Ctenomys, blind, [137].

Cuckoo, instinct of, [216].

Currants, grafts of, [262].

Currents of sea, rate of, [360].

Cuvier on conditions of existence, [206].

—— on fossil monkeys, [304].

——, Fred., on instinct, [208].

D.

Dana, Prof., on blind cave-animals, [139].

——, on relations of crustaceans of Japan, [372].