THE DISEASES OF BEES. 93 



by first scrubbing them inside and out with boihng water and 

 strong soap, and afterwards painting them over very liberally 

 with a solution of one part of Calvert's No. 5 carbolic acid to 

 each two parts of water, taking care that this solution soaks 

 thoroughly into every joint and crann}^, just as in the case of 

 foul brood. After exposure to sun and air, until the smell of 

 carbolic has passed off, the hives ma}'- be used again. 



Stray swarms that have taken possession of old hives and 

 combs in which the former bees had died of Isle of Wijjht 

 disease have occasionally failed to contract the disease them- 

 selves. But this is no more proof that the disease is not 

 infectious than the well-known fact that many nurses in 

 infectious fever hospitals never contract fever themselves is 

 proof that many virulent fevers are not both infectious and 

 contagious. 



Need for Adequate Ventilation. 



Bee-keepers ought always to bear in mind that lack of 

 proper ventilation is a contributory cause of Isle of Wight 

 disease. 



Disinfection. 



The bee-keeper, after handling any hive infected, or 

 suspected of being infected, with Isle of Wight disease, must 

 take the same precautions to disinfect himself and any 

 appliances he may have used very thoroughly before he 

 manipulates another hive, as are necessary (and have been 

 described) in the case of foul brood. Needless to say, he 

 must never put a comb, quilt, or anything else from a diseased 

 hive into a healthy one. 



