The doctor nursed the invalids with the greatest care, and it made him miserable to see the sufferings he could not alleviate. He did all he could to keep his companions in good spirits; he talked to them, read to them, and told them tales, which his astonishing memory made it easy for him to do. He was often interrupted by the complaints and groans of the invalids, and he stopped his talk to become once more the attentive and devoted doctor. His health kept up well; he did not get thinner, and he used to say that it was a good thing for him that he was dressed like a seal or a whale, who, thanks to its thick layer of fat, easily supports the Arctic atmosphere. Hatteras felt nothing, either physically or morally. Even the sufferings of his crew did not seem to touch him. Perhaps it was because he would not let his face betray his emotions; but an attentive observer would have remarked that a man's heart beat beneath the iron envelope. The doctor analysed him, studied him, but did not succeed in classifying so strange an organisation, a temperament so supernatural. The thermometer lowered again; the walk on deck was deserted; the Esquimaux dogs alone frequented it, howling lamentably. There was always one man on guard near the stove to keep up the fire; it was important not to let it go out. As soon as the fire got lower, the cold glided into the room; ice covered the walls, and the humidity, rapidly condensed, fell in snow on the unfortunate inhabitants of the brig. It was in the midst of these unutterable tortures that the 8th of December was reached. That morning the doctor went as usual to consult the exterior thermometer. He found the mercury completely frozen. "Forty-four degrees below zero!" he cried with terror. And that day they threw the last lump of coal into the stove. CHAPTER XXVII CHRISTMAS There was then a movement of despair. The thought of death, and death from cold, appeared in all its horror; the last piece of coal burnt away as quickly as the rest, and the temperature of the room lowered sensibly. But Johnson went to fetch some lumps of the new fuel which the marine animals had furnished him with, and he stuffed it into the stove; he added some oakum, impregnated with frozen oil, and soon obtained enough heat. The smell of the grease was abominable, but how could they get rid of it? They were obliged to get used to it. Johnson agreed that his expedient left much to wish for, and would have no success in a Liverpool house. "However," added he, "the smell may have one good result." "What's that?" asked the carpenter. "It will attract the bears; they are very fond of the stink." "And what do we want with bears?" added Bell. "You know, Bell, we can't depend on the seals; they've disappeared for a good while to come; if the bears don't come to be turned into fuel too, I don't know what will become of us." "There would be only one thing left; but I don't see how----"