1916] LINK—FUSARIUM 187 
irrigation ceases and no more soil is heaped about the crown of the 
plant and transpiration requirements must be met by badly infected 
oo 
‘Oo 
A 
i) 
x= 
oO 
had 
~_— 
2 
— 
3 
a 
~~ 
oO 
— 
— 
wn 
= 
20 
os 
< 
8 
~~ 
Ps 
Me 
oe 
> 
3 4 
3 
o 
in 
— 
a) 
a 
7 
Se 
° 
a 
o 
ws 
> 
a 
o 
° 
~ 
3 
z 
® 
~ 
Pend 
~~ 
3 
e] 
a 4 
= 
oO 
ao 
= 
om 
o 
T 
roy 
S) 
— 
~ 
lower roots and a few healthy upper ones without the possibility 
of developing new roots, the plant soon succumbs. In this way we 
get the exceedingly frequent phenomenon of large plants, usually 
