After surveying this wonderful object, they returned to the sledge and pitched the tent, seeing no way of proceeding farther; and there they remained a day or two to get a good look at the surroundings before deciding upon the proper course to pursue. A decided fall in the temperature was quite noticeable, due, doubtless, to the proximity of the glacier. They got to sleep after a while, and during the day took a good rest, getting up in the afternoon. The twain went again to reconnoitre, leaving Frederick to hunt, or amuse himself in any other way he chose. They went to the glacier-wall again, and followed along its foot to the south side of the valley. This wall was beautiful and imposing. From the top, one third of the way downward, the ice was of a charming green color, and looked like glass; below this came a white surface, in which small stones were numerous imbedded in the ice, with here and there streaks of a brownish color, like chocolate ice-cream mixed with vanilla. A close approach showed that it was earth. At the foot of the wall, probably concealing a “terminal moraine,” was an undulating bank of snow, and over the upper edge of the wall hung wreaths of drifted snow that looked like the icing of cake. The ground for some distance out was strewed with blocks of ice and stone of all imaginable shapes and sizes. On reaching the corner of the glacier, a similar wall was seen extending up along its flank, abutting against an inclined plain of immense bowlders and masses of rock, the _débris_ from the cliffs above. The angle thus formed was full of large blocks of ice, many recently detached from the wall of ice. Traveling along the flank proved so difficult that they took to the incline and scrambled for some time over immense masses of rock and snow, often across deep cracks and openings concealed by the snow covering them. After gaining an altitude of several hundred feet, they reached something like a terrace formation, from which they overlooked all the lower part of the glacier. It presented an undulating and gradually rising surface, extending up the valley fifteen or twenty miles, or more. Just opposite to them, a branch glacier came in from the north through a gap in the mighty cliffs. The slope of this branch in places was very precipitous, showing great rents and fissures. The surface of the glacier was free from snow, except, here and there, in what seemed little depressions in the ice. There was no way of climbing upon the glacier, much less of getting the sledge and dogs up. It would simply have been ascending a precipice of ice two hundred feet high. To get upon it had been their original intention, although Frederick went through a pantomime at the time, which they did not exactly understand, expressing how a sledge would go faster and faster, and finally shoot over the edge like a waterfall. Whether he ever had had such an experience in Greenland he did not say, but he would never have had it more than once.