STATE OP ILLINOIS 



DEPARTMENT OF REGISTRATION AND EDUCATION 



A. M. Shei.tox. Director 



BOARD OF 



NATURAL RESOURCES AND CONSERVATION 



A. M. Shelton. Chairman 



Wlliam Tkelease, Biology John W. Alvord. Engineering 



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



Edson S. Bastin, Geology President of the I'nivrrsity of IIU- 



WiLi-iAj[ A. NoYES, Chemistry nois 



THE NATURAL HISTORY SURVEY DIVISION 

 Stephen A. Poures. Chief 



•-'S^^^S^^ 



Scii.NKi'f & Barnes, Printers 



Springfield. III. 



1925 



