INDEX. 



405 



Formica rufa, size of the cerebral ganglia 

 in, i. 139. 



Fossils, absence of, connecting man with 

 the apes, i. 193. 



Fowl, occurrence of spurs in the female, 

 i. 2T1 ; game, early pugnacity of, i. 2S5 ; 

 Polish, early development of cranial pe- 

 culiarities of, i. 285; variations in plu- 

 mage, of ii. 71 ; examples of correlated 

 development in the, ii. 124; domestic, 

 breeds and subbreeds of, ii. 16S. 



Fow r LS, spangled Hamburg, i. 272, 284; 

 sexual peculiarities in, transmitted only 

 to the same sex, i. 274 ; loss of secondary 

 sexual characters by male, i. 275 ; inher- 

 itance of changes of plumage by, i. 272 ; 

 Polish origin of the crest in, i. 275 ; period 

 of inheritance of characters by, i. 2S4 ; 

 cuckoo-, i. 2S5; development of the 

 comb in, i. 2S5; numerical proportion of 

 the sexes in, i. 296; courtship of, ii. 112; 

 mongrel between a black Spanish cock 

 and different hens, ii. 125; pencilled 

 Hamburg, difference of the sexes in, ii. 

 151 ; Spanish, sexual differences of the 

 comb in, ii. 151 ; spurred, in both sexes, 

 ii. 155. 



Fox. W. D., on some half-tamed wdld- 

 ducks becoming polygamous, and on 

 polygamy in the guinea-fowl and canary- 

 bird, i. 261 ; on the proportion of the 

 sexes in cattle, i. 295 ; on the pugnacity 

 of the peacock, ii. 43 ; on a nuptial as- 

 sembly of magpies, ii. 9S ; on the finding 

 of new mates by crows, ii. 100; on par- 

 tridges living in triplets, ii. 103; on the 

 pairing of a goose with a Chinese gander, 

 ii. 110. 



Foxes, wariness of young in hunting dis- 

 tricts, i. 4S ; black, ii. 280. 



France, numerical proportion of male and 

 female births in, i. 292. 



Francesco, L>., on the Simian resemblances 

 of man. i. 4. 



Fraser, C, on the different colors of the 

 sexes in a species of Stjuilla, i. 326. 



FringUla cannabina, ii. 82. 



Frincfilla ciris, age of mature plumage in, 

 ii. 204. 



FringUla cyanea, age of mature plumage 

 in, ii. 204. 



FringUla leucophnjs, young of, ii. 208. 



FringUla sjrinus, ii. 110. 



FringUla tristis, change of color in, in 

 spring, ii. S2 ; young of, ii. 207, 



Fringillid.e, resemblance of the females 

 ofdistinct species of, ii. 1S4. 



Frogs, ii. 24 ; male, temporary receptacles 

 for ova possessed by, i. 246; ready to 

 breed before the females, i. 252; vocal 

 organs of. ii. 2S. 



Frontal bone, persistence of the suture 

 in. i. 120. 



Feu its, poisonous, avoided by animals, i. 

 85. 



Fuegians, i. 160, 174; mental capacity of 

 the, i. 33 ; quasi-religious sentiments of 

 the, i. 65; power of sight in the, i. 114; 



skill of. in stone-throwing, i. 156; resist- 

 ance of the, to their severe climate, i. 

 150, 229 ; difference of stature among the, 

 i. Ill ; mode of life of the, i. 237; resem- 

 blance of. in mental characters, to Euro- 

 peans, i. 223 ; aversion of, to hair on the 

 face, ii. 332; said to admire European 

 women, ii. 334. 



Fulgorid.e, songs of the, i. 340. 



Fur, whiteness of, in arctic animals, in 

 winter, i. 273. 



Fur-bearing animals, acquired sagacity 

 of, i. 48. 



G. 



Gallicrex, sexual difference in the coloi of 

 the hides in, ii. 123. 



Gallicrex cristatu.% red caruncle occurring 

 in the male during the breeding-season, 

 ii. 76. 



Gallinace^e, frequency of polygamous 

 habits and of sexual differencesin the, i. 

 260 ; love-gestures of, ii. 65 ; decomposed 

 feathers in, ii. 70 ; stripes of young, ii. 

 176; comparative sexual differences be- 

 tween the species of, ii. 1S4, 1S5; plu- 

 mage of, ii.' 187. 



Gallinaceous birds, weapons of the male, 

 ii. 42; racket-shaped feathers on the 

 heads of, ii. 70. 



Gall inula chloropus, pugnacity of male, 

 . ii. 3S. 



Gall inula cristata, pugnacity of the male, 

 ii. 39. 



Galloper 'dix, spurs of, ii. 44 ; development 

 of spurs in the female, ii. 155. 



Gallophasis, young of, ii. 1S2. 



Gallus bankiva, ii. 151 ; neck -hackles of, 

 ii. SI. 



Gallus Starileyi, pugnacity of the male, ii. 

 42. 



Galls, i. 146. 



Galton, Mr., on the struggle between the 

 social and personal impulses, i. 99 ; on 

 hereditary genius, i. 106; on the effects 

 of natural selection on civilized nations, 

 i. 161; on the sterility of sole daughters, 

 i. 164; on the degree of fertility of people 

 of genius, i. 165; on the early marriages 

 of the poor, i. 167; on the ancient Greeks 

 i. 171; on the Middle Ages, i. 171; on 

 the progress of the United States, i. 1 72 ; 

 on South African notions of beauty, ii. 

 331. 



Gammamis, use of the chelre of, i. 331. 



Garnmarus mari?ius, i. 323. 



Gannets, white only when mature, ii. 218. 



Ganoidei, i. 196. 



Ganoid fisbes, i. 204. 



Gaour, horns of the, ii. 236. 



Gap between man and the apes, i. 192. 



Gaper, sexes and young of, ii. 208. 



Gardner, on an example of rationality in & 

 Gelasimiis, i. 324. 



Garrulus glanclarius, ii. 100. 



Gartner, on sterility of hybrid plants, L 

 215. 



