[24] Ascent of Man.
[25] Human and Animal Psychology, pp. 5-7 and 440-445.
[26] For a complete statement of methods and results, see Hodge, American Journal of Psychology, vol. ii, pp. 3 et seq.; and vol. iii, pp. 530 et seq.
[27] See Pedagogical Seminary, vol. ii, pp. 12 et seq.
[28] Ibid., op. cit.
[29] Cowles, Neurasthenia and its Mental Symptoms, pp. 17 et seq.
[30] Educational Review, op. cit.
[31] Addresses and Proceedings of the National Educational Association, 1897, p. 279.
[32] Cf. Warner, The Study of Children, chapters viii and ix.
[33] Educational Review, op. cit.