From the 20th to the 30th March, the thaw made rapid progress. Rain fell abundantly and accelerated the dissolution of the ice. It was to be hoped that the ice-field would soon open right across, and that in about fifteen days Hobson would be able to steer his boat into the open sea. He was determined to lose no time, as he did not know but that the Kamtchatka Current might sweep the island to the north before it could come under the influence of the Behring Current. “But,” Kalumah repeated again and again, “there is no fear of that, the breaking up of the ice does not proceed upwards but downwards. The danger is there!” she added, pointing to the south in the direction of the vast Pacific Ocean. The young girl’s confidence on this point reassured Hobson, for he had no reason now to dread the falling to pieces of the island in the warm waters of the Pacific. He meant everybody to be on board the boat before that could happen, and they would not have far to go to get to one or the other continent, as the strait is in reality a kind of funnel through which the waters flow between Cape East on the Asiatic side and Cape Prince of Wales on the American. This will explain the eager attention with which the slightest change in the position of the island was noticed. The bearings were taken every day, and everything was prepared for an approaching and perhaps sudden and hurried embarkation. Of course all the ordinary avocations of the factory were now discontinued. There was no hunting or setting of traps. The magazines were already piled up with furs, most of which would be lost. The hunters and trappers had literally nothing to do; but Mac-Nab and his men, having finished their boat, employed their leisure time in strengthening the principal house of the fort, which would probably be subjected to considerable pressure from the accumulation of ice on the coast during the further progress of the thaw, unless indeed Cape Bathurst should prove a sufficient protection. Strong struts were fixed against the outside walls, vertical props were placed inside the rooms to afford additional support to the beams of the ceiling, and the roof was strengthened so that it could bear a considerable weight. These various works were completed early in April, and their utility, or rather their vital importance, was very soon manifested. Each day brought fresh symptoms of returning spring, which seemed likely to set in early after this strangely mild Polar winter. A few tender shoots appeared upon the trees, and the newly-thawed sap swelled the bark of beeches, willows, and arbutus. Tiny mosses tinged with pale green the slopes under the direct influence of the sunbeams; but they were not likely to spread much, as the greedy rodents collected about the fort pounced upon and devoured them almost before they were above the ground.