STATE OF ILLINOIS 



DEPARTMENT OF REGISTRATION AND EDUCATION 



A. M. Sheltox, Director 



BOARD OP 



NATURAL RESOURSES AND CONSERVATION 



A. M. SiiELTON', Chairman 



William Trelease, Biology John W. Alvord, Engineering 



John Coulter!, Forestry Kendric C. Babcock, Representing the 



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



William A. Noyes, Chemistry nois 



THE NATURAL HISTORY SURVEY DIVISION 

 Stephen A. Forbes, Chief 



ScHNEpp & Barnes, Printers 



Sprinofikld, Iix. 



1925 



34185 — 900 



