INDEX. 



405 



Formica rufa, size of the cerebral ganglia 

 in, i. 139. 



Fossrts, absence o^ connecting man with 

 tho apes, i. 193. 



Fowl, occurrence of spurs in the female, 

 1. 271 ; game, early pugnacity o^ i. 285 ; 

 Polish, early development of cranial pe- 

 culiarities ot, i. 285; variations in plu- 

 mage o^ ii. 71; examples of correlated 

 development in the, ii. 124; domestic, 

 breeds and subbreeds of, ii. 168. 



Fowls, 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. 284 ; 

 cuckoo-, i. 285; development of the 

 comb in, i. 285; 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, 

 U.155. 



Fox, W. C, on some half-tamed vrild- 

 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. 98 ; on the finding 

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

 tridges hving 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. 48 ; black, ii. 280. 



Feakce, numerical proportion of male and 

 female births in, i. 292. 



Francesco, B., on the Simian resemblances 

 of man, i. 4. 



Fraser, C, on the different colors of the 

 sexes in a species ot Squilla, i. 326. 



Fringilla cannaMna, ii. 82. 



Fringilla dris, age of matui'e plumags in, 

 ii. 204. 



Fringilla cyanea, age of mature plumage 

 in, ii. 204. 



Fringilla leucophrys, young o^ ii. 208. 



Fringilla spinus, ii. 110. 



Fringilla tristis, change of color in, in 

 spring, ii. 82 ; young of; ii. 207, 



FR1NGILLID.E, resemblance of the females 

 of distinct species o£ ii. 184. 



Frogs, ii. 24 ; male, temporary receptacles 

 for ova possessed by, i. 246; ready to 

 breed before the females, i. 252; vocal 

 organs of ii. 28. 



Frontal bone, persistence of the suture 

 in, i. 120. 



Fkitits, poisonous, avoided by animals, i. 



FuEGiANS, i. 160, 174; mental capacity of 

 the, i. 83 ; quasi-reliipous 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, m mental characters, to Euro- 

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

 face, ii. 332; said to admire Em-opean 

 women, ii. 334. 



FtTLGORiD.!;, songs of the, i. 340. 



FuK, whiteness of, in arctic animals, in 

 winter, i. 273. 



Fur-bearing animals, acquired sagacity 

 of, i. 48. 



G. 



GalUcrex, sexual difference in the color of 

 the irides in, ii. 123. 



Gallierex cristatuj), red caruncle occurring 

 in the male during the breeding-season, 

 ii. 76. 



GALLINACE.E, frequency of polygamous 

 habits and of sexual differences in 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 oi, ii. 184, 185; plu- 

 mage of, ii. 187. 



Gallinaceous birds, weapons of the male, 

 ii. 42; racket-shaped feathers on the 

 heads oi; ii. 70. 



Gallinula chUrropus, pugnacity of male, 

 ii. 38. 



Gallinula crislata, pugnacity of the male, 

 ii. 39. 



Galloperdia; spurs of ii. 44 ; development 

 of spurs in the female, ii. 155. 



Gallophasis, young of ii. 182. 



Gallus banH-va, ii. 151 ; neck-hackles o^ 

 ii. 81. 



Gallus Stanleiji, 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. 172 ; 

 on South Aiiican notions of beauty, ii. 

 331. 



Gammarus, use of the chelae of, i. 331. 



Gammarus marin us, i. 323. 



Gannets, white only when mature, ii. 218. 



Ganoidei, i. 196. 



Ganoid fishes, 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 rationaUty in a 

 Gelasimns, i. 324. 



Garrulus glandarixi^, ii. 100. 



Gartner, on sterihty of hybrid plants, L 

 215. 



