PLATE 2 
A. —Commercial Hollander plants grown 30 days from seed in sterilized soil at 
17® C. All 10 plants healthy. 
B. —Commercial Hollander plants grown 30 days from seed in *‘sick^’ soil at 17® C. 
Three of the 10 dead; all others yellowing and stunted. 
C. —Wisconsin Hollander plants grown 30 days from seed in '‘sick’^ soil at 17® C. 
All healthy. 
. L.—Susceptible Commercial Hollander plants grown 36 days from seed in non- 
infested soil, then 30 days after transplanting to “sick” soil at 15® C. All healthy. 
E. —Plants of same variety as those in D and grown under same conditions but 
transplanted to “sick” soil at 17® C. Two dead; the other yellow and stunted. 
