In the midst of the mêlée a terrible rumbling sound suddenly drowned the tumult, the ground became violently agitated, and the house rocked as if it were being torn up from its foundations. The beams of the walls separated, and through the openings Hobson and his companions saw the terrified bears rushing away into the darkness, howling with rage and fright. CHAPTER XXII. FIVE MONTHS MORE. A violent earthquake had shaken Cape Bathurst. Such convulsions were probably frequent in this volcanic region, and the connection between them and eruptions was once more demonstrated. Hobson well understood the significance of what had occurred, and waited in anxious suspense. He knew that the earth might open and swallow up the little colony; but only one shock was felt, and that was rather a rebound than a vertical upheaval, which made the house lean over towards the lake, and burst open its walls. Immediately after this one shock, the ground again became firm and motionless. The house, although damaged, was still habitable; the breaches in the walls were quickly repaired, and the pipes of the chimneys were patched together again somehow Fortunately the wounds the soldiers had received in their struggle with the bears were slight, and merely required dressing. Two miserable days ensued, during which the woodwork of the beds and the planks of the partition walls were burnt, and the most pressing repairs executed by Mac-Nab and his men. The piles, well driven into the earth, had not yielded; but it was evident that the earthquake had caused a sinking of the level of the coast on which the fort was built, which might seriously compromise the safety of the building. Hobson was most anxious to ascertain the extent of the alteration of elevation, but the pitiless cold prevented him from venturing outside. But at last there were symptoms of an approaching change in the weather. The stars shone with rather less brilliancy, and on the 11th January the barometer fell slightly; hazy vapours floated in the air, the condensation of which would raise the temperature; and on the 12th January the wind veered to the south-west, and snow fell at irregular intervals. The thermometer outside suddenly rose to 15° above zero, and to the frozen colonists it was like the beginning of spring. At eleven o’clock the same morning all were out of doors. They were like a band of captives unexpectedly set free. They were, however, absolutely forbidden to go beyond the enceinte of the fort, in case of awkward meetings. The sun had not yet reappeared above the horizon, but it approached it nearly enough to produce a long twilight, during which objects could be distinctly seen to a distance of two miles; and Hobson’s first thought was to ascertain what difference the earthquake had produced in the appearance of the surrounding districts.