STATE OF ILLINOIS 

 DEPARTMENT OF REGISTRATION AND EDUCATION 



A. M. Shelton, Director 



BOARD OF 



NATURAL RESOURCES AND CONSERVATION 

 A. M. Shelton, Chairman 



William Tbelease, Biology 

 John M. Coulter, Forestry 

 Edson S. Bastin, Geology 

 William A. Noyes, Chemistry 



John W. Alvord, Engineering 

 Kendric C. Babcock. Representing the 

 President of the University of Illi- 

 nois 



NATURAL HISTORY SURVEY DIVISION 

 Stephen A. Forbes, Chief 



SCHNEpp & Barnes, Printers 



Sprinqpieu), III. 



1924 



17319—2500 



