This book is Government property. The finder 
ia requested to mail it to tho Bureau op Bio¬ 
logical Survey, Department of Agriculture, 
Washington, D. C., or deliver it to the official 
whose name appears above. A detachable addressed 
frank will bo found on the last page; by tying this 
on the cover the book may be mailed without post¬ 
age or wrapping if fastened shut. 
EffT OF AGRICULTURE 
FIELD DIA 
J. LI LUU. - 
NOTICE 
VKRNMKNT PRtNTIT'Q OFFICE 
8—4925 
