134 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 14 



and there is suspicion of both being present in the same apiary, and pos- 

 sibly even some as mixed infection in the same colony, control of the 

 two diseases will depend upon the elimination of European foulbrood 

 first. This should be done by treating the entire apiary for European 

 foulbrood, by strengthening and requeening all the colonies with young 

 and vigorous Italian queens, which is after all only good beekeeping. 

 After the elimination of European foulbrood it will be a simple matter 

 to determine those colonies that have not responded to this treatment, 

 as being American foulbrood. This method is possible because of the 

 fact that American foulbrood seldom spreads with the rapidity of Euro- 

 pean foulbrood, particularly if care is taken to prevent robbing and mixing 

 up of combs. Those colonies which continue to show American foul- 

 brood remaining may now be given the usual shaking treatment. 



Chairman Paddock: The next part of the symposium is "The 

 Future of Bee Disease Control" by E. F. Phillips of Washington, D. C. 

 Inasmuch as Dr. Phillips is not present, but has sent his paper it will be 

 published with those read by title. 



Chairman Paddock: The next paper is bv Professor H. F. Wilson. 



Mr. Wilson: The title of the paper should be "Spread and Control 

 of American Foul Brood." 



The spread and control of American foul brood is of evident im- 

 portance as shown by the space it has taken in our bee journals. The 

 problem is one that is not as serious as we have believed. The difficulty 

 has been that not only the bee keepers but the investigators themselves 

 did not thoroughly understand the spread and control of the disease, 

 and only during the last two or three years has there been sufficient light on 

 the subject to permit of a proper method of preventing the spread and 

 securing the eradication of the disease. 



SPREAD AND CONTROL OF AMERICAN FOUL BROOD 



By H. F. Wilson, Madison, Wuconsin 

 (Withdrawn for publication elsewhere) 



Mr. Wilson: I might say that in Wisconsin there has been a great 

 deal of discussion among the bee keepers as to whether or not they could 

 use the old brood comb from diseased colonies, and this has been one of 

 the means of carrying diseases on indefinitelv. 



