MASSACHUSETTS 

 AGRICULTURAL EXPERIMENT STATION 



BULLETIN No. 2<)5 MAY, 1933 



The Immunology of 

 Infectious Laryngotracheitis 



By Charles S. Gibbs 



Contagious diseases are sometimes controlled by taking advantage 

 either of serological tests or of vaccination procedures based on immunol- 

 ogy. The immunology of infectious laryngotracheitis has never been 

 worked out. While this study is not exhaustive, progress has been made 

 toward a better understanding of the disease, and a tentative vaccination 

 method for its control is advanced from the laboratory stage to more 

 extensive experiments in the field. 



MASSACHUSETTS STATE COLLEGE 

 AMHERST, AL\SS. 



