Prince William Sound. This was a new locality for all in the party except the writer who had visited the glaciers of the northern inlets in 1931.2 All these were revisited in 1935 and the work was extended to the glaciers on the western side of the sound which had not been carefully studied for twenty-five years.3 A number of the inlets and ice-fronts were triangulated and the many photographic stations in these inlets were occupied. These observations were further augmented by air pictures taken on a flight over most of the ice tongues. Soundings were also made in a number of localities where either none had been previously recorded, or where the submarine topography had shown evidence of recent change.

In general the termini of the large glaciers were found to be unchanged or advancing while the termini of the small glaciers and those issuing from low level snowfields were mostly in a state of retreat. Starting with Valdez Glacier and proceeding westward along the north side of the Sound, the conditions of the termini of the principal glaciers in relation to the observations made in 1931 were as follows: Valdez Glacier, continued retreat; Shoup Glacier, no change ; Columbia Glacier, advance on all parts of the terminus; Meares Glacier, no change; Yale Glacier, advance of part of the terminus ; Harvard Glacier, small advance ; Smith, Vassar and Wellesley Glaciers, little change; Bryn Mawr Glacier, in part advanced ; Barry Glacier, unchanged on most of the terminus, but advanced on the west side ; Cascade, Serpentine and Surprise Glaciers, unchanged ; Baker Glacier, advanced ; Harriman Glacier, advanced; Dirty Glacier, retreat; and Roaring and Wedge Glaciers, unchanged. The glaciers of the west side of Prince William Sound had not been studied since 1910. The relative changes in the termini since that time were as follows: glaciers of Portage Bay, retreat ; glaciers of Blackstone Bay, mostly unchanged ; Tebenkof Glacier, retreat; glaciers of Port Nellie Juan, retreat; Princeton Glacier, retreat ; Chenega Glacier, unchanged ; Tiger’s Tail Glacier, unchanged; and Tiger Glacier, probably slightly advanced.