Bui. 1074, U. S. Dept. of Agriculture. 
Plate XX. 
Red Bobs (A). 
Kitchener (B). 
Spikes, face and side \ie\vs, natural size: glumes from lower, central, and upper portions of spike, 
natural size; kernels in three positions and in transverse section, magnified 3 diameters. 
