SB 



818 



C578 



ENT 



Issued Mav 10, 1912. 



U. S. DEPARTMENT OE AGRICULTURE, 



BUREAU OF ENTOMOLOGY— CIRCULAR No. 157. 



L. O. HOWARD, Entomologist and Chief of Bureau. 



THE CAUSE OF EUROPEAN FOUL BROOD. 



G. F. WHITE, M. D., Ph. D., 



Expert in Bacteriology. 



WASHINGTON : GOVERNMENT PRINTING OFFICE : 1912 



38171° — Cir. 157—12 1 





