viii CONTENTS 



CHAPTER * 



XIX. ON THE METHODS COMMONLY USED IN THE HEATING OF 



MILK 293 



XX. ON THE PRESENCE OF PATHOGENIC BACTERIA IN 



BUTTER AND CHEESE 305 



APPENDICES 



t CHAPTER 



VIII. A. As TO THE DEVELOPMENT OF THE MAMMARY FUNC- 

 TION . . . . . . . .'-; 39 



B. ON THE SUBSEQUENT DEVELOPMENT OF THE ORGANISM 



IN RELATION TO THE METHOD OF FEEDING IN EARLY 

 LIFE 311 



C. ON THE PRESERVATION OF HUMAN MILK . . 315 



XI. D. TABLES AND ADDITIONAL DATA RELATING TO THE 



BERLIN MATERIAL . . . . .315 



XIX ) E * THE MlLK - DEPOTS OF ENGLAND v . . .321 



XII. F. ON THE METHODS EMPLOYED IN THE DESICCATION OF 



MILK . . . . , .; . *: . . 322 



XVII. G. NOTES ON THE GRADING OF MILK . , . . 325 

 XIX. H. ON METHODS USED FOR THE DESTRUCTION OF BACTERIA 



IN MlLK WITHOUT THE APPLICATION OF HEAT . 327 



INDEX . . . , . . . J . 331 



LIST OF PLATES 



PLATE 



I. i. SHOWING A FAIRLY TYPICAL FIELD WITH\ 



VARIETIES OF CELLS. I Facing p. 136 



2. SHOWING INDIVIDUAL CELL TYPES . . ) 



II. i. SHORT CHAINS OF STREPTOCOCCI 



2. LONG CHAINS OF STREPTOCOCCI . 



III. THE SAME (from Ernst's Textbook of Milk 



Hygiene) . . . . . . . 



IV. MILKING SHED, AS DESCRIBED IN TEXT . 272 



V. MILKING MACHINE .....,,,, 274 



VI. BOTTLING PLANT. THE COOLER is SHOWN 

 ABOVE THE APPARATUS FOR BOTTLING. 

 THE MILK PASSES STRAIGHT FROM THE 

 COOLER TO THE TANK PLACED ABOVE THE 

 BOTTLES ,, 280 



VII. A PASTEURISING PLANT, SHOWING SUPPLY 



TANK AND HEATING APPARATUS TO THE 

 RIGHT, WITH COOLER ABOVE ; ALSO 

 BOTTLING ARRANGEMENTS . . . ,, 299 



VIII. SHOWING THE METHOD USED IN ELECTRICAL 



TREATMENT OF MILK . . . . 328 



