Bui. 89, Bureau of Entomology U. S. Dept. of Agriculture. 
Plate VII. 
Fig. 1.— Retarded growth of vines in the unsprayed r lat. (Original.) 
Fig. 2.— Vigorous growth of vines in the sprayed plat. (Original.} 
Views of Experimental Flats in Mr. Roscoe Davidsons Vineyard at North 
East, Pa. 
