STATE OF ILLINOIS 



-^JEPARTMKNT OP REGISTRATION AND EDUCATION 



A. M. Shelton, Director 



BOARD OP 



NATURAL RESOURCES AND CONSERVATION 



A. M. Shexton, Chairman 



WixiAM Tkelease, Biology 

 Henry C. Cowles, Forestry 

 Edson S. Bastin, Geology 

 William A. Noyes, Chemistry 



John W. Alvoed, Engineering 

 Kendric C. Babcock, Representing the 

 President of the University of Illi- 

 nois 



THE NATURAL HISTORY SURVEY DIVISION 

 Stephen A. Porbes, Chief 



ScHNBTP & Barnes, Printers 



Springfield, III. 



1926 



49289—2500 



