STATE OP ILLINOIS 



DEPARTMENT OF REGISTRATION AND EDUCATION 



A. M. Shelton, Director 



BOARD OP 



NATURAL RESOURCES AND CONSERVATION 



A. M. Shelton, Chairman 



Wn.LiAM Trelease, Biology 

 Henry C. Cowtes Forestry 

 Edson S. Bastin, Geology 

 William A. Notes, Chemistry 



John W. Alvoud, Engineering 

 Kendkic C. Babcock, Representing the 

 President of the University of Illi- 

 nois 



THE NATURAL HISTORY SURVEY DIVISION 

 Stephen A. Porbes, Chief 



ScHNEPp & Barnes, Printers 



Springfield, 111. 



1926 



