AMERICAN SCIENCE SERIES— ADVANCED COURSE 



h GEOLOGY^- 



\/ PA L ■^ From the Library or 



REMINGTON KELLOGG 



THOMAS C. q^AMBERLIN AND ROLLIN D. SALISBURY 



Heads of the Departments of Geology and Geography, University of Chicago 

 Members of the United States Ge(dogical Survey 

 Editors of the Journal of Geology 



IN THREE VOLUMES 



VOL. L-GEOLOGIC PROCESSES AND THEIR RESULTS 



SECOND EDITION, REVISED 



'Ufertebrofe Paleontology 



m S. National Museu^t^ 



NEW YORK 



HENEY HOLT AKD COMPANY 

 1909 



