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, 



Instructor in Sanitary Bacteriology, 



IN THE 



MASSACHUSETTS INSTITUTE OF TECHNOLOGY. 



FIRST EDITION. 

 FIRST THOUSAND 



M 7 V 



NEW YORK : 



JOHX WILEY & SONS^ 

 LONDON : CHAPMAN & HALL, LIMITED. 

 1904. 



