; 
_ NEW SERIES NO. 67 MAY 1, 1923 
: =—————————_——__————@Dm@R@ll@L—yaSS==_=nESESsSpaua=aanB>~>~ooooaooaaoaaaDa=E=S"=S=a=IS=anGa=n»S>=ISClIE=EeTqywrmnanaE=|=EEEE_———| 
UNIVERSITY OF IOWA 
STUDIES 
STUDIES IN NATURAL 
HISTORY 
VOLUME X NUMBER 2 
LAKESIDE LABORATORY 
STUDIES 
PUBLISHED BY THE UNIVERSITY, IOWA CITY 
Issue ay — —_ aay ee eearet the year. Enter ar as Page Fan yee at Io uke City, 
low: con Acceptance for age pro 
‘tor in foc ctio = 108, ey: a of October 3, 1917, sithor an a os iy 3, 1918. 
