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 post-office at Bloomington, 
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, Bloomington, Ind. 
