ONTARIO AGRICULTURAL COLLEGE. 



BULLETIN 132. 



ROUP: 



AN EXPERIMENTAL STUDY. 



BY 



F. C. Haj«rison, B.S.A., Professor of B.vcteriology, 



AND 



H. Streit, D.M.V., Assistant in Bacteriology. 



PUBLISHED BY THE ONTAEIO DEPARTMENT OF AGRICULTURE, 

 Toronto, Ont., December, 1903. 



Printed by L. K. CAMERON, 

 Printer t<> the King's INIo.st Excellent Ma.iestv 



