CONTENTS xvii 



LESSON III 



PAGE 



EXAMINATION OF WATER 



I. Quantitative Examination. 



A. Tap Water 



(a) Plate Culture Method ...... 93-95 



(6) Roll Tubes . . . 95, 96 



B. Distilled Water 96 



C. Tank Water 96 



D. Effect of Sunlight on Water 97 



LESSON IV 



EXAMINATION OF WATER (continued) 



II. Qualitative Examination. 



A. Bacillus of Enteric Fever and Bacterium coli commune 98-100 



LESSON V 



EXAMINATION OF WATER (concluded) 

 //. Qualitative Examination (concluded). 



B. Vibrio cholerse Asiatics? 



I. Peptone Method 101-103 



II. Gruber's Method 103 



III. Agar-Agar Plates . ... 103, 104 



IV. Gelatine Plates 104 



LESSON VI 



EXAMINATION OF MILK 



/. Quantitative Examination . . , . , . 105 

 //. Qualitative Examination 



(1) Bacillus of Enteric Fever . . ... 106 



