The Indiana University Studies are intended to furnish a 

 means for publishing some of the contributions to knowledge made 

 by instructors and advanced stud'ents of the University. The 

 Studies are continuovMy numbered; each number is paged inde- 

 pendently. 



Entered as second-class matter, June 14, 1918, at the post-office at Bloomington, 

 Ind., under the act of August 24, 1912. The Indiana University Studies are published 

 four times a year, in March, June, September, and December, by Indiana University, 

 from the University Office, Bloomington, Ind. 



