APRIL, 
Volume XV. 1915 Number 6. 
THE 
OHIO NATURALIST 
AND 
JOURNAL OF SCIENCE 
Official Organ of the OHIO ACADEMY OF SCIENCE and 
BIOLOGICAL CLUB of the OHIO STATE UNIVERSITY 
COLUMBUS, OHIO 
Annual Subscription Price, $1.00 Single Number, 15 Cents 
Entered at the I'oat-Ofiiire at Columbus, Ohio, as Second-Class Matter. 
