MAY, 



Volume XV. 1915 Number 7. 



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 Post-Offiioe at Columi)Us, Ohio, as Second-Class Matter. 



