Contains results of author's investigations in this region (58° 30' N, 134° 04' W) during the Juneau Ice Field Research Project in 1953. An attempt was made to determine extent and dates of the late postglacial maxima of Taku and Norris Glaciers. Forest trimlines were studied from aerial photographs and in the field, and annual growth rings were counted. The maximum attained by the Norris Glacier in 1910, probably greater than any since about 1200 A.D., is apparently unique among Juneau Ice Field glaciers; it may represent, however, a minor advance in 1910 on a high level maintained since mid-18th century. Taku Glacier reached maximum in the mid-18th century, its height near the present terminus; advancing since about 1900, Taku may now have reached its present maximum.
The "glacierized" highland rim of the Eastern Arctic extends north for 1,600 miles from southern Baffin Island to northernmost Ellesmere. Ice forms include glacier caps, highland, transection, valley, cirque, and piedmont glaciers, and shelf ice on the north coast of Ellesmere. Incidental ice observations prior to, and glaciological work after 1945 are reviewed, and some results given of the latter: Baffin Island Expeditions of the Arctic Institute in 1950 to the Clyde area and Barnes Icecap; in 1953 to Penny Highland Icecap on Cumberland Peninsula; Ellesmere Ice Shelf Expeditions of Hattersley-Smith and others in 1953 and 1954; and investigations by J. Mercer on Grinnell and Terra Nivea Icecaps in southern Baffin, 1952 and 1953. General appearance and budgetary state of Canadian Arctic glaciers are noted, with suggestions of future glaciological, geomorphological, and bathymetrical problems.
Report complementary to Hattersley-Smith and others' (AB. No 40304). Ice cores obtained near Ward Hunt Island (83 05 N, 75 W) and on trips along the coast showed four ice types composing the shelf: iced firn, glacier, lake, and sea ice. The thick primary portion of the shelf seems to be composed stratigraphically of three major ice units. The uppermost consisting of granular iced firn untouched by sea water, with associated lenses of lake ice, is separated by a dirt layer from the middle unit, similarly composed but soaked by migrating sea water. Evidence indicates the lowest unit to be glacier ice (or sea ice interfingered with glacier or lake ice) upon which the iced firn accumulates. The process is briefly described.
Contains a study on the circumpolar distribution of the oribatids and collemboles, very small insectlike creatures of the soil. Emphasis is placed on Greenland as a possible route between the Old World and the New, for this fauna, and for fauna in general.
The items include: 1) a summary, by A.W. Mansfield, of the eastern Arctic fisheries investigations carried out by the Fisheries Research Board of Canada between 1947 and 1955; 2) details on the publication of an Index for "The Beaver, Magazine of the North" covering issues from October 1920 to March 1954; 3) information on the biology and ecology of Arctic entomostacan fauna and the ecology of Arctic lakes, work that was carried out at the Danish Arctic Station in the summer of 1954; 4) information on a ten-day seminar on Arctic meteorology that was given at the McGill Geography Summer School at Stanstead College, Stanstead; and 5) errata for vol. 8, no. 1.