Publications of the University of Texas 
Publications Committee: 
W. J. BATTLE E. C. BARKER 
J. C. TOWNES A. CASWELL ELLIS 
W.S. CARTER R. A. Law 
Kimuis CAMPBELL J. A. Lomax 
F. W. Simonps A. C. Jupson 
The University publishes bulletins six times a month. These 
comprise the official publications of the University publica- 
tions on humanistic and scientific subjects, bulletins prepared 
by the Department of Extension and by the Bureau of Munci- 
pal Research, and other bulletins of general educational in- 
terest. With the exception of special numbers, any bulletin will 
be sent to a citizen of Texas free on request. All communica- 
tions about University publications should be addressed to the 
Editor of University Publications, University of Texas, Austin. 
+ 
A. C. Baldwin & Sons, Austin, Texas 

