ONTARIO AGRICULTURAL COLLEGE. 



BULLETIN 125. 



ROUP 



BY 



F. C. Harrison, Professor of Bacteriology, 



and Dr. H. Streit, Assistant in Bacteriology, 



Ontario Agrix:ultural College, Guelph. 



PUBLISHED BY THE ONTAfilO DEPARTMENT OP AGRICULTURE, 

 Toronto, Ont., Deceiviber, 1902. 



Printed by L. K. CAMERON, 



Printer to the Kind's Most Excellent Majesty. 



