ELEMENTS 



WATER BACTERIOLOGY 



WITH SPECIAL REFERENCE TO 



SANITARY WATER ANALYSIS. 



BY 



SAMUEL CATE PRESCOTT, 



Assistant Professor of Industrial Biology, 

 AND 



CHARLES-EDWARD AMORY WINSLOW, 



Instructor in Sanitary Bacteriology t 



IN THE 



Massachusktts Institute of Technology. 



FIRST EDIl^ION. 

 FIRST THOUSAND. 



NEW YORK: 



JOHN WILEY & SONS. 



London : CHAPMAN & HALL, Limited. 



1904. 



