STATE OF ILLINOIS 

 DEPARTMENT OF REGISTRATION AND EDUCATION 



A. M. Shei.tox, Director 



BOARD OF 

 NATURAL RESOURCES AND CONSERVATION 



A. M. Shelton, Chairman 



William Trelease, 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 



THE NATURAL HISTORY SURVEY DIVISION 



Stephen A. Forbes, Chief 



(40689— IM— 10-25) 



