332 



Index. 



Heredity, speculations on, 18 

 " meaning of word, 6 

 " proper subject for 



study, 12 



" how caused, 81 

 Hinney, 127 



Hippocrates on viragines, 105 

 Holmgrim on pigeon, 93 

 Homology of ovum and male 



cell, 102 



" significance of, 307 

 Hornbill, 201 



Horse and ass, hybrid from, 127 

 " in mines, 91 

 " reversion in, 10, 133 

 Humming bird, 201 

 Hunter on latent transmission, 



109 



" on sea-gull, 92 

 Huxley on evolution and epi- 



genesis, 46 

 " on reciprocal crosses, 



127 

 ' ' on saltatory evolution, 



83, 296 



" on transmission by 

 each sex, 100, 102, 

 103 



Hybrids, argument from, 99 

 " evidence from, 118 

 " summary of chapter 



on, 137 



" variation of, 18 

 Hydroids, budding in, 11 

 " heredity in, 113 



,Ibla, 182 



Inheritance of a tendency, 88 

 Insects, sexual differences in, 

 189 



Intellectual differences between 

 men and women, 242 



Jager on heredity, 41, 45, 85 

 Jurine on parthenogenesis, 57 



Kipp on parthenogenesis, 59 

 Kirtland on variation of cherry, 



189 

 Kolreuter on hybrids of mira- 



bilis, 120 



Latent transmission of sexual 



characters, 104, 117 

 Leckey on male and female 



mind, 269 

 Leptodora, parthenogenesis in, 



57 



Leydig on rotifera, 171 

 Life, definition of, 39 

 Life and memory, 38 

 Lion, hybrid from with tiger, 



130 

 Lizards, sexual differences in, 



198 



Lyell on variation of dog, 150 

 Loerwenhoeck, discovery of 



spermatozoa, 21 

 Lubbock on parthenogenesis, 



57 

 Lucifer, sexual differences in, 



184 



Male mind progressive, 257 



Male more eager than female, 

 230 



Male and female types of char- 

 acter, 259 



Male cell, properties of, 81 

 " functions of, 84 



