38 



THE NATIONAL GEOGRAPHIC MAGAZINE 



MORAINE-VENEERSD EAST MARGIN OE HUBBARD GEACIER IN I909 

 Showing dark-colored ice projecting through moraine, as if glacier were about to advance 



iember, 1899. Avalanches accompanied 

 these shocks also. These facts may com- 

 plicate the situation somewhat. 



•OTHER RESUETS OF THE NATIONAE GEO- 

 GRAPHIC society's 1909 EXPEDITION 



The problems connected with the re- 

 markable changes in the Yakutat Bay 

 glaciers, and with the explanation of 

 these changes, have claimed first atten- 

 tion from the authors, for these seemed 

 to be the most inviting and important 

 phases of work on Alaskan glaciers at 

 -present open to the student. It scarcely 

 requires statement, however, that other 

 problems also received attention of stu- 

 dents of glaciers and glaciation whose 

 good fortune it was to be given the op- 

 portunity to study in a field so rich in 

 ■glacial phenomena as that of the Alaskan 

 ■coast. This is not the place for a full 

 statement of the results of our summer's 

 work; that must be deferred until the ap- 

 pearance of our final report. Still a sum- 

 inary of some of the more important 



phases of these other results may appro- 

 priately be introduced here. 



The Alaskan Coast region is not only 

 the seat of the largest glaciers on the con- 

 tinent, and in fact of some of the largest 

 in the world, outside of the Arctic and 

 Antarctic regions, but also of some of the 

 most interesting and least known. There- 

 fore any study of these glaciers promises 

 important results, and studies of one 

 year will serve as a basis for future com- 

 parative studies. From this latter stand- 

 point it has seemed to us highly important 

 not only to provide descriptions of gla- 

 ciers, but also to prepare maps of such 

 detail as to give an accurate basis for 

 future comparative study. Accordingly, 

 the topograhper of the expedition, Mr 

 W. B. Lewis, whom the U. S. Geo- 

 logical Survey detailed for this work, 

 assisted by Mr E. F. Bean, has made a 

 series of detailed contour maps of the 

 principal glaciers studied. These will be 

 published with our final report. Sup- 

 plementary to maps, photographs from 



