The Indiana University Studies are intended to fm-nish a 

 means for publishing some of the contributions to knoivledge made 

 by instructors and advanced students of the University. The 

 Studies are continuously numbered; each number is paged inde- 

 pendently. 



Entered as second-class matter March 27, 1916, at the post-office at Bloomington, 

 Ind., under the act of August 24, 1912. The Indiana UNi\-ERSiTy Studies are published 

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

 the University Office, Bloomington, Ind. 



