1916] LINK—FUSARIUM 177 
produce wilt, or whether the potato plant enjoys an effective or 
practical immunity rather than an absolute one. Even though 
WOLLENWEBER (41) did not consider F. trichothecioides a wilt 
Fic. 1.—Tuber rot produced in laboratory with Fusarium oxysporum, and F, tri- 
chothecioides; A, soft rot produced by F. ox ysporum, incubated at 20° C. for 17 days, 
arly Ohio variety; B, exterior of tuber rotted by F. trichothecioides, incubated at 20° C. 
for 17 days, Early Ohio variety; C, dry rot produced by F. trichothecioides, incubated 
at 20° C. for 17 days, Early Ohio variety. 
