Massachusetts 

 agricultural experiment station 



Control Series 



Bulletin No. 63 



September, 1932 



Twelfth Annual Report on 



Eradication of PuUorum Disease 



in Massachusetts 



By 

 H. Van Roekel, K. L. Bullis, O. S. Flint and Miriam K. Clarke 



In this bulletin are reported the results of investigations concerning 

 pullorum disease and its eradication. The object of the work here 

 described is to gain more knowledge about the nature of this disease. 

 This in turn will aid in the establishment and maintenance of pullorum 

 disease-free flocks, which is the primary motive of our eradication 

 program. 



MASSACHrSETTS STATE COLLEGE 

 AMHERST, MASS. 



