CONTENTS 

 PART I 



CHAPTER PAGE 



INTRODUCTION IX 



I THE ECONOMY OF NATURE I 



II THE LAW OF CONCORD IN NATURE - 23 



III THE ORIGIN OF MORALITY 45 



IV EVOLUTIONAL PSYCHOLOGY 63 

 V THE " INTELLIGENCE " OF PLANTS - 82 



VI LIFE AND HABIT 94 



PART II 



I " NORMALS " 121 

 II LA VIE NORM ALE 124 



III THE VALUE OF ABSTEMIOUSNESS - I2Q 



IV PARASITISM V. SYMBIOSIS - 131 

 V THE LAW OF SYMBIOTIC MODERATION - 139 



VI THE BIO-ECONOMICS OF INTERNAL SECRETIONS 146 



VII THE LAW OF THE MEMBERS - I5O 



VIII " PATHOLOGIA PHYSIOLOGIAM ILLUSTRAT " - 153 



IX FOR " PROFESSIONAL " SERVICES RENDERED - l6l 



PART III 



I " CONTRE-EVOLUTION " - 167 



II " ARBOREAL MAN " - 212 

 Til MALADIE ET SYMBIOSE - 236 



INDEX ... - 289 



