Rana esculenta, vocal sacs of.
Rat, common, general dispersion of, a consequence of superior cunning;
supplantation of the native in New Zealand, by the European rat;
common, said to be polygamous; numerical proportion of the sexes in.
Rats, enticed by essential oils.
Rationality of birds.
Rattlesnakes, difference of the sexes in the; rattles as a call.
Raven, vocal organs of the; stealing bright objects; pied, of the Feroe
Islands.
Rays, prehensile organs of male.
Razor-bill, young of the.
Reade, Winwood, suicide among savages in Africa; mulattoes not
prolific; effect of castration of horned sheep; on the Guinea sheep; on
the occurrence of a mane in an African ram; on singing of negroes; on
the negroes appreciation of the beauty of their women; on the
admiration of negroes for a black skin; on the idea of beauty among
negroes; on the Jollofs; on the marriage-customs of the negroes.
Reason in animals.
Redstart, American, breeding in immature plumage.
Redstarts, new mates found by.
Reduvidae, stridulation of.
Reed-bunting, head-feathers of the male; attacked by a bullfinch.
Reefs, fishes frequenting.
Reeks, H., retention of horns by breeding deer; cow rejected by a bull;
destruction of piebald rabbits by cats.
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