ELEMENTS 



OF 



WATER BACTERIOLOGY 



WITH SPECIAL REFERENCE TO 



SANITARY WATER ANALYSIS. 



BY 



SAMUEL GATE PRESCOTT, 



Assistant Professor of Industrial Biology, 

 AND 



CHARLES-EDWARD AMORY WINSLOW, 



Assistant Professor of Sanitary Biology, 



IN THE 

 MASSACHUSETTS INSTITUTE OF TECHNOLOGY. , 



UNIVERSITY 



OF 

 SdUFOR 



SECOND EDITION, REWRITTEN 

 FIRST THOUSAND. 



NEW YORK: 



JOHN WILEY & SONS. 



LONDON: CHAPMAN & HALL, LIMITED. 



1908. 



