PLATE i 
A. —Apple-blotch canker at base of terminal bud scale. 
B. —Canker between leaf scars on watersprout. 
C. D, F.—Cankers at leaf scars on bearing wood. 
E.—Leaf-scar canker on nursery stock. 
G, H, I.—Basal petiole lesions. In I the lesion has visibly crossed to the twig. 
