Whewell, Prof., on maternal affection.

Whiskers, in monkeys.

White, F.B., noise produced by Hylophila.

White, Gilbert, on the proportion of the sexes in the partridge; on the house-cricket; on the object of the song of birds; on the finding of new mates by white owls; on spring coveys of male partridges.

Whiteness, a sexual ornament in some birds; of mammals inhabiting snowy countries.

White-throat, aerial love-dance of the male.

Whitney, Prof., on the development of language; language not indispensable for thought.

Widgeon, pairing with a pintail duck.

Widow-bird, polygamous; breeding plumage of the male; female, rejecting the unadorned male.

Widows and widowers, mortality of.