RT II Contents ix 



PART II 



The Powers of Life 



CHAPTER VIII 



VITALITY 



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

 4. Cells, the elements of life — S- 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 



1. General usage of the term — 2. Careful usage of the term — 3. 

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



