PLATE 5 



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A. — Cork on Yellow Newtown apple from Hood River, Oreg. Note the roughene, 

 appearance. 



B. — Cross section of the apple shown in A. Note the area of brown corky tissue. 



C. — "White Pearmain apple showing the severity of the 1915 drouth at Wenatchee, 

 Wash. No drouthspots were developed on such apples. 



D. — Cork, or " dryrot ", on a King apple. Note the brown corky tissue near the core. 

 In surface view such an apple appears normal. 



E. — Blister on an Esopus apple from Entiat, Wash. 



F. — ^An extreme case of Yorkspot on a York Imperial apple. Note the circular 

 nature of the injury. 



G. — Cross section of the apple shown in F. Note the pockets and the brown corky 

 tissue beneath the surface depression. 



