[6] Psych. Clinic, 1916, 10, 45-48. Anna Johnson. The Teacher in the Retarded School.
[7] Psych. Clinic, 1909, 3, 71-77. The Effect of Physical Defect on School Progress.
[8] Cornell, Psychological Clinic, 2, 1909.
[9] H. R. Burpitt. Relative Degrees of Dullness and Backwardness in School Children and their Causation. Journal of Mental Science, 1916.
[10] Transactions of the International Congress on School
[11] Ayres: "Laggards in Our Schools." 1909.
[12] Wallin: "Mental Health of the School Child." 1914.
[13] Wallin: "Mental Health of the School Child." 1914.
[14] In a few cases where the operation was postponed after just previous to the operation. Since both cases were retested, practice effect is of no great importance.
[15] A. H. MacPhail, Adenoids and Tonsils: A study showing how the Removal of Enlarged or Diseased Tonsils Affects a Child's Work in School. Ped. Sem., June, 1920, pp. 188-194.