"Apple Scab. 1, Mcintosh apple with scab spots; 2, Fruit cut open 

 to show depth of penetration ; 3, Leaf with many young spots; 4. Leaf 

 with older spots ; 5, Spots on twig, winter condition ; 6, Spots on twig, 

 slightly magnified."— Bi' permission mohtana Experiment Sta. 



