176 ANNUAL REPORTS OF DEPARTMENT OF AGRICULTURE. 



The inspection of nursery stock and pine plantations and the gen- 

 eral scouting for the disease on pine and Ribes are carried on in New 

 Jersey, Pennsylvania, and the southern Appalachian region; also in 

 the Middle and far Western States. Formal or informal cooperation 

 is maintained with these States. One or two planted trees were 

 found diseased last year in Pennsylvania, in Michigan, and also in 

 New Jersey. In the last-named State the disease was also found on 

 four patches of cultivated Ribes. 



Scattered pine and currant infection exists in Wisconsin and Min- 

 nesota. It is not yet clear whether the complete eradication of the 

 disease will be practicable in these States. The results of scouting in 

 the far Western States indicate that this region is free from white- 

 pine blister rust. Continued scouting in these States is most im- 

 portant and should be actively pursued during the period required 

 for the solution of the Minnesota- Wisconsin infection problem. 



CITRUS-CANKER ERADICATION. 



The work of eradicating citrus canker from the citrus regions of 

 the South is progressing steadily. No epidemic outbreaks of serious 

 proportions have occurred during the year in any of the States af- 

 fected, and a gradual reduction of inspection work has been possible 

 without jeopardizing the eventual complete eradication of the disease. 



