INDEX. 



635 



Formica rufa, size of the cerebral 

 ganglia in, 52. 



Fossils, absence of, connecting 

 man with the apes, 162. 



Fowl, occurrence of spurs in the 

 female, 223; game, early pug- 

 nacity of, 233; Polish, early de- 

 velopment of cranial peculiari- 

 ties of, 234; variations in plum- 

 age of, 380; examples of corre- 

 lated development in the, 420; 

 domestic, breeds and subbreeds 

 of, 464. 



Fowls, spangled Hamburgh, 224, 

 233; inheritance of changes of 

 plumage by, 224; sexual peculi- 

 arities in,transmitted only to the 

 same sex, 225; loss of second- 

 ary sexual characters by male, 

 226; Polish, origin of the crest 

 in, 226; period of inheritance of 

 characters by, 233; cuckoo, 233; 

 development of the comb in, 233; 

 numerical proportion of the 

 sexes in, 242; courtship of, 411; 

 mongrel, between a black Span- 

 ish cook and different hens, 

 421; penciled Hamburgh, differ- 

 ence of the sexes in, 441; Span- 

 ish, sexual differences of the 

 comb in, 441; spurred, in both 

 sexes, 443. 



Pox, W. D., on some half-tamed 

 wild ducks becoming polygam- 

 ous, and on polygamy in the 

 guinea-fowl and canary-bird, 

 215; on the proportion of the 

 sexes in cattle, 241; on the pug- 

 nacity of the peacock, 360; on a 

 nuptial assembly of magpies, 

 401; on the finding of new mates 

 by crows, 402; on partridges liv- 

 ing in triplets, 404; on the pair- 

 ing of a goose with a Chinese 

 gander, 409. 



Foxes, wariness of young, in 

 hunting districts, 77; black, 635. 



Fraser, C., on the different colors 

 of the sexes in a species of 

 Squilla, 267. 



, G., colors of Thecla, 309. 



Frere, Hookham, quoting Theog- 

 nis on selection in mankind, 28. 



Fringilla cannabina, 388. 



ciris, age of mature plumage 



in, 478. 



cyanea, age of mature plu- 



mage in, 478. 



leucophrys, young of, 481. 



spinus, 410. 



tristis, change of color in. 



in spring, 388; young of, 480. 



Fringillidffi, resemblance of the 

 females of distinct species of, 

 464. 



Frogs, 345; male, temporary re- 

 ceptacles for ova possessed by, 

 204; ready to breed before the fe- 

 males, 208; fighting' of, 346; vocal 

 organs of, 346. 



Frontal bone, persistence of the 

 suture in, 38. 



Fruits, poisonous, avoided by ani- 

 mals, 65. 



Fuegians, 130, 140; difference of 

 stature among the, 30; power of 

 sight in the, 32; skill of, in stone- 

 throwing, 48; resistance of the, 

 to their severe climate, 61, 177; 

 mental capacity of the, 63; 

 quasi-religious sentiments of 

 the, 92; resemblance of, in men- 

 tal characters, to Europeans, 

 174; mode of life of the, 192; 

 aversion of, to hair on the face. 

 575; said to admire Europear. 

 women, 576. 



Fulgoridse, songs of the, 279. 



Fur, whiteness of, in arctic ani- 

 mals, in winter, 224. 



Fur-bearing animals, acquired 

 sagacity of, 77. 



G 



Galliorex, sexual difference in the 

 color of the irides in, 419. 



cristatus, pugnacity of male, 



357; red caruncle occurring in 

 the male during the breeding- 

 season, 384. 



Gallinacese, frequency of polyg- 

 amous habits and of sexual dif- 

 ferences in the, 215; love-ges- 

 tures of, 375; decomposed feath- 

 ers in, 380; stripes of young, 

 459; comparative sexual differ- 

 ences between the species of, 

 464, 465; plumage of, 466. 



Gallinaceous birds, weapons of 

 the male, 358; racket-shaped 

 feathers on the heads of, 379. 



Gallinula chloropus, pugnacity of 

 the male, 356. 



Galloperdix, spurs of, 360; devel- 

 opment of spurs in the female, 

 444. 



Gallophasis, young of, 463. 



Gallus bankiva, 441; neck-hackles 

 of, 387. 



Stanleyi, pugnacity of the 



male, 359. 



Galls, 58. 



Galton, Mr., on hereditary gen- 

 ius, 27; gregariousness and in- 

 dependence in animals, 101; on 

 the struggle between the social 

 and personal impulses, 121; on 

 the effects of natural selection 

 on civilized nations, 130; on the 

 sterility of sole daughters, 132; 

 on the degree of fertility of peo- 

 ple of genius, 133 j on the early 

 marriages of the poor, 134; on 

 the ancient Greeks, 137; on thfe 

 Middle Ages, 137; on the prog- 

 ress of the United States, 138: 

 on South African notions of 

 bpauty, Sli. 



