To construct the cabin lay down the sill-joist of two-by-three-inch spruce, making the plan fourteen feet long and seven feet and eight inches wide (Fig. 6). To this nail the uprights and bracing timbers, forming the sides and ends as shown in the drawings of the side and end elevation (Fig. 7). The door spaces at the ends should be three feet wide and seven feet high, so that when trimmed and the doors hung the actual size will be two feet and eight inches wide by six feet and ten inches high.
The window openings are two feet wide by two feet and six inches high, and between all the uprights braces are nailed fast to prevent the frame from racking. The arrangement of framing timbers is quite clearly shown in the drawings, and in the deck plan (Fig. 6) the arrangement of the bunks is indicated. Across the top of the framework one-and-a-half-by-six-inch beams are laid having their upper edge crowned as shown in the end elevation (Fig. 7). Over these the roofing boards are laid lengthwise, and on top of them canvas is drawn and tacked down all around the edges with copper tacks.
The roofing boards may be of three-quarter-inch stuff planed on both sides and from two to four inches wide, whichever is the easiest to obtain. The boards should extend over the ends and sides for two or three inches so that a finishing moulding can be made fast under the boards. Give the top of the boards two good coats of paint, then stretch oiled canvas over the top and tack it fast. Several coats of paint will finish the canvas and make it hard enough to walk on, for in pleasant weather this upper deck will make a pleasant place to spend many hours under the shade of a canopy. The cabin sheathing is of narrow matched boards planed on both sides and as free from knots and sappy places as it is possible to get them. The boards must be thoroughly sun-dried before they are laid on and nailed fast, and it would be well also to paint the matched edges so that moisture may not get in and swell them. The inside and outside of the cabin is to be painted to protect the wood from moisture, and if painted a light tint of any color, or white, it will be cooler in summer when the sun is shining than if coated with a dark color. Dark colors absorb light and heat while light ones reflect or shed them.
