. Bulletin - United States National Museum. Science. Fourth Stage of Canoe Construction: bark cover has been shaped and all stakes placed. The gunwales have been raised to sheer height; "A" indicates the sticks which fix the sheer of the gunwales; "B" indicates blocks placed under ends to form rocker. .Side panels are shown in place, and cover is being sewn to gunwales. (Sketch hy Adney.) lengths determined by the measuring stick or from memory, one for each end of each thwart, and one for each end of the gunvi-alc frame. Those under the middle thwart ends in this canoe are
. Bulletin - United States National Museum. Science. Fourth Stage of Canoe Construction: bark cover has been shaped and all stakes placed. The gunwales have been raised to sheer height; "A" indicates the sticks which fix the sheer of the gunwales; "B" indicates blocks placed under ends to form rocker. .Side panels are shown in place, and cover is being sewn to gunwales. (Sketch hy Adney.) lengths determined by the measuring stick or from memory, one for each end of each thwart, and one for each end of the gunvi-alc frame. Those under the middle thwart ends in this canoe are lH inches long, those under the thwarts out from the middle will be 9 inches, those under the end thwarts will be 12 inches, and those at the gunwale ends will be 17 inches long. These posts, cut with squared butts, are laid alongside the bed. The gunwale frame is now lifted and the pair of posts to go under the middle thwart are stepped on the bark cover, the gunwale is lowered onto them, and while the frame and posts are held steady, stones are laid on a plank over the middle thwart. Next, the ends of the gunwales are held and lifted so that a pair of posts can be placed at the thwarts next out from the middle. More weights are placed over these, the operation is repeated for the end thwarts and, finally at the gvmwale ends, so that the gunwales now stand on posts on the bark cover, sprung to the correct fore-and-aft sheer and steadied by the bearing of the outside of the gunwale frame on the rounded faces of the inside stakes. Now the sheer has been established and the depth of the canoe is approxi- mated. To protect the bark cover from the thrust of the weights used to ballast the frame, some builders inserted small bark or wood shields for padding under the heels of the posts. By .some tribes the posts were notched on one face, to fit inside the gunwales near the thwarts, and there were also other ways of assembling the gunwales themselves. It should be apparent tha
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Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
