Index. 



455 



Hartmann, on flattening of early 

 human tibiae, 96. 



Harvey, on Lord Bacon's writings, 

 2. 



Heart, development of, 154. 



Heilprin, on skulls of deer, 198, 

 199; on fossil shells, 201, 202. 



Hen, ovum of, 122. 



Heredity, in relation to classifica- 

 tion, 28-31 ; in relation to em- 

 bryology, 98-102 ; chromatin- 

 fibres in relation to, 1 34 ; in 

 relation to theories of organic 

 evolution, 253-255, 260-264, 



Hermit-crabs, 62-65, 2 ^8, 289. 



Heteromera, 233 



Hilgendorf, on shells of Planorbis, 



201. 



Ifipparion, 191, 192. 

 Hippopotamus, foot of, 187. 

 Hog, see Pig. 

 Homology, 38, 50-65, 176, 177, 



347-35. 357-359- 



Homopterous insect, imitating 

 leaf-cutting ants, 331, 332. 



Hooker, Sir Joseph, on flora of 

 St. Helena, 234. 



Horns, 98-100, 167-169. 



Horse, eye of, 75 ; limb-bones of, 

 i?6, 177, 186, 188-192; teeth 

 of, 189-191 ; portraits of do- 

 mesticated breeds of, 309. 



Human, see Man. 



Humerus, perforations of, in qnad- 

 rumana and man, 94, 95. 



Humming-birds, restricted to the 

 New World, 211. 



Hunter, 3 ; on ear of whale, 65. 



Huxley, Prof., on mechanical se- 

 lection, 283; on age of the earth, 

 435, 436 ; on Dr. Whewell, 243. 



Hyatt, on shells of Planorbis, 201. 



Hydra, in, 122. 



Hyrax, foot of, 185, 186. 



I. 

 Ignorance, argument from, 41, 42, 



49- 



Illative Sense, 6. 

 Imitative colours, 317-323, 326- 



332- 



Infant, feet of, 78, 79; grasping 

 power of, 81. 



Infertility, inter-specific, in relation 

 to natural selection, 374-376. 



Insects, wingless, 68-70; in pri- 

 mary formations, 163, Appendix ; 

 on oceanic islands, 224-238; in 

 relation to galls, 293-295, 446- 

 448; defensive colouring of, 321- 

 332 ; fertilizing flowers, 406. 



Instincts, always of primary use to 

 species presenting them, 286-293. 



Intercrossing, in relation to natural 

 selection, 374-376. 



Inutility of specific characters, in 

 relation to natural selection, 



374-37 6 - 



Islands, oceanic, 224-237; British, 

 238-241. 



J- 



Japan, hairless dog of, 101. 

 Jelly-fish, 119, 120. 



Kallima, 323. 



Karyokinesis, 112-114, 128-134. 



Kepler, 272. 



Kerguelen Island, flightless in- 

 sects of, 70. 



Kropotkin, Prince, on co-operative 

 instincts, 269. 



Lagopus mutus, 317. 318. 



Lamarck, his method in natural 

 history, 4 ; his theory of evolu- 

 tion, 253-256. 



Lamprey, 148. 



Languages, classification of, re- 

 sembles that of organic forms, 

 32. 



Lankester, E. Ray, on karyo- 

 kinesis, 129, 130. 



Leaf insect, 322. 



Le Conte, on geological succession 

 of animal classes, 164, 165; on 

 types of tails, 169-173 ; on fossil 

 shells of Planorbis, 201 ; his 

 work on the relation of the 

 theory of evolution to religious 

 thought, 412. 



