Massachusetts 

 Agricultural Experiment Station 



Bulletin No. 273 April, 1931 



Infectious Trachitis 



By Charles S. Gibbs 



Infectious trachitis has been the case of heavy losses to the poultry in- 

 dustry in the State of Massachusetts. Evidences are apparent that these 

 losses are increasing, and there is a pronounced interest in methods of 

 prevention and control. This study of the disease, its symptoms, pathology 

 and mode of transmission, was undertaken to furnish a basis for procedure 

 in perfecting control methods. 



MASSACHUSETTS STATE COLLEGE 



AMHERST, MASS. 



