A seat eighteen inches wide may be built about the foot of the trunk and supported by two-by-three-inch joist let into the ground a foot or eighteen inches. Instead of shingling this roof, it may be thatched with salt hay arranged in flat tufts and nailed onto the lath. Begin at the lower edge to do this and thatch one line first; then begin on the end of the line above it and arrange the tufts closely side by side, and nail them fast. The last line at the top should have tar paper under it, closely fitted, and nailed to the tree trunk with copper tacks and painted. This will deflect the water and prevent it from running down the trunk and wetting the seat.
A simple but effective and useful rustic pergola is shown in Fig. 6. All the posts, cross-pieces, braces, and stringers at the top are of undressed wood, having the bark on. The corner posts are from four to six inches in diameter, and are embedded two feet in the ground. They are seven feet above the ground, and on top of two sets cross-stringers are made fast and braced with angle brackets. A sharp hatchet, a saw, and a hammer will be the only tools required for this work; and where an angle piece is attached to a post, the bark and wood should be cut away on the post, so that the bevelled edge of the bracket will lie snugly against it. It should then be nailed fast with long steel wire nails. This pergola can be made of almost any size, but for one of moderate proportions it should measure eight feet square and seven feet high. Seats of smooth boards may be arranged on three sides between posts, and wires may be run up and down and crosswise, on which climbing vines may be supported.
Fig. 3 Fig. 4 Fig. 5 Fig. 6 Fig. 7 Fig. 8 ]
A circular pergola will present a pleasing appearance in any yard. It is made from six rustic posts, six supporting beams, and eleven top rafters, as shown in Fig. 7.
Tree-trunks of the proper size and length may be cut in the woods, or some locust posts can be purchased at a lumber-yard. The bark is to be left on, and the posts are to be planted two feet in the ground in a circle eight feet in diameter. The tops of the posts should be sawed off so that they are all an equal distance from the ground. On top of them nail six pieces of joist, two by four inches, with the narrower side resting on the posts.