U. S. DEPARTMENT OF AGRICULTURE. 



BUREAU OF PLANT INDUSTRY BULLETIN No. 64. 



METHOD OF DESTROYING OR PREVENTING 

 THE GROWTH OF ALG.E AND CERTAIN 

 PATHOGENIC BACTERIA IN 

 WATER SUPPLIES. 



GEORGE T.^MOORE. 



PIIY>I( >i.< rcisr AND ALGOLOGIST IN CHARGE OF LABORATORY 

 OF PLANT PHYSIOLOGY, 



KARL F. KELLERMAN. 



ASSISTANT IN PHYSIOLOGY. 



VEGETABLE PATHOLOGICAL ANJD PHYSIOLOGICAL 

 INVESTIGATIONS. 



i) MAY 7, 1904. 



WASHINGTON: 



<;ov i: KN .M i: NT IMJTNTING OFFICE, 

 1 1*04. 



