“…While notable advances favor the use of fecal streptococci as an index of pollution in water (Leininger and McClesky, 1953;Morris and Weaver, 1954) and in food examination (Brown and Gibbons, 1950; Barnes et al, 1956;Mossel et al, 1957), critical reports seem to favor the indicative value of the coli-aerogenes group (Parr, 1938;Kelly and Arcisz, 1954;Gilereas and Kelly, 1955;Thomas et al, 1958). Masinova and Cledova, (1957) studied the biochemical properties of Escherichia coli in water and soil for over 2 years.…”