Among problematical wooden objects may be mentioned billets (pl. 33), flattened on one side and rounded at each end. Two of these were found, with calcined human bones, in the inclosure used for cremation of the dead, situated at the northern end of the large refuse heap. These, like the bowls with which they were associated, were coated with a white salt-like deposit. None of the many wooden objects figured by Nordenskiöld are exactly the same as those above mentioned, although the one shown in his plate XLIII, figure 17, is very close in form and size. Several bent twigs or loops of flexible wood from the refuse heaps were found; these are supposed to have been inserted in the masonry, one on each side of door and window openings, to hold in place the stick which served as a bolt for fastening the door or window stone in position. [Illustration: FIG. 3.--Planting sticks.] Bent sticks, of dumb-bell shape, having a knob at each end (pl. 33, _b_), are believed to have been used in games. A similar object from the Mancos region is figured by Mr. Stewart Culin in his account of the games of the cliff-dwellers.[75] The ancient people of the semi-deserts of Atacama, in South America, employed a similar but larger stick, to which cords were attached for strapping bundles on their beasts of burden. [Footnote 75: _Twenty-fourth Annual Report of the Bureau of American Ethnology._] DRILLS A small pointed stone attached with fiber to the end of a stick, similar to those found by Nordenskiöld in ruin 9 and at Long House, was found. The Cliff Palace people kindled fire by means of the fire-drill and fire-stick (hearth), a specimen of which, similar to one collected at Spruce-tree House, is contained in the collection. Both of these fire-making implements were broken when found, apparently thrown away on that account either by the original people or by subsequent visitors. BONE IMPLEMENTS Many bone implements (pl. 34, 35) were found during the excavation of Cliff Palace. They are of the bones of birds and small mammals, or, now and then, of those of antelope or bear, the latter furnishing the best material for large scrapers. These implements were evidently sharpened by rubbing on the stones of walls or on the face of the cliff, as grooves, apparently made in this way, are there visible in several places. Scratches made in shaping or sharpening bones, repeatedly found on the masonry of Cliff Palace, are not peculiar, resembling those referred to in the report on Spruce-tree House. A small tube with a hole midway of its length doubtless served as a whistle, similar instruments being still often used in Hopi ceremonies to imitate the calls of birds. [Illustration: PLATE 34 BONE IMPLEMENTS]