The gunwale ends in some canoes were fastened together by means of one or more lashings, often widely spaced. After being lashed together, a narrow wedge was sometimes driven between the two gunwales from inboard to tighten the lashings. The ends were sometimes beveled on their bearing surfaces so as to make a neat appearance when joined. The various ways in which the gunwale ends at stem and stern were finished can best be described when individual types are under examination. Some canoes had a small piece of bark over the ends of the gunwales but under the outwales that held it in place. Whether these pieces were employed to protect the lashing of the gunwales and adjoining work from the weather, or whether they were the vestigial remains of a decking once used, cannot be determined. In the Canadian Northwest the ends of bark canoes were sometimes decked with bark for a short distance inboard. [Illustration: Figure 26 GUNWALES AND STAKES ON BUILDING BED, plan view. (_Sketch by Adney._)] The bark was secured to the gunwales by a continuous spiral lashing all along the main gunwale or by separated lashing in series. In the first, the continuous lashing, where it passed through the bark, might show regularly spaced separations to avoid the tops of the ribs. In the second, the lashings were placed clear of the ribs. There were some slight variations in the lashings, but these were of minor importance so far as structural strength is concerned. In all cases, the bark was brought up to or over the top of the gunwale before being secured, so that the holes for the lashing were pierced at some distance from the edge of the bark to prevent it from splitting. The ends of the thwarts were mortised into the gunwales and also secured by lashings. The number of thwarts varied with the tribal type, the size, and the purpose of the canoe. Usually an odd number, from three to nine, were used, though occasional canoes had two or four thwarts. Very small canoes for hunting might have only two or three thwarts, but most canoes 14 to 20 feet long had five. Canoes intended for portaging usually had one thwart at midlength to aid in lifting the canoe for the carry position. The distance between the thwarts might be determined by structural design, or might be fixed so as to divide the cargo space to allow proper trim. The thwarts might serve as backrests for passengers, but were never used as seats. There was no standard form for the shape of the thwarts, which varied not only to some degree by tribal classification, but even among builders in single tribe. They were usually thickest and widest over the centerline of the canoe, tapering outboard and then spreading again at the gunwales to form a marked shoulder at the mortise. The lashings to the gunwales often passed through two or more holes in this shoulder.