As to the doctor, he was delighted at the situation. He would not have changed it for any other! A winter at the Frozen Pole seemed to him desirable. The crew were set to work at the sails, which were not taken down, and put into the hold, as the first people who wintered in these regions had thought prudent; they were folded up in their cases, and the ice soon made them an impervious envelope. The crow's nest, too, remained in its place, serving as a nautical observatory; the rigging alone was taken away. It became necessary to cut away the part of the field that surrounded the brig, which began to suffer from the pressure. It was a long and painful work. In a few days the keel was cleared, and on examination was found to have suffered little, thanks to the solidity of its construction, only its copper plating was almost all torn off. When the ship was once liberated she rose at least nine inches; the crew then bevelled the ice in the shape of the keel, and the field formed again under the brig, and offered sufficient opposition to pressure from without. The doctor helped in all this work; he used the ice-knife skilfully; he incited the sailors by his happy disposition. He instructed himself and others, and was delighted to find the ice under the ship. "It's a very good precaution!" said he. "We couldn't do without it, Mr. Clawbonny," said Johnson. "Now we can raise a snow-wall as high as the gunwale, and if we like we can make it ten feet thick, for we've plenty of materials." "That's an excellent idea," answered the doctor. "Snow is a bad conductor of heat; it reflects it instead of absorbing it, and the heat of the interior does not escape." "That's true," said Johnson. "We shall raise a fortification against the cold, and against animals too, if they take it into their heads to pay us a visit; when the work is done it will answer, I can tell you. We shall make two flights of steps in the snow, one from the ship and the other from outside; when once we've cut out the steps we shall pour water over them, and it will make them as hard as rock. We shall have a royal staircase." "It's a good thing that cold makes ice and snow, and so gives us the means of protecting ourselves against it. I don't know what we should do if it did not." A roofing of tarred cloth was spread over the deck and descended to the sides of the brig. It was thus sheltered from all outside impression, and made a capital promenade; it was covered with two feet and a-half of snow, which was beaten down till it became very hard, and above that they put a layer of sand, completely macadamising it. "With a few trees I should imagine myself in Hyde Park," said the doctor, "or in one of the hanging gardens of Babylon."