pole pointed with iron, to push back the most threatening packs. Before long, the brig entered a narrow pass between two high blocks, so narrow, that the tops of the sails touched the rock, like walls on either side. This led into a winding valley, full of whirling, blinding snow, where masses of drift ice were dashing furiously against each other, and breaking up into fragments with loud crackings.
But it was soon but too evident that there was no outlet to this gorge; an enormous block was right in front of the ship, and drifting rapidly down on her. There appeared no way of escape, for going back was impossible.
Shandon and Johnson stood together on the forepart of the vessel, surveying her perilous position; Shandon giving orders with one hand to the steersman and with the other to James Wall, who transmitted them to the chief engineer.
"How is this going to end, Johnson?"
"As Heaven pleases," was the boatswain's reply.
The ice-block, an enormous berg a hundred feet high, was now within a cable's length of the Forward, threatening her with instant destruction.
It was a moment of intense agonizing suspense, and became so unbearable that the men flung down their poles in spite of Shandon's commands, and hurried to the stern.
Suddenly a tremendous noise was heard, and a perfect waterspout broke over the deck. An enormous wave upheaved the ship, and the men cried out in terror, all but Garry, who stood up quietly at the helm, and kept the vessel in the right course.
But when the men recovered themselves a little, and ventured to look the gigantic foe again in the face, it was gone! The whole berg had completely disappeared, the pass was free, and there was a long channel beyond, lighted up by the oblique rays of the sun, which offered an uninterrupted passage to the Forward.
"Well, Mr. Clawbonny," said Johnson; "how do you explain this phenomenon?"
"It is one that often occurs, and is very simple, my good friend," replied the Doctor. "When these floating icebergs become detached at the time of the thaw, they sail separately along and preserve their equilibrium perfectly, but as they gradually drift farther south, where the water is relatively warmer, they begin to melt and get under-
