670 HARRY FIELDING REID 
The Grand Pacific Glacier, which debouches into the upper end 
of Glacier Bay on the south and into the valley of the Alsek 
River on the north, seems to be retreating in its northern portion 
(Netland). This is in conformity with the marked retreat of its 
southern end, reported for several years. 
Dr. L. S. Camicia has been keeping a record since rgor of the 
position of the Valdez Glacier, Prince William Sound, Alaska. A 
stone monument was made on the moraine in front of the glacier 
and the distance to the ice determined. He found the following 
variations, measurements having been made in June of each year: 
IgoI—2, a retreat of 39 feet; 1902-4, 165 feet; 1904-5, 138 feet. 
The next observation was made in October, 1908; as the monument 
had been destroyed, he estimated its position as well as he could, 
and found a retreat since the last observation of 244 feet, making 
a total retreat from tgor1—8 of 586 feet. ‘The destruction of the monu- 
ment seems entirely explained by the advance recorded in the follow- 
ing account kindly sent me by Professor U. S. Grant: 
NOTES ON THE GLACIERS OF PRINCE WILLIAM SOUND, ALASKA, 1908 
Maps showing the location of these glaciers may be found in Vol. III of the 
Harriman Alaska Expedition, and in Bulletins 284 (p. 79) and 345 (p. 177) of the 
U.S. Geological Survey. 
Valdez Glacier —The western part of the front of this glacier was visited about 
August 1, 1905, and again on July 11, 1908. Some time during this interval the 
glacier has advanced 250 to 350 feet and built a moraine and then retreated nearly 
to its former position. On the extreme western edge the ice in 1908 was about 
100 feet in advance of its position in 1905. - 
Shoup Glacier.—This glacier was visited on July 4, 1905, and on July 13, 1908. 
The front was practically in the same position on each of these dates. 
Columbia Glacier.—This glacier was visited by the Harriman Expedition on 
July 25-27, 1899, and by Grant on July ro, 1905, and July 15, 1908. At the north 
end of Heather Island photographs show the precise position of the front of the 
glacier at these three dates. In 1905 the ice front had retreated 160 feet from 
its position in 1899, and in 1908 it had advanced 112 feet beyond its position in 
1905. 
Glaciers of Icy Bay.—The maps of this bay, which lies west of the south end 
of Chenega Island, show it to be about four and a half miles long, with a glacier at 
its head. A traverse of the shoreline of this bay in 1908 shows it to be about 11 
miles in length with a tide-water glacier at its head. On the north side of the bay, 
6 miles from its head, is a smaller bay, nearly two miles in length; and at the head 
of this smaller bay are two tide-water glaciers. The description of Whidbey, who 
