Xll CONTENTS 



PAGB 



Structure of the blood-vessels 47 



The lymph 57 



CHAPTER VII. 



THE PHYSIOLOGY OF DIGESTION AND ABSORPTION 63 



Foods 63 



Digestion 68 



Prehension 70 



Digestion in the mouth 71 



The salivary glands and their secretion 71 



Deglutition 78 



Digestion and absorption in the stomach 81 



The gastric glands 85 



Digestion and absorption in the intestines 96 



The small intestine 96 



The large intestine 117 



Absorption in general * . . . 122 



Absorption from the alimentary canal 126 



CHAPTER VIII. 



RESPIRATION 131 



Anatomy of the respiratory organs 132 



Mechanism of respiration 138 



CHAPTER IX. 



NUTRITION, DIETETICS AND ANIMAL HEAT 171 



Nutrition 171 



Dietetics 181 



Animal heat 184 



CHAPTER X. 



EXCRETION 192 



The kidneys 192 



The skin 208 



CHAPTER XI. 



THE NERVOUS SYSTEM 214 



The cerebro-spinal system 235 



