CONTENTS 



INTRODUCTION 



PAGE 



Four questions regarding life i 



The energy concept of life lo 



The four complexes of energy i8 



PART I. THE ADAPTATION OF ENERGY 

 CHAPTER I 



Preparation of the Earth for Life 



The lifeless earth 24 



The lifeless water 34 



The atmosphere 39 



CHAPTER II 



The Sun and the Physicochemical Origins of Life 



Heat and light 43 



Life elements in the sun 45 



Heat and electric energy 48 



The capture of sunlight 51 



Ionization — the electric energy of atoms 53 



Coordination of activities by means of interaction ... 56 



Functions of the chemical life elements 59 



Primary stages of life 67 



xxiii 



