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 num- 

 bered ; each number is paged independently. 



Entered as second-class matter, June 14, 1918, at the postofEce at Bloomington, Ind., 

 -under the act of Augrust 24, 1912. The Indiana University Studies are published four 

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

 Tihe University office, Bloomington, Ind. 



