D44 



INDEX. 



Frogs, 349 ; male, temporary recep- 

 tacles for ova possessed by, 208 ; 

 ready to breed bp^ore the females, 

 212; fighting of, o-i9; vocal organs 

 of, 350. 



Frontal boue, persistence of the snture 

 in, 39. 



Fruits, poisonous, avoided by animals, 



Fuegians, 133, 143; difference of sta- 

 ture among the, 31 ; power of sight 

 in the, 33 ; skill of, in stone-throw- 

 ing, 49 ; resistance of the, to their 

 severe climate, 63, 1 82 ; mental 

 capacity of the, 65 ; quasi-religious 

 sentiments of the, 95 ; resemblance 

 of, in mental characters, to Euro- 

 peans, 178 ; mode of life of the, 

 197; aversion of, to hair on the 

 face, 580 ; said to admire European 

 women, 582. 



Fulgoridse, songs of the, 281. 



Fur, whiteness of, in arctic animals, 

 in winter, 229. 



Fui'-bearing animals, acquired saga- 

 city of, 80. 



GallicreXf sexual difference in the 

 colour of the irides in, 425. 



■ cristatuSj pugnacity of male, 



360 ; red caruncle occurring in 

 the male during the breeding- 

 season, 389. 



Sallinaceae, frequency of polygamous 

 habits and of sexual differences in 

 the, 219; love-gestures of, 380; 

 decomposed feathers in, 385 ; stripes 

 of young, 464 ; comparative sexual 

 difterences between the species of, 

 470, 471 ; plumage of, 472. 



Gallinaceous birds, weapons of the 

 male, 362 ; racket-shaped feathers 

 on the heads of, 384. 



GalUnula chloropuSf pugnacity of the 

 male, 360. 



cristataj pugnacity of the male, 



360. 



Galloperdix, spurs of, 364 ; develop- 

 ment of spurs in the female, 450. 



GallophasiSj young of, 468. 



Gallus bankivay 447 ; neck-hackles of, 

 392. 



S^anleyi, pugnacity of the male, 



363. 



Galls, 60. 



Galton, Mr., on hereditary genius, 28 ; 

 gregariousness and independence 

 in animals, 104 ; on the struggle 

 between the social and personal 

 impulses, 125 ; on the effects oi 

 natural selection on civilised na- 

 tions, 133; on the sterility of sole 

 daughters, 135 ; on the degree of 

 fertility of people of genius, 136 ; 

 on the early marriages of the poor, 

 138; on the ancient Greeks, 140; 

 on the Middle Ages, 141 ; on the 

 progress of the LInited States, 142; 

 on South African notions of beauty, 

 579. 



Gammarus, use of the chelae of, 268. 



marinuSf 270. 



Gannels, white only when mature, 

 492. 



Ganoid fishes, 159, 165. 



Gaour, horns of the, 505. 



Gap between man and the apes, 156. 



Gaper, sexes and young of, 486. 



Gardner, on an example of rationality 

 in a Gc'lasimus, 270. 



Garrulus glandarius, 407. 



Gartner, on sterility of hybrid plants, 

 172. 



Gasteropoda, 272; pulnioniferous, 

 court&hip of, 262. 



GasterosteuSj 220 ; nidifieation of, 

 345. 



leiw^s, 331, 340, 345. 



trac/iurus, 382. 



Gastrophora, wings of, brightly co- 

 loured beneath, 3 J 5. 



Gauchos, want of humanity among 

 the, 123. 



Gaudry, M., on a fossil monkey. 154. 



Gaviuj seasonal change of plumage in, 

 493. 



Geese, clanging noise made by, 368 

 pairing of different species of, 415 ; 

 Canada, selection of mates by, 416. 



Gegenbaur, C, on the number of 

 digits in the Ichthyopterygia, 37 ; 

 on the hermaphroditism of the 

 remote progenitors of the verte- 

 brata, 161 ; two types of nipple in 

 mammals, 162. 



GelasimuSj proportions of the sexes 

 in a species of, 2")4 ; use of th« 

 enlarged chelae of the male, 268 ; 

 pugnacity of males of, 269; ratioBa! 



