REFERENCES:
[47.] Maxwell, W.H. A Quarter Century of Public School Development, p. 88.
[48.] Van Denburg, J.K. The Elimination of Pupils from Public Secondary Schools, p. 183.
[49.] Annual Report of the U.S. Commissioner of Education, 1917.
[50.] Thorndike, E.L. Educational Psychology, Vol. II, Chap. I.
[51.] Swift, E.J. Mind in the Making, Chap. I.
[52.] Thorndike, E.L. Elimination of Pupils from School, U.S. Bull. 4, 1907.
[53.] Meredith, A.B. Survey of the St. Louis Public Schools, 1917, Vol. III, pp. 51, 40.