Contents ix 



PART II 

 I 



THE POWERS OF LIFE 



CHAPTER VIII 



VITALITY 



i. The task of physiology 2. The seat of life 3. The energy of life 

 4. Cells , the elements of life 5. The machinery of life 6. Proto- 

 plasm 7. The chemical elements of life 8. Growth 9. Origin 

 of life . . . . . . Pages 125-142 



CHAPTER IX 



THE DIVIDED LABOURS OF THE BODY 



Division of labour 2. The functions of the body: Movement; 

 Nutrition; Digestion; Absorption; The work of the liver and 

 the kidneys ; Respiration ; Circulation ; The changes within the 

 cells ; The activities of the nervous system 3. Sketch of 

 Psychology . ^ . , . . . 143*152 



CHAPTER X 



INSTINCT 



T. General usage of the term 2. Careful usage of the term 3. 



Examples of instinct 4. The origin of instinct . -153-166 



