The transverse frames, or ribs, had been prebent in the usual manner before assembly began; a few of these were now put in place, the ends being forced under the gunwales between their outer faces and the bark, or into a groove on the underside of the gunwale. This stretched the bark transversely and vertically. Once the bark had been forced into form by this method, the remaining ribs were added, and these now held the hogged bottom down so that the weights or stones could be removed. The canoe was then turned over, the seams gummed, and any tears or rents repaired. This method of building usually produced a slight hogging in both bottom and in the sheer amidships, but when the canoe was afloat and loaded the light, flexible construction caused the hogging to disappear. The kayak-form canoes of the Dènè tribe appear to be the most highly developed of all in this type. The decks of many of the kayak-form canoes were made of a triangular sheet of bark cut with the grain of the bark running athwartships, so that it could be held in place by the curl of its edges, which clamped under the outwales, as well as by three lashings. The edges were curled by passing a glowing brand along them. One lashing was around the stem-head and two were at the inboard end of the deck, around inwale and outwale. If the inboard end of the deck was not on a thwart it was stiffened by a batten lashed on top of the deck athwartship, at the deck end, to serve as an exterior deck beam and breakwater in one. If the deck end was on a thwart, a batten might be pegged athwartship on top of the deck; sometimes this batten was rolled in a sheet of bark first. Another method was to use a small sheet of bark tightly rolled, with its free edge tucked under the deck end and secured at the ends of the roll by the deck-gunwale lashings there. Some canoes had their decks lashed over battens for a short distance along the gunwales. In some Mackenzie Basin kayak forms, the end of the deck at the stem-head was protected by a small paddle-or leaf-shaped piece of bark placed under the lashing there and shaped to reach a little over onto the stem piece so as to seal the seam. The fitting of the bark cover of the kayak-form canoes was not the same in all types. In the Mackenzie canoes the bottom, which might be in three, four, or five pieces sewn together, was alike on both sides; to it the side pieces were sewn at, or just above, the chines. The sides were made up of deep panels, five to nine to a side. There were no horizontal seams other than the one near the chines.