119 
The fusariose described in this paper is caused by one 
•of those species which under conditions of high humi- 
dity are able to destroy parenchymal tissue. The pre- 
sence of wounds and a weakened condition of the host 
.are probably factors which particularly favour the attack 
of these species. 
However, we are as yet far from willing to establish 
hard and fast limits with regard to »early» and »late» 
fusariose in peas. Inoculations under laboratory con- 
ditions can not give us any conclusive proof as to the 
susceptibility of the host under natural conditions, and 
further work, especially out-door cultures, is necessary 
before the value of the distinction between these two 
.groups can be ascertained. 
3. Infection experiments. 
The seeds used for obtaining suitable plants for the 
infections were as a rule allowed to germinate in moist 
saw dust at room temperature (15 — 18° C). The follo- 
wing field-pea varieties were used: Concordia (Svalöv 
1917) . Gröpärt (Svalöv 1917), Soloärt (Svalöv 1917). 
Of garden peas the following marrowfats vere used: 
Non plus Ultra (Svalöv no. 96, 1918), Stensärt (Gottorp 
no. 52, 1917), Champion of England (Svalöv no. 1669, 
1918) . Irt oder to obtain an idea of the soundness of 
the various strains used in the infection experiments 
samples were taken and germinated in moist filter-paper 
under bell-jars (temp. 15 — 18° C). The time required 
for the germination and also the kind of seed pathogens 
isolated from the different samples were noted. Table 
I gives the result of the tests with the above-mentioned 
marrowfat peas used in the infection experiments to 
follow. The peas were rinsed repeatedly in distilled 
water and were then allowed to swell in water for 24 
hours before testing. 
