200 ILLINOIS STATE ACADEMY OP SCIENCE 



eradicated. Owing to a large increase in the Federal ap- 

 propriation more men were employed for survey and 

 eradication during the summer of 1922 than in previous 

 years. As a result six counties were completed in 1922 

 alone, in addition to a considerable portion of the city of 

 Chicago. 



More properties infested with common barberries have 

 been found in Illinois than in any of the other twelve 

 States within the barberry eradication area. During the 

 five-year campaign, 9,478 properties on which barberry 

 was growing have been located. Iowa ranks second with 

 8,390 and Michigan third with 8,325. Although Illinois 

 has the highest number of properties with barberry, in 

 the total number of bushes found the State ranks fifth. 



Thus far about twice as many bushes have been found 

 in the towns as in the country, probably due to the fact 

 that the urban survey has been nearly State-wide while 

 the farm-to-farm survey has been confined to fifteen 

 counties in northern Illinois. 



At the rate of progress in Illinois during 1922, the best 

 year of the campaign, at least five more years will be 

 necessary to complete the original survey. Illinois re- 

 ceived $20,000 of the Congressional appropriation of 

 $350,000 in 1922. To date less than a quarter of the total 

 area of the State has been covered in the farm-to-farm 

 survey. Either the annual Federal allotment will have 

 to be increased considerably or the State will have to 

 give generous financial aid to the movement if Illinois is 

 to be cleared of barberry by the time the other 12 States 

 are covered. 



PROBLEM OF ESCAPED BARBERRIES 



One of the difficult problems encountered in the eradi- 

 cation campaign in Illinois is the widespread occurrence 

 of escaped bushes that have grown from seeds scattered 

 from cultivated bushes. Of the bushes found in the coun- 

 try, 27,463 were escaped bushes on 458 properties distri- 

 buted in every county of the surveyed area. 



Because of the large number of escaped bushes, eradi- 

 cation has been retarded considerably. Usualty these 

 bushes were found growing in timber land, brushy pas 



