DEPARTMENT OF THE INTERIOR 

 UNITED STATES GEOLOGICAL SURVEY 



GEORGE OTIS SMITH, DIBECTOR 



By CHARLES QILMAN JTTDg 



Referred to 



Attended to by 

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PROFESSIONAL PAPER 86 



THE 



TRANSPORTATION OF DEBRIS BY RUNNING WATER 



BY 



GROVE KARL GILBERT 



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BASED ON EXPERIMENTS MADE WITH THE ASSISTANCE OF 



EDWARD CHARLES MURPHY 



WASHINGTON 



GOVERNMENT PRINTING OFFICE 



1914 



