STATE OF ILLINOIS 



DEPARTMENT OP REGISTRATION AND EDUCATION 



A. M. Shelton, Director 



BOARD OF 



NATURAL RESOURCES AND CONSERVATION 



A. M. Sheltox, CTiairvian 



Wlliam Teelease, Biology John W. Alvokd. Engineering 



John M. Coulter, Forestry Kendeic C. Babcock. Representing the 



Edson S. Bastin, Geology President of the University of lUi- 



WiLLiAM A. NoYES. Chcviistry nois 



THE NATURAL HISTORY SURVEY DIVISION 

 Stephen A. Forbes, Chief 



SciiNEpr & Barnbs, Printers 



Springfield. III. 



1925 



34183—900 



