STATE OF ILLINOIS 
DEPARTMENT OF REGISTRATION AND EDUCATION 
A. M. SueEtton, Director 
BOARD OF 
NATURAL RESOURCES AND CONSERVATION 
A. M. SHELTON, Chairman 
WLLIAM TRELEASE, Biology JoHN W. Atvorp, Engineering 
JoHN M. Coutter, Forestry Kenpric C. Bancock, Representing the 
Epson 8. Bastin, Geology President of the University of 11li- 
WiiuiaAM A. Noyes, Chemistry nois 
THE NATURAL HISTORY SURVEY DIVISION 
SrePHEN A. Forses, Chief 
ea 
ScHNEPP & BARNES, PRINTERS 
SPRINGFIELD, ILL. 
1925 
30259—600 
