IV CONTENTS, PAGE ERA OF THE SUPERFICIAL FORMATIONS COMMENCE MENT OF PRESENT SPECIES 135 GENERAL CONSIDERATIONS RESPECTING THE ORIGIN OF THE ANIMATED TRIBES 147 PARTICULAR CONSIDERATIONS RESPECTING THE ORIGIN OF THE ANIMATED TRIBES 170 HYPOTHESIS OF THE DEVELOPMENT OF THE VEGETABLE AND ANIMAL KINGDOMS 195 THE HYPOTHESIS CONSIDERED IN CONNEXION WITH THE AFFINITIES AND GEOGRAPHICAL DISTRIBUTION OF ORGANISMS 244 EARLY HISTORY OF MANKIND 286 MENTAL CONSTITUTION OF ANIMALS 331 PURPOSE AND GENERAL CONDITION OF THE ANIMATED CREATION 367 NOTE CONCLUSORY 404
