Reactions of colon group, 108.
Reaction of culture media, 94.
of sludge and mud, 73.
Reduction method (nitrate), 24.
Relative stability method, 71.
Residue on evaporation, 29.
Results, expression of,
bacteriological, 103.
chemical examination, 14.
color, 8.
odor, 12.
Results, interpretation of (bacteriological), 106.
Routine procedure (bacteriological), 108.