TABLE OF CONTENTS XV11 



PAGB 



Water analysis 299 



The purification of water 301 



Sewage 302 



The purification of sewage 302 



CHAPTER XXVIII 

 THE BACTERIA OF MILK AND ITS PRODUCTS 



Introduction 305 



The bacteria of the udder 305 



The number of bacteria in market milk 305 



The source of bacteria in milk 306 



The contamination of the milk from the animal .... 307 



The entrance of bacteria into the milk from the air . . . . 307 



Cleanliness of milking utensils 308 



The milker 308 



The care of the milk ......... 309 



CHAPTER XXIX 

 THE BACTERIA OF MILK AND ITS PRODUCTS ( Continued} 



The species of bacteria in milk 311 



Lactic acid bacteria 311 



Slimy milk 312 



Blue milk 313 



Red milk 313 



The disease-producing bacteria in milk 314 



Pathogenic bacteria in milk after it is drawn 316 



Typhoid 316 



Asiatic cholera 317 



Diphtheria 317 



Scarlet fever 318 



CHAPTER XXX 

 THE BACTERIA OF THE HUMAN BODY 



Introduction 319 



The bacteria of the skin and exposed mucous membranes . . 319 



The bacteria of the mouth 322 



Dental caries ........... 326 



The bacteria of the stomach and intestines 327 



