Work on the cabin was resumed as soon as possible, and the walls rose like magic with the increased force of builders. In a few days these were completed. An opening was sawn in the front for a door, and smaller ones in each side for windows, the sawn ends of the logs being held in place by the door-frame and window-frames, which consisted of small hewn strips of spruce wood nailed in place. The roof was now constructed of poles laid side by side from the ridge-logs to the upper logs of the front and rear walls. David and Roly gathered great quantities of green spruce boughs, which were laid on the top of the roof-poles. This proved to be a mistake, but in the hurry of building, nobody thought of it. Later, as soon as these boughs dried, the needles came rattling down through the cracks upon the slightest provocation, and were a great nuisance when cooking was in progress. A layer of damp moss should first have been spread upon the poles, then the spruce, and finally a thick layer of moss over all. This upper layer was duly applied, and being soft and spongy, contributed in no small degree to the waterproof quality of the roof, which was rather more flat than such a roof should be. As an additional protection against rain, several tents were spread above the moss, and now the cabin was complete, except for the "chinking," and interior furnishings. "Chinking" is the filling of the cracks between the logs. The boys soon became skilled in this work, and most of it was left for them to do, while the men were engaged in heavier labors. Small dead spruces, slender and straight as bean-poles, were first cut down in large numbers. These were trimmed as nearly as possible to the size and shape of the cracks, and driven firmly into place with the blows of a hatchet. Such crevices as still remained were stuffed with moss and clay. The door consisted of a light framework of poles, covered with cheese-cloth, of which Pennock had a supply; and the windows were of the same material. Though not transparent, it admitted a goodly amount of light, and promised to keep out insects and the wind. Within the house, a sheet-iron stove was set up in the opening left for a fire place, which was then enclosed above and on the sides and rear, with poles set close together and chinked, an aperture being left for the stove-pipe. Sleds were so arranged as to form a dining-table and seats.