32 A STUDY OF WHEAT. 



between them. See Figures 8 and 9. The greatest difference 

 is found in the size of the large grains of starch, those of 

 Diehl being -g^ of an inch in diameter, while m Clawson they 

 are only y-^ of an inch in diameter; Treadwell, -gfa ; Wicks 

 -sir ; Egyptian, -^ ; Scaffer, T1 J inr ; Russian, ^ T . Although 

 the difference is nowhere near as marked in the small grains, 

 still there is considerable difference in their size. Schaffer, 

 ^Vfr of an inch in diameter ; Treadwell, grVo I Russian, ^Vo 5 

 Egyptian, -g-oV -. These measurements were obtained by taking 

 a large number of as nearly typical grains as possible, meas- 

 uring them accurately, and then obtaining their average diameters. 



