INDEX, 



225 



Hydroids, migration of germ-cells 

 in, 84 ; reproduction in, 214. 



Idants. definition of, 130 ; number 



of, 146. 

 Idioplasm, 82, 83, 85, 92, 112, 



114. 

 Ids, definition of, 130. 

 Immortality, 74, 78, 87, 209. 

 Infusoria, artificial fission in, 86, 



191 ; conjugation of, 87, 90, 177, 



191. 

 Insecta, polar bodies in, 152. 

 Instincts, 24, 25, 26. 

 Ischikawa, on polar bodies, iir. 

 Isopods, parasitic, 11, 12. 



Jewish musicians, 49. 



Kiwi-kiwi, 3, 4, 5, 28. 

 Klein, on Volvox, 77. 

 KoUiker, criticisms of, 92, 94. 

 Kupflfer, on fertilization, 204. 



Lepidoptera, parthenogenesis in, 



171, 175- 

 Leuckart, on parthenogenesis, 



108, 214. 



Light, penetration of, in water, 8. 

 Limnadia, parthenogenesis of, 



109, 167. 



Liparis, parthenogenesis of, 109, 



171. 

 Liszt, 52. 

 Lotti, 47. 

 Lotze, 80. 



Lowenhoek, on fertilization, 106. 

 Lubbock, on ants, 26, 



Malpighi, on fertilization, 106. 



Martin Luther, 45. 



Maupas, on conjugation, 87, 93, 



177, 183, 189, 196. 

 Micronuclei, function of, 181 ; 



meaning of division of, 185. 

 Minot, on polar bodies, iii. 

 Moa, 5. 



Moina, 88, 89, 206, 217, 

 Moles, loss of sight in, 8 

 Mollusca, number of idants in, 



146. 

 Moscheles, 52. 

 Mozart, 47, 52, 62. 



Music, origin of, 53, 97. 

 Musical sense, 33, 55. 

 Mutilations, not inherited, 41. 



Nageli, on idioplasma, 112, 194. 



Natural selection, 15, 21, 23, 33, 

 35- 



Naumann, 45. 



Negroes, talent for music of, 44. 



Nematodes, number of idants, 

 146. 



Newts, 16. 



New Zealanders, music of, 38. 



Nucleus, significance of, 194. 



Nussbaum, on division in Infu- 

 soria, 86, 191. 



Oncidium, eyes of, 183. 

 Onychodromus, conjugation in, 



185, 187. 

 Ostracoda, parthenogenesis in, 



no, 161, 167, 217 ; polar bodies 



in. III, 152. 

 Ostrich, 5, 6. 

 Ovum, maturation of, 114, 122, 



123, 126, 132 ; in parthenoge- 



netic, 150, 

 Oxytrichidae, 187. 



Palestrina, 45. 



Pandorina, 77, 200. 



Pangenesis, 79, 81, 128. 



Panmixia, 21, 22, 27, 76, 209. 



Paramaecium, reproduction of, 

 177, 185. 



Parasites, 10. 



Parthenogenesis, 91, 108. in, 

 150, 156, 167, 218 ; in Fungi, 

 94, 169; in Ostracoda, no; in- 

 heritance in, 159, 166 ; in Cypris, 

 i6r ; in plants, 169 ; origin of, 

 170? 175; limitation of, 216. 



Pauer, 52. 



Penguin, 6, 10. 



Petromyzon, fertilization of, 204. 



Pfitzner, on nuclear division in 

 Infusoria, 183- 



Pfluger, on parthenogenesis, 108. 



Phryganidae, 19. 



Phyllirhoe, number of idants in, 



134- 

 Phyllopods, 167, 217. 

 Phylloxera, 167, 211. 



