SKETCHES 



THE PHYSICAL GEOGRAPHY 



GEOLOGY 



NEBRASKA. 



SAMUEL AUGHEY, PH.D., LL.D., 



Professor of Natural Sciences in the University of Nebraska, Corresponding Member of the 



Buffalo Academy of Sciences, Correspond! g Member of the 



St. Louis Academy of Sciences, Etc. 



OMAHA, NEBRASKA : 



DAILY REPUBLICAN BOOK AND JOB OFFICE. 



1880. 



