PLATE 69 
A. —The frame used in the inoculation of bean plants in the greenhouse, filled 
with plants in position for atomization. 
B. —Disks of leaves of varieties of beans photographed after extraction of 
chlorophyll, showing variation in response to rust inoculation in the greenhouse. 
All inoculated at the same time and incubated under similar conditions, a, Ten¬ 
nessee Green Pod, large uredinia; b, McCaslan and c. Navy Pea, similar to a; d, 
Yellow Eye, small uredinia; e, French’s Horticultural, small uredinia bordered by 
flecks; /, Tennessee Wonder, small uredinia, uredinia bordered by flecks and flecks, 
g, New Pearl, large flecks; h, Improved Goddard, small flecks; i, Horticultural 
Pole, neither sori nor flecks. 
