- 
factory unless the greatest care was used, so in subsequent work it 
was decided to dip them just before spraying. The application, to 
