INDEX. 777 



Races, distinctive characters of, 190, 191; or species of man, 191; 

 crossed, fertility or sterility of, 194; of man, variability of the, 198; 

 of man, resemblance of, iii mental characters, 203; formation of, 206; 

 of man, extinction of, 206; effects of the crossing of, 218; of man, 

 formation of the, 218; of man, children of the, 635; beardless, aver- 

 sion of, to hairs on the face, 662. 



Raffles, Sir S., on the banteng, 613. 



Rafts, use of, 54, 205. 



Rage, manifested by animals, 77. 



Raia Ji/xtis, teeth of, 379; raia clavata, female spined on the back, 

 375; sexual difference in the teeth of, 379; raia maculata, teeth of, 

 379. 



Rails, spur- winged, 414. 



Ram, mode of fighting of the, 579; African, mane of an, 608; fat- 

 tailed, 608. 



Rameses II, features of, 192. 



Ramsay, Mr., on the Australian muck-duck, 407; on the regent- 

 bird, 470; on the incubation of Menura superba, 513. 



Rana esculenta, vocal sacs of, 397. 



Rat, common, general dispersion of, a consequence of superior 

 cunning, 91; supplantation of the native, in New Zealand, by the 

 European rat, 218; common, said to be polygamous, 247; numerical 

 proportion of the sexes in, 279. 



Rats, enticed by essential oils, 603. 



Rationality of birds, 466. 



Rattlesnakes, difference of the sexes in the, 398; rattles as a 

 call, 401. 



Raven, vocal organs of the, 421; stealing bright objects, 469; pied, 

 of the Feroe Islands, 482. 



Rays, prehensile organs of male, 375. 



Razor-bill, young of the, 553. 



Reade, Winwood, suicide among savages in Africa, 133; mulattoes 

 not prolific, 195; effect of castration of horned sheep, 577; on the 

 Guinea sheep, 266; on the occurrence of a mane in an African ram, 

 608; on singing of negroes, 652; on the negroes appreciation of the 

 beauty of their women, 658; on the admiration of negroes for a 

 black skin, 660; on the idea of beauty among negroes, 663; on the 

 Jollofs, 670; on the marriage-customs of the negroes, 684. 



Rea.son in animals, 84. 



Redstart, American, breeding in immature plumage, 552. 



Redstarts, new mates found by, 464. 



Reduvidae, stridulation of, 319. 



Reed-bunting, head-feathers of the male, 455; attacked by a bull- 

 finch, 468. 



Reefs, fishes frequenting, 389. 



Reeks, H., retention of horns by breeding deer, 574; cow rejected 

 by a bull, 598; destruction of piebald rabbits by cats, 619. 



Regeneration, partial, of lost parts in man, 8. 



Regentrbirds, 470. 



Reindeer, horns of the. 264; battles of, 571; horns of the female, 

 574; antlers of, with numerous points, 582; winter change of the, 

 619; sexual preferences shown by, 598. 



Relationship, terms of, 675. 



