)IO3KA-STATE COLLEGE 

 OF AGRldJLTURE AND MECHANIC ARTS 

 OFFICIAL PUBLICATION 



Vol. XX ' December 28, 1921 No. 31 



BACTERIA FERMENTING LACTOSE 



and 

 THEIR SIGNIFICANCE IN WATER ANALYSIS 



By 

 MAX LEVINE 



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. 



