i9 
A Disease of Tomatoes. 
mycelium was found to have extended upwards and downwards 
both in the vessels and in the cortex. In the few plants which did 
not become infected after of inoculation, the mycelium had 
evidently failed to develop. 
Inoculation Experiments with Fungus Derived 
from the Stem. 
In almost every case when some of the mycelium grown on 
tomato-gelatine was inserted in a wound made in the stem of a 
healthy tomato plant, infection resulted and pycnidia of the same 
Fig. 10. Fungus isolated from stem. Section of older pycnidium on an 
inoculated fruit. x500 diam. 
Fig. 11. 
agar. 
Fungus isolated from stem. Photograph of culture on tomato. 
