Notes
The writer wishes to express his appreciation here to the many persons who have cooperated in supplying data for this study. Some of the computations for Group 1 were done by Donald Hargis, now of the Department of Speech of the University of Oregon, and for Group 4 by Esther Hoyer of Red Wing High School of Red Wing, Minnesota, and are reported here with the computations on these groups in combination with other groups and with the major work on the project with their permission. Some of the early work on this project was made possible by a grant of funds from the Committee on General Research of the Graduate School of the University of Minnesota. The project has been brought to completion by the assistance of workers supplied by the Works Progress Administration, University Research Project WP5209, Subproject 96