After crossing a second ravine, on the north side of which the ground rose considerably, we entered upon another snowy plain, where there was nothing to be seen in any direction but snow and sky. To make it the more dreary, a thick fog came on as the night advanced; and as this prevented our taking any mark more than fifty or a hundred yards ahead, we had to place the compass, by which we were now entirely travelling, upon the ground every five minutes; and as it traversed with great sluggishness, we made a very crooked and uncertain course. For more than two hours we did not pass a single spot of uncovered ground, nor even a stone projecting above the snow. The fog continued too thick to allow us to move till six A.M., at which time we resumed our journey. There was a broad and distant haze-bow of very white and dazzling light directly opposite the sun. The weather being still too foggy to see more than a quarter of a mile ahead, it was with considerable difficulty that we could proceed on a tolerably straight course. To effect this, it was necessary to determine the point on which we were walking by the bearing of the sun, which was still visible, and the apparent time, and then to take a mark ahead by which our course was to be directed. From the thickness of the weather, however, it was necessary to repeat this operation every five or ten minutes, which, together with the uniform whiteness and intense glare of the snow, became so extremely painful to the eyes, that Mr. Fisher and myself, who went ahead as guides, soon became affected with snow blindness, and the headmost man at the cart, whose business it was constantly to watch our motions, began to suffer in a similar manner from the same cause. It may, perhaps, be conceived, then, under these circumstances, how pleasing was the relief afforded by our seeing, at eight A.M., a stripe of black or uncovered land ahead, which proved to be the bank of a ravine fifty or sixty feet deep and three hundred yards wide, on the north side of which we pitched the tents, having made good only one mile and a half, the snow being so soft and deep as to make it difficult to drag the cart through it. The latitude observed here was 75° 22' 43", and the longitude, by the chronometer, 111° 14' 26"; in which situation a cylinder of tin, containing an account of our visit, was deposited under a pile of stones eight feet high and seven feet broad at the base.