A brief account of the work accomplished in the various disciplines is set cut below. It must he emphasised that the conclusions and results presented in this report are provisional only, and await further analysis and consideration.

Altogether 67 days were spent in the field - only three fewer than had originally been planned. This was largely due to the excellent transport arrangements made by Mr. G. Toney, U.S.A.R.P. co-ordinator at McMurdo Sound.

The two main field parties spent a large portion of their time away from the main base, and each covered between 500 and 600 miles on foot.

The schedule of work was planned to fall into four major areas, each supplied with a depot of food and fuel. Thus the backpacking of these necessary but heavy items was cut to a minimum. The areas were: Lake Vida and envirous, including the Olympus Range to the south and the Purgatory Peak area to the north; the country between the Upper Victoria and Miller Glaciers; the Apocalypse Peaks and Balham Valley; and the country surrounding the main base at Lake Vashka. The only trips involving days away from an established depot were to the Webb Glacier area. The field parties worked at the maximum limit of range for back-packing, members carrying loads seldom less than 70 lbs and at times exceeding 100 lbs.

The work followed in general the tentative programme already given. However no gravity work was possible this year since the only available gravimeter (belonging to Geophysics Division, D.S.I.R.) was required elsewhere in the Antarctic.