Bui. 121, Bureau of Plant Industry, U. S. Dept. of Agriculture. 



Plate IV. 



'S£ 



»W*i 



Fig. 1.— Unsprayed Winesap Trees Defoliated by the Leaf-spot Disease. 



Fig. 2.— Sprayed Winesap Trees in Full Foliage, Located in the Same Orchard 

 and Photographed at the Same Time (October 19, 1906) as Those Shown in 

 Figure 1. 



