The Indiana University Studies are intended to furnish a means 

 for puUishing some of the contriJ)utions to knowledge made 'by 

 instructors and advanced students of the University. The Studies are 

 continuously numbered; each number is paged independently. 



Entered as second-class matter, June 14, 1918, at the postofflce at Bloomlngtoa, 

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

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

 University, from the University office, Bloomlngton, Ind. 



