“Knock up the bottom, and let it fall through.”

“Well, that’s what we are doing,” said Steve to himself; and then he watched as the Norseman toiled away till he could get one hand through the opening he had made.

“Mind!” cried Steve. “Put on your glove, or you’ll take the skin off.”

“No,” said Johannes gravely, “not yet awhile. It does not freeze in that way now; that is when the colder weather sets in. The sun is warming the air too much everywhere. Look, there are drips forming.” He worked as he spoke, and now sent the snow and ice showering down from the cask, till at last there was quite a little avalanche, after which he drew himself up inside, let the door close, and scraped and worked away, throwing out consolidated portions, and then sweeping the snow-dust till he could open the trap partially and shuffle it out with his feet. “Warm work, sir,” he said at last, as he looked over the edge and down at Steve.

“Let me come and have a turn, then, for it’s horribly cold here.”

“Come along, then,” said the Norseman; “there’s room now.”

There was an unusual sensation of numbness in Steve’s arms as he climbed back on to the wooden spells, and he knew that he had been motionless quite long enough; and he could not help feeling that if he had remained there another hour clinging to the icy shrouds he would not have been able to live. But the circulation began to return as soon as he exerted himself, and, after a little effort, he squeezed himself up through the bottom of the cask, the trap fell into its place, and he dragged the case of the glass round to the front so as to get at the double telescope.

The scene from the deck had been wonderful, but from the interior of the crow’s-nest the wonder was vastly increased, and Steve could have stood there for hours, sweeping with the glass in all directions, gazing with delight at the floating ice-islands of every form and size, from the little block that could be thrust aside with a boat-hook to the field or detached floe a mile across; and all in motion, drifting with the current toward the north-east, and rising and falling on the heavy swell left by the storm. There was an incessant cracking roar, too, from all around, as the blocks came in contact and ground together; while from time to time, consequent upon undulation of the surface, a field split right across with a tremendous report.

But there was no time to study the beauty of the surroundings, and Steve had to leave all contemplation of the silver islands floating upon a black sea, to try and trace the open water from where they were right up to the land.

Twice over he was at fault, as he supposed, for he followed with the glass a broad, canal-like line of clear water quite a couple of miles, and then it appeared to be blocked up with ice. He said so to Johannes; but the Norseman shook his head.