•24 



DISEASES OF BEES 



15 



14 



1908 9 



33 1935 



the total number of cases of American and European foul brood 

 from 1908 to 1935, taken from the reports of Dr Leuenberger. I 

 am afraid you will be disappointed on examining this table to see 

 that the success of which I have spoken has reference only to one 

 form of foul brood, namely, American foul brood. We see a pro- 

 nounced reduction of this disease from about 13 per thousand 

 colonies in the year 1908 to about 3 per thousand in the year 1935. 

 This is the splendid result of Leuenberger's organisation. The 

 control method consists in burning the combs of a sick colony 

 and shaking off the bees as an artificial swarm. The hive is dis- 

 infected with a flame and, what is most important, the apiaries 

 of Ihe entire neighbourhood are inspected repeatedly. In this way 

 it has been possible to free large areas from American foul brood. 

 If we have not yet succeeded in entirely banishing this disease from 

 our country it is not the method which is to blame. I emphasize 

 this because recently in America and in Germany certain workers 



