IV CONTENTS. 



PACE 

 HYPOTHESIS OF THE DEVELOPMENT OF THE VEGETABLE AND 



ANIMAL KINGDOMS 112 



AFFINITIES AND GEOGRAPHICAL DISTRIBUTION OF ORGANISMS 147 



EARLY HISTORY OF MANKIND 211 



MENTAL CONSTITUTION OF ANIMALS 236 



PURPOSE AND GENERAL CONDITION OF THE ANIMATED CREA- 

 TION 255 



NOTE CONCLUSORY 274 



NOTES . , 279 



ERRATUM. 

 Page 56, last line for " four," read " fore." 



