Smithsonian Report. 1950. Black 





♦ '^': -6 



1. Thin veinlels, granules, and large mass of clear ice in organic-rich silt deposit 

 near Barrow, Alaska. Photographed July 31, 1947. 



2. Large individual crystals of ice in permafrost at a depth of about 20 feet in 

 "muck" exposed by placer operations at Fairbanks Creek, Fairbanks, 

 Alaska. Photographed July 2, 1950. 



