New York Agricultural Experiment Station. 241 



The two affected trees belonged to a lot of eight culls which had 

 been left standing while the more desirable trees in the block had 

 been dug and sold. Probably, they were imported trees although 

 the owner is unable to furnish definite information on this point. 



l Seneca 

 .Ca-stle 



1 



[(re*eva «> 



2 

 ft 

 ft 



» 



Map 1. — Distribution of Cronartium ribicola at Geneva in 1912 and 1913. 



o = Ribes infection in 1912. 



* = Pine and Ribes infection in 1913. 



x = Experiment Station. 



Scale, one inch = two miles. 



From the fact that the point of attack was on the trunk near the 

 ground it appears probable that they had been diseased ever since 

 they were quite small. 



Although diligent search was made no other diseased pines were 

 found. These two trees may have been responsible for all of the 

 16 



