& £X -2. 



PROCEEDINGS 



df the 



OHIO STATE ACADEMY <jf SCIENCE 



- 



Volume IV, Part 4. 



Special Papers jVo. 10. 



ECOLOGICAL STUDY 

 qf BRUSH LAKE 



BY 



John H. Schaffner 

 Otto E. Jennings 

 Frederick J. Tyler 



\* 



^ 



COLUMBUS, OHIO. 

 1904. 



