There was nothing to be done but to return to his burrow and make himself as comfortable as circumstances would permit. His first care was to clear away the snow which he had thrown back under the boat as he dug his way out, and which partially filled his cave. And when this was done he selected a sharp stick and with it made three or four air holes in the roof of the drift above his door, to furnish ventilation, for it was not long before the entrance of the passageway was again closed.