PLATE 24 
Potato-stem lesions four weeks after inoculation: 
A-H, Plants inoculated with. Rhizoctonia solani: A, R. VII; B, C, E, R. potomacen- 
sis; D, Hyp. I; F, R. S.; G, R. VI; H, R. XVI. 
I-L, Plants inoculated with species of Fusarium: I, F. solani; J, K, F. radicicola; 
L, F. trichothecioides. 
(220) 
