IOWA STATE COLLEGE 



OF AGRICULTURE AND MECHANIC ARTS 



OFFICIAL PUBLICATION 



Vol. XX December 28, 1921 No. 31 



BACTERIA FERMENTING LACTOSE 



and 

 THEIR SIGNIFICANCE IN WATER ANALYSIS 



By 



MAX LEVINE 



Bacteriologist 

 IOWA ENGINEERING EXPERIMENT STATION 



and 

 Associate Professor of Bacteriology, . 



IOWA STATE COLLEGE, AMES, IOWA 



BULLETIN 62 



ENGINEERING EXPERIMENT STATION 

 AMES, IOWA 



Published weekly by Iowa State College of Agriculture and Mechanic Arts, Ames, Iowa. 

 Entered as Second-class matter, and accepted for mailing at special rate of postage provided 

 for in Section 429, P. L. & R,, Act August 24, 1912, authorized April 12, 1920. 



