354 Bush-Fruits 



eased tissue. It varies much in frequency. Ordinarily it causes no 

 damage, but occasionally seems to develop with unusual rapidity, 

 and works serious injury. It is difficult to combat, for when the 

 cluster-cups appear so that the disease is noticed, the harm for that 

 year is already done. Since the causal fungus, in its winter condition, 

 infests various species of common sedges the destruction of all sedges 

 in the vicinity should be helpful in the control of the disease. Per- 

 haps spraying for the gooseberry mildew may prevent the earliest in 

 fection. 



