16 Farmers’ Bulletin 1206. 
1 pound, or powdered lead arsenate 2 pounds, low grade molasses 2 
gallons, water 3 to 4 gallons. The bran and insecticide are first mixed 
together dry, the molasses is then added, and the whole mass is thor- 
oughly combined. Five pounds of salt may be added to the mixture 
to keep it from drying out. The addition of six finely chopped lemons 
or oranges to the mixture to give flavor has been found to be ad- 
vantageous in some cases, and water may be added when necessary. 
Fig. 12.—Hand duster which may be used in applying calcium arsenate or lead arsenate 
to forage plants infested with corn earworms. 
When scattered over the fields thinly it is effective with caterpillars 
moving to an uninfested field. 
MECHANICAL METHODS OF CONTROL. 
Before cutting the vetch in a seriously infested field a deep furrow 
should be made around it, because the caterpillars begin to leave a 
field while it is being cut, spread in all directions, assume the army 
worm habit, and, if nothing is done to prevent their onward march, 
