all-exclusive system. I am not aware that even the
"doctors" have yet fully settled this question. The psychological
order is the one sought. What is intelligible, full of living
interest, and of largest probable importance in the life and work of
the student teacher are the criteria applied in the selection of
materials. The student verdict is given much weight in deciding.

A rather successful plan of providing an adequate number of duplicates
of books much used has been developed by the writer at the State
University of Iowa and at the University of Washington. In all courses
in which no single suitable text is found the students are asked to
contribute a small sum, from twenty-five to fifty cents, for the
purpose of purchasing duplicates. These books are placed on the
reserve shelf, and this makes it possible for large classes to be
accommodated with a relatively small number of books. Ordinarily there
should be one book for every four or five students, if all are
expected to read the same assignment. If options are allowed, the
proportion of books may be reduced. The books become the property of
the institution, and a fine library of duplicate sets rapidly
accumulates. In about five years about fifteen hundred volumes have
been secured in this way at the University of Washington. Valuable
pamphlet material and reprints of important articles also are
collected and kept in filing boxes.

FREDERICK E. BOLTON
_University of Washington_

BIBLIOGRAPHY

1. ARTICLES ON TEACHING OF EDUCATIONAL THEORY

BOLTON, FREDERICK E. The Relation of the Department of Education to
Other Departments in Colleges and Universities. _Journal of Pedagogy_,
Vol. XIX, Nos. 2, 3, December, 1906, March, 1907.

---- Curricula in University Departments of Education. _School and
Society_, December 11, 1915, pages 829-841.

JUDD, CHARLES H. The Department of Education in American Universities.
_School Review_, Vol. 17, November, 1909.

HOLLISTER, HORACE A. Courses in Education Best Adapted to the Needs of
High School Teachers and High School Principals. _School and Home
Education_, April, 1917.

2. BOOKS ON THE GENERAL, BIOLOGICAL, AND PSYCHOLOGICAL PHASES OF
EDUCATION

BAGLEY, WILLIAM C. _The Educative Process._ The Macmillan Company,
1907. 358 pages.

---- _Educational Values._ The Macmillan Company, 1911. 267 pages.

BOLTON, FREDERICK E. _Principles of Education._ Charles Scribner's