es 
STATE OF ILLINOIS 
DEPARTMENT OF REGISTRATION AND EDUCATION 
A. M. Suerton, Director 
BOARD OF 
NATURAL RESOURCES AND CONSERVATION 
A. M. SHELTON, Chairman 
WiiiiaAM TRELEASE, Biology Joun W. Atvorp, Engineering 
Joun M. Coutter, Forestry Kenpric C. Bascock, Representing the 
Epson S. Bastin, Geology President of the University of Ilinots 
Wuu1am A. Noyes, Chemistry 
THE NATURAL HISTORY SURVEY DIVISION 
STEPHEN A. Forses, Chief 
