~ - 

 1 -8 I 



S5 



i 



(0 



16 



1 I 



DC 



H E 



f t ."> : S 



<o & 1 i 



43.6 



7fc.7 



B 



n 



43.1 



Fig. 1. Percent of Positive Reactions of Coli-like Bacteria from (A) Feces and Sewage, 



and (B) Soil 



