Part 24

Ash, black, 6, 17.

Azalea, white, 6.

Balsam. See Fir.

Bass, 16.

Bear, black (Ursus americanus), 41, 58, 163, 173, 174.

Beardslee, Mrs., 109 n.

Beaver (Castor fiber), 309.

Beaverkill, the, 34.

Bee. See Bumblebee and Honey-bee.

Bee-balm. See Monarda.

Big Ingin Valley, 37.

Birch, yellow, 42.

Birds, colors of eggs, 64, 65; lining materials for nests, 70; shapes of eggs, 72; courtship, 77, 85; human traits of, 85, 86; fickle-mindedness of, 91; sense of taste, 96; their sympathy with each other, 119; gregarious and solitary, 120; local attachments of, 172, 173; sing at a distance from their nests, 188; concert of action among, 200, 201, 266; earth baths and water baths, 210; variations in songs according to localities and during a series of years, 239; their keenness of sight, 277; removal of egg-shells from the nest, 288, 289; the young leaving the nest, 292; continuation of the family life after the nest is left, 293, 294; the male feeding his mate, 298; the females more active than the male in caring for the young, 312, 313; the male broader in his sympathies and affections than the female, 313-315.

Blackbird, crow, or purple grackle, (Quiscalus quiscula), notes of, 167.

Blackbird, red-winged. See Starling, red-shouldered.

Black Pond, gathering pond-lilies in, 16-18.

Blood-root, 5, 13, 14, 168.

Bluebird (Sialia sialis), war with a wren, 66-68; courtship of, 79; jealousy and a duel, 80-82, 91; arrival of, 158, 159, 160; imaginary rivals, 189-191; and downy woodpecker, 272; war with a great crested flycatcher, 274, 275; jealousy and courage of, 275; and English sparrow, 275, 292, 293; feeding a family of vireos, 313, 314; notes of, 79-82, 158, 159, 163; nest and eggs of, 15, 64, 66, 68, 79-82, 189, 191, 275.

Blue-grass, 223, 227, 228, 234.

Blue-grass region, the, 223-234.

Bluets. See Houstonia.

Blue-weed. See Bugloss, viper's.

Bobolink (Dolichonyx oryzivorus), 188, 239; song of, 239; nest of, 188.

Bob-white. See Quail.

Boneset, climbing, 31.

Boswell, James, 251.

Botany, the study of, 27, 28; a needed aid in, 31, 32.

Bowlders, refusing to stay down, 100, 101.