140 



ANNUAL REPORTS OF DEPARTMEXT OF AGRICULTURE. 



Herds of cattle accredited as free from ttiberctilosis and herds that have passed 



one test vp to June SO, 1922. 



The large increase in testing is due in a measure to the participa- 

 tion of the accredited practicing veterinarians who were delegated 

 to retest herds which had been freed from tuberculosis and to the 

 interest generally displaj-ed by this group of men. As' a result of 

 examinations the number of accredited veterinarians was increased 

 from 3,160 on June 30, 1921, to -1,412 at the close of this fiscal year. 



ERADICATION OF TUBERCULOSIS FROM AREAS. 



The eradication of tuberculosis from livestock by means of the 

 tuberculin testing of all cattle within a given area is the predomi- 

 nating w^ork of the State and bureau forces. This plan has now 

 advanced beyond the experimental stage. 



At the close of the fiscal year 31 counties had completed one or 

 more tests of all the cattle within their borders (T in Oregon, 4 each 

 in Washington and Wisconsin, 3 each in Michigan and Mississippi, 



