[Footnote 20: Children's Attitude toward Punishment for Weak Time Sense. By D.S. Snedden. Barnes's Studies in Education, vol. 1, pp. 344-351]
[Footnote 21: Ueber Einzel- und Gesamtleistung des Schulkindes. Archiv für die gesamte Psychologie, 1 Band, 2 and 3 Heft, 1903, pp. 276-416]
[Footnote 22: Development of the Social Consciousness of Children. By Will S. Monroe. North-Western Monthly, September, 1898, vol. 9, pp. 31-36.]
[Footnote 23: Bohannon: The Only Child in a Family. Pedagogical
Seminary, April, 1898, vol. 5, pp. 475-496.]
[Footnote 24: J. Delitsch: Über Schülerfreundschaften in einer Volksschulklasse, Die Kinderfehler. Fünfter Jahrgang, Mai, 1900, pp. 150-163.]
[Footnote 25: On Some Psychical Relations of Society and Solitude.
Pedagogical Seminary, April 1900, vol. 7, pp. 13-69]
[Footnote 26: A. Rauber: Homo Sapiens Ferus. J. Brehse, Leipzig,
1888. See also my Social Aspects of Education; Pedagogical Seminary,
March, 1902, vol. 9, pp. 81-91. Also Kropotkin: Mutual Aid a Factor of
Evolution. W. Heinemann, London, 1902.]
[Footnote 27: Rudimentary Society among Boys, by John H. Johnson,
McDonogh, Md. McDonogh School, 1983, reprinted from Johns Hopkins
University Studies Series 2 (Historical and Political Studies, vol. 2,
No. 11).]
[Footnote 28: The Institutional Activities of American Children.
American Journal of Psychology, July, 1898, vol. 9, pp. 425-448.]
[Footnote 29: Der deutsche Student am Ende des 19. Jahrhunderts. 6th
Ed. Göschen, Leipzig, 1896.]