BULLETIN 
OF THE 
ILLINOIS STATE LABORATORY 
OF 
NATURAL HISTORY 
Ursana, Iturois, U. S. A. 
VOLUME VI. 
1901-1903 
CONTRIBUTIONS TO THE NaTuRAL History SuRVEY OF ILLINOIs, 
MADE UNDER THE DIRECTION OF 
S. A. ForsBes 
GAZETTE PRESS 
CHAMPAIGN, ILLINOIS 
1903 
