the State of Massachusetts offered valuable suggestions in connection
with certain parts of the manuscript. The thanks of the author are
also due to L. L. Jackson Assistant Commissioner of Education for the
State of New Jersey.

Invaluable aid has been received from numerous members of the faculty
of Harvard University. Parts of the text were read and criticized by
A. Lawrence Lowell, President; Roscoe Pound, Dean of the Law School;
and Paul H. Hanus, Dean of the Graduate School of Education.
Professors Edward Channing and F. J. Turner, and Dr. Marcus L. Hanson
offered valuable suggestions in connection with the historical
chapters.

In the Department of Economics, helpful criticisms were contributed by
Professors F. W. Taussig, T. N. Carver, O. M. W. Sprague, C. J.
Bullock, W. Z. Ripley, and E. E. Lincoln; and by Dr. E. A. Monroe and
Dr. Mixter.

Various chapters dealing with social problems were read and criticized
by Professors Richard Cabot, James Ford, R. F. Foerster, and Dr. Niles
Carpenter of the Department of Socials Ethics, as well as by Dr. John
M. Brewer of the Department of Education. Substantial aid was received
from Professors W. B. Munro, A. B. Hart, and A. N. Holcombe; and from
Dr. A. C. Hanford, in the preparation of the chapters on political
problems.

Professor Edwin R. A. Seligman of the Department of Economics, and
Professor Lindsay Rogers of the Department of Government, in Columbia
University, contributed helpful suggestions.