S*j£/eC&A7754&7E 0 /= /= > jL>9//r*S' &/= /=>jLs?/VTIS 
28 
Journal o f Agricultural Research 
Vol. XXIX, No. I 
O 5 /5 25 35 45 55 65 75 65 95 /OO 
/=!£"/? C5A/T ST5TM /t/SST 
I vmF - /.IV __ I I ^rV-iiLwi 
O 5 /5 253545 5565 75 8595 /OO 
/*£& C£A/T 5T£M #UST. 
Fig. 5—Frequency distribution, by percentage of stem-rust infection, of F 2 hy¬ 
brids and of the Kota and Hard Federation parents at St. Paul, Minn., and 
Mandan, N. Dak , in 1922 
