PRESUMPTIVE TEST FOR BACILLUS COLI 



TABLE 4. Continued. 



297 



SMITH SOLUTION 



O.I C.C. 



BILE LACTOSE 



Rahway River, N. J., just be- 

 low sewer outlet 



Total gas o 



After absorption , 



Per cent carbonic acid 



Test for B. Coli o 



Bodine Creek, S. I., badly 

 contaminated 



Total gas... 17 



After absorption , 



Per cent carbonic acid .... 



Test for B. Coli o 



Kill von Kull, badly contami- 

 nated- 

 Total gas 10 



After absorption 



Per cent carbonic acid 



Test for B. Coli o 



Hudson River at mouth, badly 

 contaminated 



Total gas 15 



After absorption 



Per cent carbonic acid 



Test for B. Coli o 



Hudson River at Hoboken, 

 badly contaminated 



Total gas.... 12 



After absorption 



Per cent carbonic acid 



Test for B. CoK o 



East River near B'klyn Bridge, 

 badly contaminated 



Total gas 10 



After absorption 



Per cent carbonic acid .... 



Test for B. Coli o 



East River below Blackwell's 

 Island, contaminated 



Total gas 25 



After absorption 17 



Per cent carbonic acid 32 



Test for B. Coli + 



Harlem River near mouth, con- 

 taminated 



Total gas 20 



After absorption 



Per cent carbonic acid 



Test for B. Coli o 



Bronx River, contaminated 



Total gas.... 33 



After absorption 23 



Per cent carbonic acid 30 



Test for B. Coli + 



Gowanus Canal, at head, badly 

 contaminated- 

 Total gas 15 



After absorption 



Per cent carbonic acid 



Test for B. Coli o 



Gowanus Canal at Hamilton A\ 

 enue bridge, badly contami 

 nated 



Total gas 12 



After absorption 



Per cent carbonic acid 



Test for B. Coli o 



Sewage effluent after rough ni- 

 tration, Bedford, N. Y. 



Total gas 12 



After absorption 



Per cent carbonic acid. . . , 



Test for B. Coli. ... .. o 



40 

 27 

 33 



23 



O 



17 

 o 



18 



34 



35 



33 



