EOQS. 



INDEX. 



FEIGATE-BIRD. 



327 



in^' ^"""S ''''■'^^ escaping from, i. 



Egypt, productions of, not modified, 



1. 263. 

 Electric organs, i. 234. 

 l-lepliant, rate of increase, i. 80. 

 - — , of Glacial period, i. 176. 

 iljDibryology, ii. 239. 

 Eozoon Canadense, ii. 84. 

 Epilepsy inherited, i. 167. 

 Existence, struggle for, i 75. 

 ——, condition of, i. 261. 

 Extinction, as bearing on natural 



selection, i. 150. 



of domestic varieties, L 145. 



, ii. 94. 



Eye, structure of, i. 225. 



, correction for aberration, i. 255. 



Eyes, reduction in moles, L 170. 



Fabre, M., on hymenoptera fight- 

 ing, i. 108. 



, on parasitic sphex, i. 336. 



, on Sitaris, iL 252. 



Falconer, Dr., on naturalisation of 

 plants in India, i. 80. 



, on elephants and mastodons, 



ii. 113. 



and Cautley, on mammals of 



sub-Himalayan teds, ii. 122. 



Falkland Islands, wolf of, ii. 183. 



Faults, ii. 54. 



Faunas, marine, ii. 131. 



Fear, instinctive, in birds, i. 329. 



Feet of birds, young molluscs ad- 

 hering to, ii. 174. 



Fertilisation variously effected, i. 

 241, 252. 



Fertility of hybrids, iL 6. 



, from slight changes in condi- 

 tions, ii 28. 



. of crossed varieties, ii. 34. 



f"ir-trees destroyed by cattle, i. 88. 



, pollen of, 1. 257. 



Fish, flying, i. 218. 



, teleostean, sudden appearance 



of, ii. 81. 



eating seeds, ii. 146, 175. 



, fresh-water, distribution of. 



Fishes, ganoid, now continea to 



fresh water, i. 130. 



, electric organs of, i. 234. 



■ , ganoid, living in fresh water, 



u. 99. 



Fishes, of southern hemisphere, ii 



164. 

 Flat-fish, their structure, i. 290. 

 Flight, powers of, how acquired, i. 



218. 

 Flint-tools, proving antiquity of 



man, i. 21. 

 Flower, Prof, on the Larynx, i. 297. 



, on Halitherium, ii. 108. 



, on the resemblance between 



the jaws of the dog and Thyla- 



cinus, ii. 220. 

 , on the homology of the feet of 



certain marsupials, ii. 232. 

 Flowers, structure oi, in relation to 



crossing, i. 114. 

 , of oompositae and umbelli- 



ferae, i. 179, 270. 



, beauty of, i. 252. 



, double, i. 358. 



Flysch formation, destitute of or- 

 ganic remains, ii. 59. 

 Forbes, Mr. D.j on glacial action in 



the Andes, ii. 160. 



, E., on colours of shells, i. 165. 



, on abrupt range of shells in 



' depth, i. 210. 



, on poorness of palseontological 



collections, Ii. 58. 

 , on continuous succession of 



genera, ii. 93. 

 , on continental extensions, ii 



140, 141. 

 -, on distribution during Glacial 



period, ii. 152. 

 , on parallelism in time and 



space, ii. 200. ' 



Forests, changes in, in America, i. 



91. 

 Formation, Devonian, ii. 113. 



, Cambrian, ii. 84. 



Formations, thickness of, in Britain, 



iL 5S. 



, intermittent, ii. 69. 



Formica, rufesoens, i. 836. 



, sanguinea, L 338. 



, flava. neuter of, i. 860. 



Forms, lowly organised, long en- 

 during, i. 154. 

 Frena, ovigerous, of cirripedes, i. 



232. 

 Fresh-water productions, dispersal 



of, ii. 171. 

 Fries, on species in large genera 



being closely allied to other spe- 

 cies, 1. 71. 

 Frigate-bird, i. 222. 



