[44] Breckinridge and Abbott, _The Delinquent Child and the Home_, p.
66.
[45] See Thomas and Znaniecki, _The Polish Peasant_, vol. i.
[46] Abbott and Breckinridge, _Truancy and Nonattendance in the
Chicago Schools_, chap. viii, p. 129.
[47] See Jane Addams, _Twenty Years at Hull House_, chap. xi.
[48] Breckinridge and Abbott, _The Delinquent Child and the Home_, p.
57.
[49] _Ibid._, p. 61.
[50] Breckinridge and Abbott, _The Delinquent Child and the Home_, p.
62. See _U. S. Twelfth Census Population_, vol. ii, p. 314, Table
XXXII.