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Herrick, F. H.

1910. Instinct and Intelligence in Birds. Pop. Sci. Mo., Vol. LXXVI, pp. 532-556; Vol. LXXVII, pp. 82-97, 122-141.

1910. Life and Behavior of the Cuckoo. Jour. Exp. Zoöl., Vol. IX, pp. 169-233.

Illustrates the orderly sequence of forms of behavior.

1911. Natural History of the American Lobster. Bull. U. S. Bur. Fisheries, Vol. XXIX, pp. 149-408. Doc. No. 747.

Hodge, C. F.

1894. The Methods of Homing Pigeons. Pop. Sci. Mo., Vol. XIV, pp. 758-775.

Holmes, S. J.

1901. Observations on the Habits and Natural History of Amphithoe longimana Smith. Biol. Bull., Vol. II, pp. 165-193.