PLATE 3 
A. —Representative ears of marketable com. Compare with unmarketable com, 
Plate 2 . 
B. —On the left, an ear of a resistant type grown from disease-free seed and resistant 
to ear rots. On the right, an ear grown from diseased seed and susceptible to ear rots. 
Both ears were injured by the ear worm approximately to the same extent. On the 
resistant type (left) the injury was confinea to that done by the worm, which injury 
was practically negligible as far as marketing is concerned. On the other ear (right), 
susceptible to ear rots, the worm injury was followed by fungous rots which made it 
practically worthless. 
