Bui. 787, U. S. Dept. of Agriculture. 
Plate 1 1, 
Fig. I.— Natural Growth of Locust in an Old Abandoned Field of Some 
60 Acres in Extent at Falls Church, Va. 
An Isolated clump of some 30 trees, 2 to 4 inches in diameter. These were growing close together and 
mixed with tall weeds and sassafras bushes. Illustration after clearing the trunks in July when 
not a single borer was present. In September these were heavily infested. 
Fig. 2.— Illustration of a Fence Row at Falls Church, Va., Showing 
Thick Locust Growth of 2 to 5 Inches in Diameter near Base. 
None of these trees contained borers in July, 1918, when the underbrush and small branches were 
cleared from the trees in the foreground. These trees were infested in September. 
PROTECTION FROM THE LOCUST BORER. 
