B. 



PART IIL 



THE NUTEITION OF THE TISSUES. 



SECTION I. 



Food. 



The Nature of Food 



A. Food-Stuffs Yielding Energy 



1. Nitrogenous Compounds 



2. Fats and Allied Bodies 



3. Carbohydrates 



B. Food-Stuffs not Yielding Energy 



4. Ash (Inorganic Elements) 



5. "Water 



6. Accessory Factors 

 Classification of Feeding Stuffs for Herbivora 



2S3 



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SECTION II. 

 Digestion. 



I. Structure of the Alimentary Canal 

 II. Phy.siology .... 

 A. Digestion in Carnivora and Omnivora 

 I. Digestion in the Mouth . 

 (a) Mastication . 

 (6) Insalivation . 

 II. Swallowing 

 III. Digestion in the Stomach 



A. Stomach during Fasting 



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 309 



