R. 37. Lunch Temp.-9.8º; Supper Temp. -12º. Started in sunshine, wind almost dropped. Luckily Bowers took a round of angles and with help of the chart we fogged out that we must be inside rather than outside tracks. The data were so meagre that it seemed a great responsibility to march out and we were none of us happy about it. But just as we decided to lunch, Bowers’ wonderful sharp eyes detected an old double lunch cairn, the theodolite telescope confirmed it, and our spirits rose accordingly. This afternoon we marched on and picked up another cairn; then on and camped only 2 1/2 miles from the depot. We cannot see it, but, given fine weather, we cannot miss it. We are, therefore, extraordinarily relieved. Covered 8.2 miles in 7 hours, showing we can do 10 to 12 on this surface. Things are again looking up, as we are on the regular line of cairns, with no gaps right home, I hope.