TABLE OF CONTENTS 



IX 



CHAPTER VI 



GYNANDROMORPHISM, HERMAPHRODITISM, 

 PARTHENOGENESIS, AND SEX 



PAGE 



1. gynandromorphism 161-167 



2. Hermaphroditism 167-173 



3. Parthenogenesis 173-188 



4. Artificial Parthenogenesis 188-193 



CHAPTER VII 



FERTILITY 



1. Inbreeding 191—199 



2. Cross-breeding 200-207 



3. Sexual Reproduction in Paramecium . . . 207-211 



4. Theories of Fertility 211-219 



CHAPTER VIII 



SPECIAL CASES OF SEX-INHERITANCE 



1. Sex in Bees 



2. A Sex-linked Lethal Factor .... 



3. Non-disjunction of the Sex-chromosomes 



4. The Vanishing Males of the Nematodes 



5. Sex-ratios in Hybrid Birds and in Crossed 



Races in Man 



6. Sex-ratios in Frogs 



7. Sex-ratios in Man 



8. The Abandoned View that External Conditions 



Determine Sex ...... 



9. Sex-determination in Man .... 



BIBLIOGRHAPHY 



INDEX 



220-221 

 221-223 

 223-224 

 224-225 



225-227 

 228-229 

 •2-2U-S-V2 



2:»2-23li 

 236-249 



2.") 1-278 

 279 282 



