Notes
1 An abstract of a dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in the Graduate Faculty of the School of Education of New York University, 1940. The writer is indebted to the members of her advisory committee: Paul R. Radosavljevich, Chairman; Francis J. Brown; and Ernest R. Wood for their guidance during the progress of this study. Thanks are also due to Lloyd N. Yepsen for his helpful advice.