"'Son,' said he, 'that is no iceberg; that's ancient ice, perpetual ice, the great ice-ring--palæcrystic ice, you scientific fellows call it. I saw it once before, in thirty-seven, when a boy; that's it, and, son, beyond that there is something. Take notice that that is ice; clear, glary ice. You know a so-called iceberg is really a snowberg; it's three-fourths under water. Now, it may be possible that, that being ice which will float more than half out of water, the northern currents may go under it--but I don't believe it. Under or over, I am going to find one of 'em, if it takes till doomsday.' "We sailed west, around close to this great wall of ice, for two weeks, without seeing any evidence of a current of any kind, until there came on a storm from the northwest that drove a great deal of ice around the great ring; but it seemed to keep rather clear of the great wall of ice and to go off in a tangent toward the south. The lead showed no bottom at one hundred fathoms, even within a quarter of a mile of the ice. "It was getting late in the season, the mercury often going down to fifteen below zero, and every night the aurora became brighter. We sailed slowly around the open water, and finally found a place where the sheer precipice of ice disappeared and the shore sloped down to something like a beach. Putting out a sea-anchor, the 'Duncan McDonald' kept within a half-a-mile of this icy shore. The captain had determined to land and survey the place, which far away back seemed to terminate in mountain peaks of ice. "That night the captain and I sat on the rail of our ship, talking over the plans for to-morrow's expedition, when the ship slowly but steadily swung around her stern to the mountain of ice--the engines had been moving slowly to keep her head to the wind. Captain Burrows jumped to his feet in joy. 'A current!' he shouted; 'a current, and toward the north, too--old man Providence again, son; he allus takes care of his own!' "Some staves were thrown overboard, and, sure enough, they floated toward the ice; but there was no evidence of an opening in the mighty ring, and I remarked to Captain Burrows that the current evidently went under the ice. "'It looks like it did, son; it looks like it did; but if it goes under, we will go over.' "After we had taken a few hours of sleep, the long-boat landed our little party of five men and seven dogs. We had food and drink for a two weeks' trip, were well armed, and carried some of our instruments. It appeared to be five or six miles to the top of the mountain, but it proved more than thirty. We were five days in getting there, and did so only after a dozen adventures that I will tell you at another time.