560 Agricultural Experiment Station, Ithaca, N. Y. 



form of this red rust fungus. The spores of this form mature in the 

 fall, and these, falling on the ground, are probably the means of 

 inoculating the plant with the rust through young underground 

 shoots. The red rust form of the fungus is known as Cceoina 

 nitens. 



ISO.— Leaves diseased by yellows. 



It is evidently useless to endeavor to cure or to treat this yellows 

 or red rust. The first moment the disease is detected, the affected 

 plant should be pulled out, root and branch, and burned. If one is 

 alert, it is generally an easy matter to keep a patch free of the dis- 

 ease. I know of no disease of fruit plants the presence of which is 

 such an infallible indication of neglect as this. 



