men teaching sociology in some thirteen courses.
Expansion and specialization, 1917-30. — The years 1917-30 constituted a period of rapid expansion and differentiation of the work in sociology. Especially notable was the development of courses in social problems and social work which followed the advent of Arthur Evans Wood (Harvard '06, S.T.B. ibid. '11, Ph.D. Pennsylvania '20) in 1917. It is true that Cooley had offered since 1913-14 a course entitled Seminary in the Principles of Social Case Work, but Wood, besides taking this over, added Criminology, Community Problems, and Problems of Poverty, and made arrangements for a limited number of students to receive credit for field work in social agencies. The Family was a course added by him in 1919-20. In 1921 he was made director of the curriculum for the training of social workers and thereafter arranged for the offering of courses by specialists in various fields of social work, both from other units of the University and from outside.
In 1918 Thompson gave up his teaching to do war work in Washington, and Roy Hinman Holmes (Hillsdale '11, Ph.D. Michigan '27) took over the instruction in social evolution, rural sociology, and immigration. From time to time during the next ten years other instructors were added to the staff, mainly to help with the introductory course, but occasionally giving courses of their own. Of this number, only Lowell Juilliard Carr ('20, Ph.D. '25) and Robert Cooley Angell ('21, Ph.D. '24) have remained with the department to expand its offerings, the former in the fields of social psychology, public opinion, and juvenile delinquency, the latter in the fields of general theory and social institutions.
During this third period there were in residence as graduate students and instructors men who have since made their mark either in sociology proper or in social work. In the former category are Professor Read Bain (Willamette '16, Ph.D. Michigan '26), of Miami University, and Walter Abram Terpenning (Kalamazoo '14, Ph.D. Michigan '24), of Albion College; in the latter are Harry Lawrence Lurie ('22, A.M. '23), executive director of the National Council of Jewish Federation and Welfare Funds, and Robert Tucker Lansdale (Oberlin '21, A.M. Columbia '25), of the committee on public administration, Social Science Research Council.
It may seem surprising that so flourishing a field did not come to constitute a separate department before the death of Charles Horton Cooley in 1929. The explanation lies partly in his temperament, and partly in the justice of the treatment which sociology received from the heads of the Department of Economics — Henry Carter Adams, Edmund Ezra Day, and I. Leo Sharfman. Cooley had no taste for administrative work and was only too glad to shift as much of it as possible to the shoulders of someone else. In fact, he argued that it was better to be a part of a strong department than to be an independent weak one. The equality which the staff teaching sociology enjoyed within the Department of Economics is shown by the fact that after the first year's teaching of sociology the heading of the department's offering of courses in the Calendar (1895-96) read, "Political Economy and Sociology."
The Department of Sociology, since 1930. — The last period follows upon the death of Cooley and the selection in 1930 of Roderick Duncan McKenzie ('12 Manitoba, Ph.D. Chicago '16), then of the University of Washington, to become the head of a department of sociology separate from the Department of Economics. Though the department did not become a distinct budgetary unit until 1931-32, to all intents and