There can be no question as to the value of dogs as a means of traction in the Polar regions, except when travelling continuously over very rugged country, over heavily crevassed areas, or during unusually bad weather. It is in such special stances that the superiority of man-hauling has been proved. Further, in an enterprise where human life is always at stake, it is only fair to put forward the consideration that the dogs represent a reserve of food in case of extreme emergency. We continued due eastwards until five o'clock on the afternoon of the 17th at an altitude of two thousand six hundred feet. On the crest of a ridge, which bore away in distinct outline, on our left, a fine panorama of coastal scenery was visible. Far off on the eastern horizon the Mertz Glacier Tongue discovered itself in a long wall touched in luminous bands by the south-western sun. A wide valley fell away in front, and beyond it was a deep indentation of the coastline, which would make it necessary for us to follow a more southerly course in order to round its head. I determined to convey to the other parties my intentions, which had become more defined on seeing this view; and, in the meantime, we halted and treated ourselves to afternoon tea. This innovation in the ordinary routine was extended to a custom by saving a portion of the lunch ration for a "snack" at 5 P.M. on all days when the weather was moderately good. As latitude sights were required at midday and longitude shots at 5 P.M., the arrangement was very convenient, for, while one of us made tea, the other two took the observations. About 6 P.M. the two man-hauled sledges came up with us, our plans for the future were reviewed and the final instructions were given. We bade our comrades adieu and, turning to the south-east, descended quickly down a long slope leading into the valley. The sky was overcast and it was almost impossible to see the irregularities of the surface. Only a dull-white glare met the eyes, and the first indication of a hillock was to stub one's toes against it, or of a depression to fall into it. We pulled up the dogs at 7.30 P.M. after covering thirteen and a quarter miles in the day. At 9.45 A.M. on November 18 everything was ready for a fresh start. The other parties could be seen rapidly bearing down on us under full sail, but our willing teams had soon dragged the three sledges over an eminence and out of their sight. It was a lovely day; almost like a dream after the lengthy months of harassing blizzards. A venturesome skua gull appeared at lunch time, just as an observation for latitude was being taken. By the time Ninnis had unpacked the rifle the bird had flown away. The direction of the sastrugi was found to vary from that which obtained farther west, owing to a slight swing in the direction of the prevailing wind. The irregularities in the coastline account for this; the wind tending to flow down to sea-level by the nearest route.