044 



FROGS. 



INDEX. 



GELASIMUS. 



Frogs, 349 ; male, temporary recep- 

 tacles for ova possessed by, 208 ; 

 ready to breed b«**bre the females, 

 212; fighting of, o49 ; vocal organs 

 of, 350. 



Frontal bone, persistence of the suture 

 in, 39. 



Fruits, poisonous, avoided by animals, 

 66. 



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, 182; 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. 



Fulgoridje, songs of the, 281. 



Fur, whiteness of, in arctic animals, 

 in winter, 229. 



Fur-bearing animals, acquired saga- 

 city of, 80. 



Gallicrex, sexual difference iu the 

 colour of the irides in, 425. 



cristatus, pugnacity of male, 



360 ; red caruncle occurring in 

 the male during the breeding- 

 season, 389. 



3allinacea3, 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 

 differences between the species of, 

 470, 471 ; plumage of, 472. 



Gallinaceous birds, weapons of the 

 male, 362 ; racket-shaped feathers 

 on the heads of, 384. 



Gall inula chloropus, pugnacity of the 

 male, 360. 



cristata, pugnacity of the male, 



360. 



Galloperdix } spurs of, 364 ; develop- 

 ment of spurs in the female, 450. 



Gallophasis, young of, 468. 



Gallus bankiva, 447 ; neck-hackles of, 

 392. 



— — Sianleyi, 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 of 

 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 United States, 142 ; 

 on South African notions of beauty, 

 579. 



Gammarus, use of the chelae of, 268. 



marinus, 270. 



Gannets, 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 Gelasimus, 270. 



Garrulus glandarius, 407. 



Gartner, on sterility of hybrid plants, 

 172. 



Gasteropoda, 272; pulmoniferous, 

 courtship of, 262. 



Gasterosteus, 220 ; nidification of, 

 345. 



leiurus, 331, 340, 345. 



trachurus, 332. 



Gastrophora, wings of, brightly co- 

 loured beneath, 315. 



Gauchos, want of humanity among 

 the, 123. 



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



Gavin, 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. 



Gelasimus, proportions of the sexes 

 in a species of, 254 ; use of the 

 enlarged chela? of the male, 268 ; 

 pugnacity of males of, 269; rational 



