CONTENTS xv 



PART IX 



BIPOLARITY IN LIVING AND NOT-LIVING MATTER 



CHAPTER XXXII PAGE 



SEXUALITY ......... 213 



Artificial Parthenogenesis Fecundation 



CHAPTER XXXIII 



ALTERNATING GENERATION . . . . . .221 



CHAPTER XXXIV 



KARYOKINESIS, OR INDIRECT CELLULAR DIVISION . . 224 



CHAPTER XXXV 

 HEREDITARY PATRIMONIES IN FECUNDATION . . 228 



Secondary Sexual Characters 



PART X 

 FORMATION OF SPECIES AND APPEARANCE OF LIFE 



CHAPTER XXXVI 

 CONTINUOUS AND DISCONTINUOUS EVOLUTION . . 233 



Mutations 



CHAPTER XXXVII 

 THE SPECIES 23 9 



