Bui. 108, Bureau of Entomology, U. S. Dept. of Agriculture. 
Plate II. 
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Fig. 1 .—Experimental Plats on the Agricultural College Farm, Fargo, N. Dak.; 
New Plantings and with Clean Roadways Separating Them from Adjacent 
Fields. These Plats Were Notably Free from Leafhoppers, Although 
Fields Nearby Were Affected. (Original.) 
Fig. 2.— Experimental Plats of the U. S. Department of Agriculture at 
Arlington, Va. In Autumn with but Narrow Separation from Infested 
Grass Plats or Strips and Showing Considerable Infestation by Migration. 
(Original.) 
Fig. 3.— A Terraced Farm in South Carolina Showing the Uncultivated 
Terrace Strips in which the Leafhoppers Breed and from which They 
Readily Migrate to the Cultivated Crop on the Level. (Original.) 
