ELEMENTS 



OF 



WATER BACTERIOLOGY 



WITH SPECIAL REFERENCE TO 



SANITARY WATER ANALYSIS 



BY 



SAMUEL GATE PRESCOTT 



Associate Professor of Industrial Microbiology in the Massachusetts 



Institute of Technology 



AND 



CHARLES-EDWARD AMORY WINSLOW 



Associate Professor of Biology, College of the City of New York, and Curator 

 of Public Health, American Museum of Natural History, New York 



THIRD EDITION, REWRITTEN 



FIRST THOUSAND 



NEW YORK 



JOHN WILEY & SONS, INC. 



LONDON: CHAPMAN & HALL, LIMITED 



1913 



