121 
A. Soil-infection. The seeds were germinated in 
steriHzed sawdust and were then planted in flower-pots, 
the soil being mixed with mycelium-containing agar 
media taken from pure cultures of F. viticola. Experi- 
ments begun Sept. 12, ended Nov. 9. The results of 
the inoculations are shown in Table III. The root- 
system of the infected peas developed but poorly and 
became yellowish brown in colour. Anatomical inves- 
tigations revealed an abundance of hyphae, especially 
in the bark-layer. 
Table III. 
Variety 
Date of first 
signs of wilt 
Number of 
plants wilted 
1 
Fungus isol. 
1 
15 
Non plus 
Ultra 
i 
15 
Stensärt 
oct. 5 
9 * Fus. vit. 
1 1 
15 
Champ, of 
Engl. 
« 
i2 : 
15 
Solo 
8 
» 
15 
Concordia 
oct. 5 
6 
* 
B. Above-ground inoculations. Plants 3 — 5 cm. tall 
were placed in pots and inoculated at the base of the 
stem. Mycelium from pure cultures as well as myce- 
lium-containijig media were used. The experiments 
were started on Sept. 12 and finished on Nov. 9. 
(Table IV). 
It should be remarked that the wilted plants never 
reached any considerable size but usually succumbed 
when 15 — 30 cm. tall, while those that remained healthy 
to the end of the experiment attained a height of be- 
tween 50 cm. (Solo) and 65 cm. (Non plus Ultra and 
Champ, of Engl.) » 
