PLATE 3 



A. — Late stage of bitter-pit on Rhode Island Greening apple. 



B. — Internal browning accompanying bitter-pit. 



C. — Jonathan-spot on Jonathan apple. 



D. — Early stage of drouthspots on a Winesap apple from Wenatchee, Wash. The 

 drops of exudate can be seen on the surface of the apple. 



E. — Late stage of drouthspots on a Winesap apple. Note the deep depressions 

 scattered over the surface of the apple . 



F. — Cross section of the apple shown in E. Note the almost entire absence of brown 

 corky tissue. 



27806°— 18 3 



