Snow-blindness had now begun to make itself felt for the first time. I for one had my first experience of it that afternoon. During the halt at lunch I put on yellow goggles in place of the smoked ones I had been wearing, and in a quarter of an hour the change of colour had 'settled' my eyes for the time being. The afternoon was very hot. The thermometer stood at 10 degrees F. at 4 P.M., but the still air made it almost insupportable. By the time the load was hauled up out of the basin, we were streaming with perspiration. Before halting, we sighted a dark, distant ridge, thirty miles away, and the course was corrected by its bearing. Our extravagant hopes of finding a permanently calm region had been dwindling for the last few miles, as a hard bottom, a few inches under the surface, had become evident. They were finally dispelled by a south-west wind springing up during the night. As every one was beginning to feel the hard work after another oppressive afternoon on the 20th, we decided to have an easy march next day and to build our first depot. Of course we had hoped to have been farther out before sending back the supporting party, but the weather had settled the question. On the 21st, taking things as easily as a thirty-five mile wind would permit, we pulled on, up and down small undulations till 4 P.M. when we encountered a small rise, with the next ridge a considerable distance ahead. The depot was to be built here. Webb at once proceeded to take full magnetic declination, time and azimuth observations, Laseron recording for him. Murphy put in a miserable hour over the primus melting snow. He was rather snow-blind and his eyes must have contributed a good deal of water to the pot. The water was poured into food-bags filled with snow, which were buried, encircled by wire slings, in holes. Here they froze, making excellent holdfasts for the depot flag. Depot flags had been exercising our ingenuity for months before the start, ordinary forms being destroyed by the wind in a few hours. Webb had finally built the perfect flag of the wind-vane type: a V of pieces of blackened Venesta board with light struts at the back and a piece of aeroplane tubing at the apex which slipped over the bamboo pole. The pole, of two bamboos, stood sixteen feet from the ground and was provided with two sets of flexible steel stays. Close by, Hurley and Hunter had built a snow mound ten feet in diameter and ten feet in height, finished off with a capping of snow blocks wrapped in black bunting. Next day it was blowing a little harder and the sky was overcast, snow falling all day. What bad light means can be gathered from the fact that Laseron on crawling out of the tent in the morning raised an alarm that our tent had been blown away in the night. It turned out that our tent was hidden by a mound which he could not see, though only about ten yards from it.