160 



ILLINOIS STATE ACADEMY OF SCIENCE 



/ROC/r /P/1/Z7? WOOD/.A/VD 



AT /9/9 A^D /a'^O 



ROCK RIVER WOODLANDS 



Showing their original extent, based on the map issued by the County 



Superintendent of Schools in 1900. and on field sketches 



by the writer in 1919. 



