There are two ways in which the disease may probably be prevented ; 

 one is by feeding a little natural food, as Mr. Hayford has done with some 

 satisfactory results, and the other is by developing a disease-resistant 

 strain. Undoubtedly the quickest way to get rid of the disease is to de- 

 stroy all the infected fish, but that is not a permanent way. As was men- 

 tioned in one case, the disease came back again in two years. I do not 

 care how many ponds of fish you destroy, the disease is bound to return 

 again, unless you develop a resistance in your fishes. I do not know how 

 far this may be carried out, but if the results continue to pile up, I am 

 sure that you will be greatly surprised when the experiments are finally 

 concluded. 



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