U. S. DEPARTMENT OF AGRICULTURE. 



BUREAU OF FORESTRY- BULLETIN No. 44. 



GIFFORD PINCHOT, Forester. 



THE DIMINISHED FLOW OF THE ROCK RIVER 

 IN WISCONSIN AND ILLINOIS, 



ITS RELATION TO THE SURROUNDING FORESTS. 



BY 



G. FREDERICK SCHWARZ, 



Field Assistant, Bureau of Forestry. 



WASHINGTON: 



GOVERNMENT PRINTING OFFICE, 



1903, 



