Glaciers in the Pacific Northwest. The advance of many glaciers in the Pacific Northwest is continuing. This year it was necessary to alter our route to the Coleman Glacier measurement-stations because advancing ice discharging over some cliffs, which even last year were below the terminus of the Roosevelt Glacier, had made the previous route unsafe. Photogram- metric measurements were made this year as usual. Topographic maps of the Coleman-Roosevelt Glacier area on Mount Baker have been completed for the years 1954 and 1955 by Dr. Walther Hoffmann, of Munich, Germany, from the photograms taken in those years. From these maps, it was determined that there was an increase of 170 million cubic feet in the volume of the glaciers between 1954 and 1955. It is expected that when the map for 1956 is completed, it will be found that an even greater increase will have occurred between 1955 and 1956 at elevations below 6000 feet, but that there may have been a loss above 6000 feet, due to an unusually dry and sunshiny summer. The 1954-1955 volume increase took place almost entirely below 6000 feet elevation, the height of the surface of the glacier remaining virtually constant above that elevation.

Kermit B. Bengtson