The illustrations, figures 219 and 220, show two forms of gates used on the island of Jamaica. These gates are twenty-one feet long, each, and cannot possibly sag, even if any number of small boys swing on them. In gate figure 220 the main post is nine by six inches; the bars—marked 2, 3, 5 and 7—are let in the wood three inches on the upper side and one and a half inches on the lower. The tenons, indicated by the dotted lines, go entirely through the posts, and are fastened with pins. Brace 6 is attached to the upper bar eighteen inches beyond the center, F; D is a stout fence wire fastened by a screw nut at E; the wire, B, is held tightly by the screw hook, A; the iron band, 9, is an inch thick and is bolted to the post. It works on a pivot one and a quarter inches in diameter, and which turns on a flat piece of iron at the bottom of a piece of a one and a half inch iron pipe, which is soldered with molten lead in the stone, 10. Only hard wood is used in the construction. In the gate shown in figure 219, the construction differs from the one just described in that it has a light chain fastened in the shackle, C, and is screwed firmly at A. It is attached to the post, H, by a pivot, as seen in our illustration.