U. S. GEOLOGICAL SURVEY 



PROFESSIONAL PAPER NO. 20 PL. XVI 



A. BARRIER REEF AND ESKIMO GRAVE ON ARCTIC COAST NEAR ICY CAPE. 



Looking S. 25° W. 



B. ABANDONED PLEISTOCENE FLATS OF COLVILLE RIVER, SHOWING MOUNDS AND LAKELETS. 



From 30 miles inland ; looking N. 80° E. 



