Part 40

VOIGT, W.

1904. Über die Wanderungen der Strudelwürmer in unseren Gebirgsbächen. Verhand. naturhis. Ver. der preuss. Rheinlande, Westfalens und des Regiersungsbezirks Osnabrück, Jahrg. 61, pp. 103-178.

Shows the relation of behavior to the local distributions of Planarians.

WAGNER, W.

1907. Psycho-biologische Untersuchungen an Hummeln mit Bezugnahme auf die Frage der Geselligkeit im Tierreich. Zoologica (Chun), Bd. XIX, Heft 46, pp. 1-239.

An important study of the behavior of Bombus.

WALTER, H. E.

1906. The Behavior of the Pond Snail, Lymnæus Eleodes Say. Cold Spring Harbor Monogr. VI. pp. 35.

WASMANN, E. (Trans.)

1903. Instinct and Intelligence in the Animal Kingdom. A Critical Contribution to Modern Animal Psychology. pp. 171. St. Louis, Mo. From the second and enlarged German edition.

1905. Comparative Studies in the Psychology of Ants and of Higher Animals. pp. 200. St. Louis, Mo. Translated from the revised and enlarged second German edition.

WATSON, J. B.

1908. The Behavior of Noddy and Sooty Terns. Pub. 103, Carnegie Inst. pp. 187-255.

An excellent account of bird behavior in colonial species.

WHEELER, W. M.

1903. Ethological Observations on an American Ant (Leptothorax Emersoni Wheeler). Jour. für Psychol. und Neurol., Bd. II, pp. (1-31).

1910. Ants, their Structure, Development and Behavior. pp. 663. New York.

The most useful single work on ants, ant behavior, slaves, commensals, etc.; a very important work. Extensive references.

WHITMAN, C. O.

1899. Animal Behavior. Biol. Lectures, Marine Biol. Lab., Wood’s Holl, 1898, pp. 285-338.

Behavior of leech, Necturus, birds, etc.

WICKHAM, H. F.

1899. The Habits of American Cicindelidæ. Proc. Davenport Acad. Sci., Vol. VII, pp. 206-228.

YERKES, R. M.

1904. Space Perception of Tortoises. Jour. Comp. Neurol. and Psychol., Vol. XIV, pp. 17-26.

YOAKUM, C. S.

1909. Some Experiments upon the Behavior of Squirrels. Jour. Comp. Neurol. and Psychol., Vol. XIX, pp. 541-568.

IX. THE CONTINUOUS PROCESS OF ADJUSTMENT BETWEEN THE ENVIRONMENT AND THE ANIMAL, WITH SPECIAL REFERENCE TO OTHER ORGANISMS