ii. 114;

on hares fighting, ii. 239; on the Bell-bird, ii. 79.

WATTLES, disadvantageous to male birds in fighting, ii. 98.

WEALTH, influence of, i. 169.

WEALE, J. Mansel, on a South African caterpillar, i. 416.

WEAPONS, employed by monkeys, i. 51; use of, i. 137; offensive, of males, i. 257; of mammals, ii. 241 _et seq._

WEAVER-BIRD, ii. 54.

WEAVER-BIRDS, rattling of the wings of, ii. 62; assemblies of, ii. 101.

WEBB, Dr., on the wisdom teeth, i. 25.

WEDGWOOD, Hensleigh, on the origin of language, i. 56.

WEEVILS, sexual difference in length of snout in some, i. 255.

WEIR, Harrison, on the numerical proportion of the sexes in pigs and rabbits, i. 305; on the sexes of young pigeons, i. 306; on the songs of birds, ii. 52; on pigeons, ii. 109; on the dislike of blue pigeons to other coloured varieties, ii. 118; on the desertion of their mates by female pigeons, ii. 119.

WEIR, J. Jenner, on the nightingale and blackcap, i. 259; on the relative sexual maturity of male birds, i. 261; on female pigeons deserting a feeble mate, i. 262; on three starlings frequenting the same nest, i. 269; on the proportion of the sexes in _Machetes pugnax_ and other birds,