CONTENTS 

 PART I 



PAGE 



THE COMPOSITION, DIGESTION, AND UTILISA- 

 TION OF FEEDING-STUFFS . I 



CHAPTER I 



THE COMPOSITION OF FEEDING-STUFFS . . .3 



1. Water ....... 4 



2. The proteins . . . . . .5 



3. Non-protein nitrogenous substances . . .8 



4. The fats and oils . . . . .10 



5. Crude fibre . . . . . .12 



6. The nitrogen-free extract . . . .14 



7. Mineral substances or ash . . . . 15 



CHAPTER II 



THE DIGESTION OF THE FOOD . . . .18 



1. Mastication . . . . . .18 



2. The processes of digestion . . . .21 



3. The determination of the digestibility of foods . 27 



4. The extent of digestion under various conditions . 31 



CHAPTER III 



THE UTILISATION OF DIGESTED NUTRIENTS IN THE 



ANIMAL BODY . . . . . .41 



1. General considerations . . . . . 41 



2. Methods of investigation . . 44 



3. The energy metabolism . . . .48 



