VOLUME XIII. 
MAY, 
1913. 
NUMBER 7 
THE 
OHIO NATURALIST 
A Journal Devoted more 
Especially to the Natural 
History Ohio. 
OFncIAL ORGAN of THE BIOLOGICAL CLUB 
qf the OHIO STATE UNIVERSITY, and qf THE 
OHIO ACADEMY qf SCIENCE. 
Ohio State University, Columbus. 
Annual Subscription Price, $1.00 
Single Number 15 cents. 
Entered at the Post-Offiice at Columbs, Ohio, as Second-Class Matter. 
