Bulletin 



OK THB 



Illinois State Laboratory 



OK 



Natural History 



Urbana, Illinois, U. S. A. 



STEPHEN A. FORBES, Ph.D., L.L.D., 

 Director 



Vol. XI. September, 1915 Article H. 



AN ECOLOGICAL STUDY OF PRAIRIE AND FOREST 

 INVERTEBRATES 



BY 



Charles C. Adams, Ph.D. 



