Buffon, [217].

Bull-dog's instinct, [260].

Burt, Prof. Wilder, [180], [184].

Butterflies, [29].

Butterflies, Amazonian, [85].

Butterflies, American, [29].

Butterflies of Indian region, [83].

Butterflies, tails of, [85].

Butterfly, Leaf, [31].

C.