CHEMICAL BIBLIOGRAPHY 82 MICROSCOPICAL EXAMINATION 89 MICROSCOPICAL BIBLIOGRAPHY 91 BACTERIOLOGICAL EXAMINATION 92 APPARATUS 92 SAMPLE BOTTLES 92 PIPETTES 92 DILUTION BOTTLES 92 PETRI DISHES 92 FERMENTATION TUBES 92 MATERIALS 93 WATER 93 MEAT EXTRACT 93 PEPTONE 93 SUGARS 93 AGAR 93 GELATIN 93 LITMUS 93 GENERAL CHEMICALS 93 METHODS 93 PREPARATION OF CULTURE MEDIA 93 TITRATION 93 STERILIZATION 94 NUTRIENT BROTH 95 SUGAR BROTHS 95 NUTRIENT GELATIN 95 NUTRIENT AGAR 96 LITMUS OR AZOLITMIN SOLUTION 96 LITMUS-LACTOSE-AGAR 97 ENDO’S MEDIUM 97 COLLECTION OF SAMPLE 98 STORAGE AND TRANSPORTATION OF SAMPLE 98 DILUTIONS 98 PLATING 99 INCUBATION 99 COUNTING 99 THE TEST FOR THE PRESENCE OF MEMBERS OF THE B. COLI GROUP 100 PRESUMPTIVE TEST 100 PARTIALLY CONFIRMED TEST 101 COMPLETED TEST 102 APPLICATION OF THESE TESTS 102