eriments that the cause of the hypnotic
sleep was subjective. With the experiments in 1841 of Dr. James Braid,
the originator of the term "hypnotism," the scientific phase of the
development of hypnotism began. The acceptance of the facts of hypnotism
by the scientific world was the result of the work of Charcot and his
students of the so-called Nancy School of Psychology.

From the study of hypnotism to observation upon the role of suggestion
in social life was a short step. Binet, Sidis, Muensterberg have
formulated psychological definitions of suggestion and indicated its
significance for an understanding of so-called crowd phenomena in human
behavior. Bechterew in his monograph _Die Bedeutung der Suggestion im
Sozialen Leben_ has presented an interpretation of distinct value for
sociological research. At the present time there are many promising
developments in the study of suggestion in special fields, such as
advertising, leadership, politics, religion.

SELECTED BIBLIOGRAPHY

I. INTERACTION AND SOCIAL INTERACTION

(1) Lotze, Hermann. _Metaphysic._ Vol. I, chap, vi, "The Unity of
Things." Oxford, 1887.

(2) Ormond, Alexander T. _Foundations of Knowledge._ Chap, vii,
"Community or Interaction." London and New York, 1900.

(3) Gumplowicz, L. _Der Rassenkampf._ Sociologische Untersuchungen. Pp.
158-75. Innsbruck, 1883.

(4) Simmel, Georg. "Ueber sociale Differenzierung, sociologische und
psychologische Untersuchungen." _Staats- und Socialwissenschaftliche
Forschungen_, edited by G. Schmoller. Vol. X. Leipzig, 1891.

(5) Royce, J. _The World and the Individual._ 2d ser. "Nature, Man, and
the Moral Order," Lecture IV. "Physical and Social Reality." London and
New York, 1901.

(6) Boodin, J. E. "Social Systems," _American Journal of Sociology_,
XXIII (May, 1918), 705-34.

(7) Tosti, Gustavo. "Social Psychology and Sociology," _The
Psychological Review_, V (July, 1898), 348-61.

(8) Small, Albion W. _General Sociology._ Chicago, 1905.

(9) Cooley, Charles H. _The Social Process._ New York, 1918.

II. SOCIAL INTERACTION AND SOCIAL CONSCIOUSNESS

(1) Marshall, Henry R. _Consciousness._ Chap, vii, "Of Consciousnesses
More Complex than Human Consciousnesses." New York and London, 1909.

(2) Baldwin, James Mark. _Social and Ethical Interpretations in Mental
Development._ A study in social psychology. New York and London, 1906.

(3) Royce, Josiah. "Self-Consciousness, Social Consciousness and
Nature,"