PLATE 71 
A. —Comparison of varietal susceptibility of beans to rust in the field. Left Powell's 
Prolific, susceptible, completely defoliated from rust infection. Right Tennessee 
Wonder, resistant, uninjured by rust. Photographed August 13, 1918. 
B. —Secondary uredinia formed in circles around the primary uredinia on a leaf 
of Tennessee Green Pod. Photographed one month after inoculation in the green¬ 
house. Slightly reduced. 
