[36] On the various activities of boys see W. A. McKeever, Training the Boy.
[37] See the notable report by Breckinridge and Abbott, The Delinquent Child and the Home.
[38] On the gregarious instincts see J. A. Puffer, The Boy and His Gang.
[39] See the books on manual work given in chap. vii, "Directed Activity."
[40] On the religious life of the boy in relation to society and the church see Allan Hoben, The Minister and the Boy, and the author's treatment of boys and the Sunday school in Efficiency in the Sunday School, chap. xiv; also J. Alexander et al., Training the Boy, a symposium.
[41] On the attitude of reverence in this question read Dr. Cabot's fine essay, The Christian Approach to Social Morality.
[42] The works of Dr. W. S. Hall, From Boyhood to Manhood, for parents' guidance with boys of thirteen to eighteen; E. Lyttleton, Training of the Young in Laws of Sex, is excellent for fathers; Reproduction and Sexual Hygiene is a text for older youth to be recommended; also, for reading, N. E. Richardson, Sex Culture Talks, D. S. Jordan, The Strength of Being Clean.
[43] For further studies of the problem of the boy parents would do well to read: Building Boyhood, a symposium; W. A. McKeever, Training the Boy; W. B. Forbush, The Coming Generation; W. D. Hyde, The Quest of the Best.
[44] On activities see W. A. McKeever, Training the Girl.
[45] On the problem with young children see M. Morley, The Renewal of Life; in connection with older girls see K. H. Wayne, Building Your Girl.