New York AGRICULTURAL EXPERIMENT STATION, 283 
A probable reason why the disease has not been found in the 
fields of western New York.—The almost complete failure of 
these spore inoculations, in the field, suggests a reason why 
the parasite has not been observed in the fields of this 
vicinity. It seems that the very moist, warm environment of 
the greenhouse is essential for the infection and development of 
this fungus and that field conditions are preventive. 
REMARKS ON THE WoRK OF 1907-1908; PREVENTIVE MEASURES. 
As may be seen from this condensed summary of the work of 
1908, excepting some additions and extensions, it is only a 
repetition of that recorded for 1907. In general, there is no 
difference between the two seasons’ observations: the char- 
acters of the disease, as well as the two spore-forms of the 
fungus, were the same throughout. 
It seems probable that the spores of this fungus are not 
killed by exposing infested soil to weathering conditions of 
winter, nor by fumigation with hydrocyanic acid gas, and, 
that earlier planting of melons fails to prevent an attack. How- 
ever, it seems that this disease may readily be prevented in the 
greenhouse by spraying thoroughly with bordeaux mixture 
when the plants are about half grown (7. ¢., before the disease 
appears), and repeating often enough to keep them covered 
with the spray. An unsuccessful spraying experiment, on 
watermelons, is recorded by Mr. Chester,*® but the failure very 
probably was due to the fact that the disease had become evi- 
dent before the spray was applied— When the plants are 
sprayed with water the house should have good ventilation. 
CONCLUSIONS REGARDING THE NAMES OF THE 
FUNGUS 
From Chester’s characterization of the disease it appears pos- 
sible that he also had the fungus discussed in this bulletin, on 
the same vines on which he found his Phylosticta, though he 
mentions no fruits of it as occurring on the vines. Smith un- 
questionably had the Mycospherella-wilt fungus, but since 
% Del. Exp. Sta. 5th Ann. Rpt., p. 79. 
