DISEASES CAUSED BY BACTERIA 47 



With regard to the phenomena of resistance and suscepti- 

 bility, and to the measures available for prevention and control, 

 no general distinctions need be made between bacterial and 

 fungus diseases. The methods of distribution are to a large 

 extent the same, except that transport of the dried organisms 

 by the wind is not apparent. Insects undoubtedly have very 

 considerable importance in this respect. 



