SOME RESULTS 



OF 



CO-OPERATIVE EXPERIMENTS 



ON 



RACES OF BEES 



TO DETERMINE THEIR POWER TO RESIST 



EUROPEAN FOUL BROC 



BY 



MORLEY PETTIT 



Provincial Apiarist, Guelph 



(PRINTED BY AUTHORITY OF THE MINISTER OF AGRICULTURE) 



ONTARIO 



TORONTO 

 Printed by L. K, CAMERON, Printer to the King's Most Excellent Majesty 



1915 



