The Indiana University Studies are intended to furnish a 

 means for publishing some of the contributions to knowledge 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, June 14, 1918, at the postoffice 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. 



