CONTENTS 



CHAPTER I 



THE NATUEE OF ANIMAL LIFE 



PAGE 



The organism as a structure — Structural differences — Structure and 

 function — Integration of activities — Co-ordination of activities 

 — The organism and the State - .... 1 



CHAPTER II 



THE SENSOEI-MOTOK SYSTEM 



The meaning of organic movement — Mobility patterns — The sensori- 

 motor system — The motor organs — The sensory mechanisms — 

 The nervous links — An example of sensori-motor activity - 9 



CHAPTER III 



THE PRINCIPLES OF ENERGY 



The nature of a material body — Modern theories of matter — The 

 capacity for doing work — Energy — The diminution of available 

 energy — Energy in the abstract — Potential and kinetic energy — 

 Releasing transformations — The principle of becoming - - 31 



CHAPTER IV 



THE SOURCES OF ENERGY 



The inanimate engine — The animate engine — Digestive process in 

 animals — The foodstuffs — Absorption and distribution — The 

 respiratory interchange — The sources of energy — The removal 

 of waste — Glandular activity - - - - - 55 



CHAPTER V 



ON VITAL PRODUCTION 



Animal metabolism — The fate of the proteid residues — Plant meta- 

 bolism — The balance of life — Production and consumption - 76 



