Contributions to Knowledge made by Instruc- tors and Advanced Students of
the University
VOLUME VI
Nos. 40-43. January, 1919, to December, 1919
BLOOMINGTON, INDIANA
Published by the University
The UNIVERSITY STUDIES constitute a series of University publications, in which are published some of the contributions to knowledge made by instructors and advanced students of the University. At present four numbers are issued a year.
For sale by the University Bookstore, Bloomington, Ind.