In sleeping they usually lie across the banquette with their feet to the wall, but sometimes, when there are few people in the house, lie lengthwise, and occasionally sleep on the floor under the banquette. Petitot says that in the Mackenzie region only married people sleep with their heads toward the edge of the banquette. Children and visitors lie with their heads the other way.[N129] (See Fig. 9, ground plan and section of house, and Figs. 10 and 11, interior, from sketches by the writer. For outside see Fig. 12, from a photograph by Lieut. Ray). [Footnote N129: Monographie, etc., p. xxiii.] At the back of the house is a high oblong scaffolding, made by setting up tall poles of driftwood, four, six, or eight in number, and fastening on cross pieces about 8 or 10 feet from the ground, usually in two tiers, of which the lower supports the frames of the kaiaks and the upper spears and other bulky property. Nothing except very heavy articles, such as sledges, boxes, and barrels, is ever left on the ground. A man can easily reach this scaffold from the top of the house, but it is high enough to be out of reach of the dogs. The cross pieces are usually supported on crotches made by lashing the lower jaw of a walrus to the pole, so that one ramus lies along the latter. Scaffolds of this sort, usually spoken of as “caches” or “cache frames,” are of necessity used among the Eskimos generally, as it is the only way in which they can protect their bulky property.[N130] [Footnote N130: See for instance, Crantz, History of Greenland, vol. 1, p. 141; Franklin, 1st Exped., vol. 2, p. 194 (Coppermine River); 2d Exped., p. 121 (Mouth of the Mackenzie, where they are made of drift logs stuck up so that the roots serve as crotches to hold the cross pieces); Hooper, Tents, etc., pp. 48, 228, and 343 (Plover Bay, Point Barrow, and Toker Point); J. Simpson, op. cit., p. 256 (Point Barrow); Nordenskiöld, Vega, vol. 2, p. 92 (Pitlekaj).] Around Norton Sound, however, they use a more elaborate structure, consisting of a regular little house 6 feet square, raised 6 to 10 feet from the ground on four posts.[N131] [Footnote N131: Dall, Alaska, p. 13.] Belonging to each household, and usually near the house, are low scaffolds for the large boats, rows of posts for stretching lines of thong, and one or more small cellars or underground rooms framed with whales’ bones, the skull being frequently used for a roof, which serve as storehouses for blubber. These may be called “blubber rooms.” [Illustration: FIG. 12.--House in Utkiavwĭñ.]