ANCIENT KOBUK GLACIER OF ALASKA QI 
probably fed chiefly from the tributary glaciers on the southern slope 
of the Endicott range. The limestone, schist, and vein quartz drift on 
the north shore of Hotham Inlet was probably dragged from the hills 
on the north side of the Kobuk Valley (which are known to be made 
up largely of such rocks); the gabbroic drift of the peninsula prob- 
ably was secured in the Hotham Peak range lying south of the 
Kobuk Valley. If there has been no important change in the relation 
between land and sea, the Kobuk glacier entered the Arctic Ocean. 
BERKELEY, CAL. 
April 17, 1908 
