INDEX. 



525 



Divergence of character, 101. 

 Dog, resemblance of jaw to that 



of the Thylacinus, 441. 

 Dogs, hairless, with imperfect 



teeth, 11. 

 ' descended from several wild 



stocks, 17. 



, domestic instincts of, 248. 



, inherited civilization of, 



248. 



, fertility of breeds together, 



283. 



, of crosses, 302. 



, proportions of body in dif- 

 ferent breeds, when young, 

 461. 



Domestication, variation under, 6. 



Double flowers, 271. 



Downing, Mr, on fruit-trees in 

 America, 78. 



Dragon flies, intestines of, 175. 



Drift-timber, 885. 



Driver-ant, 274. 



Drones killed by other bees, 194. 



Duck, domestic, wings of, re- 

 duced, 10. 



, beak of, 217. 



, logger headed, 166. 



Duckweed, 407. 



Dugong, affinities of, 431. 



Dung-beetles with deficient tarsi, 

 129. 



Dytiscus, 407. 



Earl, Mr. W., on the Malay 



Archipelago. 415. 



Ears, drooping, in domestic ani- 

 mals, 10. 



, rudimentary, 473. 



Earth, seeds in roots of trees, 885. 



charged with seeds, 387. 



Echinodermata,their pedicellariae, 

 225. 



Eciton, 272. 



Economy of organization, 139. 



Edentata, teeth and hair, 137. 



, fossil species of, 492! 



Edwards, Milne, on physiological 

 division of labor, 105. 



— — , on gradations of structure, 

 185. 



Edwards, on embryological char- 

 acters, 434. 



Eggs, young birds escaping from, 

 80. 



Egypt, productions of, not modi- 

 fied, 200. 



Electric organs, 178. 



Elephant, rate of increase, 60. 

 , of Glacial period, 135. 



Embryology, 455. 

 Eozoon Canadense, 339. 

 Epilepsy inherited, 128. 

 Existence, struggle for, 57. 



, condition of, 198. 



Extinction, as bearing on natural 

 selection, 115. 



, of domestic varieties. 111. 



,347. 



Eye, structure of, 171. 



Eye, correction for aberration, 



194, 

 Eyes, reduced, in moles, 130. 



Fabre, M., on hymenoptera fight- 

 ing, 82. 



— — , on parasitic sphex, 255. 



, on Sitaris, 465. 



Falconer, Dr., on naturalization 

 of plants in India, 61. 



on elephants and mastodons, 



861. 



and Cautley, on mammals of 



sub-Himalayan beds, 368. 



Falkland Islands, wolf of, 414. 



Faults, 317. 



Faunas, marine, 374. 



Fear, instinctive, in birds, 249. 



Feet of birds, young molluscs ad- 

 hering to, 407. 



Fertilization variously effected, 

 183, 191. 



Fertility of hybrids, 280. 



, from slight changes in con- 

 ditions, 296. 



of crossed varieties, 301. 



Fir-trees destroyed by cattle, 67. 



, pollen of, 195. 



Fish, flying, 166. 



, teleostean, sudden appear* 



ance of, 836. 



, eating seeds, 886, 408. 



