Spur Bright op the Red Raspberry 
i 7 
Figure 10. Unsprayed Canes. 
was made to that place in July. An examination of the diseased 
canes showed that they were suffering from an attack of a parasitic 
fungus, whose technical name is Sphaerella rubina P. The fruit¬ 
ing canes develop their leaves and flowers as usual, but before the 
fruit ripens it withers and dies in the branches. The dryness of 
the season and an attack of ‘red spider’ were apparently contrib¬ 
uting causes of the failure of the crop, and the loss was severe. 
The diseased canes bear patches of the fungus. It matures its 
spores early in the season. In the type specimens, they were found 
in May. The young canes showed brown or blackish patches one 
or two inches on the lower part. In some cases they were near 
the ground, thereby indicating a probable infection when they were 
but a few inches tall. These spots had not yet developed their 
