1921] 
WEBB—GERMINATION OF SPORES OF CERTAIN FUNGI 
331 
producing inhibition of germination in the other media allow 
good germination in this medium. The maxima generally 
Ad p" NR] E 
A —À 
A ` 
8o 2^ z be. 
E po NUN 
x 
i vA 
à 60 : Zé 
I Fd 
I 
> |] 
9 40 i 
S I / —L—L————— ae 
I i a7'e 
l 3/*e 
Š RN, 
t ' 
m 
^ 
3 4 s 6 y 8 9 10 
zb 
Fig. 33. Fusarium sp. in sugar beet decoction. 
manifest themselves within relatively wide zones, and perfect 
or almost perfect germination frequently continues from extreme 
acidity to extreme alkalinity, that is, within the limits of the 
/oo 23%e 
--—-L---41-a7e 
A. gre 
PP eU bom 
oc I TE z 
3 : i" CN p / 
= : 2 / ^ duh 
i ' V DSL TRS 
I NÉ | " b Pel. 
a ns 
T Li N 
P RE / * 
5 yr. ; "Baad 
M 20 / " 7 he / — 
q f ; - gari —rL- 
Li 
P t 2 3 + s 6 7 8 9 fo 
Fig. 34. Fusarium sp. in “water HCl or KOH.” 
experiments. From these facts, it would seem that the beet 
decoction possesses some stimulating substance or complex set 
of conditions, either or both of which are absent in the synthetic 
culture media, and the belief is further confirmed by several 
