824 



INDEX 



Praser, C, on the different colors of 

 the sexes in a species of Sqnilla, 367. 



. , G., colors of Thecla, 407. 



frere, Hookham, quoting Theognis on 

 selection in mankind, SO. 



Fringilla cannabina, 609. 



• ciris, age of mature plumage in, 



624. 



cyanea, age of mature plumage in, 



624. 



— — leuoophrys, young of, 627. 



spinus, 536. 



tristis, change of color in, in 



spring, 608; young of, 626. 



f ringilUdea, resemblance of the females 

 of distinct species of, 606. 



Frogs, 463; male, temporary recepta- 

 cles for ova possessed by, 276; 

 ready to breed before the females, 

 281; fighting of, 456; vocal organs 

 of, 456. 



Frontal bone, persistence of the suture 

 in, 62. 



Fruits, poisonous, avoided by animals, 

 96. 



Fuegians, 179-180, 193; difference of 

 stature among the, 52; power of 

 sight in the, 66; skill of, in stone- 

 throwing, 74; resistance of the, to 

 their severe climate, 92, 242 ; menial 

 capacity of the, 94; quasi-religious 

 sentiments of the, 132 ; resemblance 

 of, in mental characters, to Euro- 

 peans, 237 ; mode of life of the, 261 ; 

 aversion of, to hair on the face, 747 ; 

 said to admire European women, 

 749. 



Fulgoridee, songs of the, 371. 



Fur, whiteness of, in arctic animals, in 

 winter, 302. 



Fur-bearing animals, acquired sagacity 

 of, 113. 



O 



G«l]icrez, eexud difference in the color 

 of the irides in, 649. 



cristatuB, pugnacity of male, 468 ; 



red caruncle occurring in the male 

 during the breeding season, 503. 



Oallinaceee, frequency cA polygamous 

 habits and of sexual differences in 

 the, 289-290 ; love gestures of, 492 ; 

 decomposed feathers in, 498 ; stripes 

 of yonng, 699; comparative sexual 



differences between the species of, 

 606-607; plumage of, 609. 



Graliinaceous birds, weapons of the 

 male, 471; racket-shaped feathers 

 on the heads of, 498. 



Gallinula chloropus, pugnacity of the 

 male, 468. 



cristata, pugnacity of the male, 



468. 



Galloperdix, spurs of, 473 ; development 

 of spurs in the female, 580. 



Gallophasis, young of, 604. 



Gallus bankiva, 676 ; neck hackles of, 

 607. 



Stanleyi, pugnacity of the male, 



471. 



Galls, 88. 



Galton, Mr., on hereditary genius, 48; 

 gregariousness and independence in 

 animals, 143; on the struggle be- 

 tween the social and personal im- 

 pulses, 169 ; on the effects of nat- 

 ural selection on civilized nations, 

 180 ; on the sterility of sole daugh- 

 ters, 183; on the degree of fertility 

 of people of genius, 184; on the 

 early marriages of the poor, 186; 

 on the ancient Greeks, 189; on the 

 Middle Ages, 190; on the progress 

 of the United Stales, 191 ; on Soutb 

 African notions of beauty, 746. 



Gammarus, use of the chelae of, 354. 



marinns, 356. 



Gannels, white only when mature, 636. 



Ganoid fishes, 213, 220. 



Gaour, horns of the, 653. 



Gap between man and the apes, 209. 



Gaper, sexes and young of, 627. 



Gardner, on an example of rationality 

 in a GelasimuR, 356-357. 



Garrulus glandarius, 526. 



Gartner, on sterility of hybrid plants, 

 229. 



Gasteropoda, 347 ; pulmoniferous, 

 courtship of, 347. 



Gasterosteus, 293 ; nidification of, 449. 



leiurus, 432, 443, 449. 



trachurus, 433. 



Gastrophbra, wings of, brightly colored 

 beneath, 411. 



Gauchos, want of humanity among 

 the, 166. 



Gaudry, M., on a fossil monkey, 206. 



Gavia, seasonal change of plumage in, 

 636. 



