Batrachians on islands, [393].
Bats, how structure acquired, [180].
——, distribution of, [394].
Bear, catching water-insects, [184].
Bee, sting of, [202].
——, queen, killing rivals, [202].
Bees fertilising flowers, [73].
——, hive, not sucking the red clover, [95].
————, cell-making instinct, [224].
——, humble, cells of, [225].