ae Cn 
STATE OF ILLINOIS 
DEPARTMENT OF REGISTRATION AND EDUCATION 
A. M. SHELTON, Director 
BOARD OF 
NATURAL RESOURCES AND CONSERVATION 
A. M. SHELTON, Chairman 
Wiii1AmM Treveast, Biology Joun W. ALyorp, Engineering ‘ : 
Joun M. Courter, Forestry Kenpric C. Bascock, Representing the 3% 
Epson S. Bastin, Geology President of the University of IWi- 
Wirrtam A. Noyes, Chemistry nois - oa 
THE NATURAL HISTORY SURVEY DIVISION 
SrepHEN A. Forbes, Chief 
ee 
Scunepep & BARNES, PRINTERS 
SPRINGFIELD, ILL. 
1922 
876—1200 
