Guide to the study of animal ecology

by Charles C. Adams

1911. Light and the Behavior of Organisms. pp. 410. New York.

An elaborate treatise on reactions to light.

Mead, A. D.

1900. The Natural History of the Star-fish. U. S. Fish Comm. Bull. for 1899, Vol. XIX, pp. 203-224.

Michael, E.

1911. Classification and Vertical Distribution of the Chætognatha of the San Diego Region. Univ. of Calif. Pub. Zoöl., Vol. VIII, pp. 21-186.

The distribution is studied as a response to the conditions of life, and the optima are determined.

Mills, W.

1898. The Nature and Development of Animal Intelligence. pp. 307. New York.

Valuable account of the habits of squirrels. Observations on hibernation, and on the psychic development of the young of some of the domestic animals.