Lunch. Very cold last night—minimum -41.5°. Cold start to march, too, as usual now. Got away at 8 and have marched within sight of depot; flag something under 3 miles away. We did 11 1/2 yesterday and marched 6 this morning. Heavy dragging yesterday and very heavy this morning. Apart from sledging considerations the weather is wonderful. Cloudless days and nights and the wind trifling. Worse luck, the light airs come from the north and keep us horribly cold. For this lunch hour the exception has come. There is a bright and comparatively warm sun. All our gear is out drying.