[Footnote 3: F. Burk in From Fundamental to Accessory. Pedagogical
Seminary, Oct., 1898, vol. 6, pp. 5-64.]

[Footnote 4: Creeping and Walking, by A.W. Trettien. American Journal
of Psychology, October, 1900, vol. 12, pp. 1-57.]

[Footnote 5: A Morning Observation of a Baby. Pedagogical Seminary,
December 1901, vol. 8, pp. 469-481.]

[Footnote 6: Kate Carman. Notes on School Activity. Pedagogical
Seminary, March, 1902, vol. 9, pp. 106-117.]

[Footnote 7: A Preliminary Study of Some of the Motor Phenomena of
Mental Effort. American Journal of Psychology, July, 1896, vol. 7, pp.
491-517.]

[Footnote 8: G.E. Johnson. Psychology and Pegagogy of Feeble-Minded
Children. Pedagogical Seminary, October, 1895, vol. 3, pp. 246-301.]

[Footnote 9: Dr. Hughlings Jackson, the eminent English pathologist,
was the first to make practical application of the evolutionary theory
of the nervous system to the diagnosis and treatment of epilepsies and
mental diseases. The practical success of this application was so
great that the Hughlings-Jackson "three-level theory" is now the
established basis of English diagnosis. He conceived the nervous
mechanism as composed of three systems, arranged in the form of a
hierarchy, the higher including the lower, and yet each having a
certain degree of independence. The first level represents the type of
simplest reflex and involuntary movement and is localized in the gray
matter of the spinal cord, medulla, and pons. The second, or middle