4 a. Barbed or pronged points. This type of copper point is of rather infrequent occurrence. The blade is usually of an oval or somewhat triangular shape. A few specimens have long narrow blades. Situated just below the base of the blade on either side is a single barb or prong. These prongs are sharply or obtusely pointed and as a general thing do not extend out to a point in line with the outer edge of the base of the blade. The stem is short, flat, or cylindrical, and usually tapers to a sharp point. (Upper left-hand specimen, Fig. 592.) In some examples the blade is traversed on one or both faces by a well-defined median ridge. The prongs probably served the double purpose of barbs and of projections, by means of which the point could be more firmly secured to the wooden shaft into which it was inserted. Such points are to be seen in the Hamilton, Field Museum, and other collections. The smallest specimen known is three inches and the largest about seven and one half inches in length. The average size appears to be about four inches. This interesting form of spear-point also occurs sparingly in surrounding states, and has been recorded from as far east as New York and New England, where a few specimens have been found. Large iron spear-points of somewhat similar form, but with the projections squared at the ends, have been found in Wisconsin. Some of these have hearts and other devices cut or punched through the face of their blades. These were probably introduced among the Indians by the early fur-traders. 5. Conical points. A very large number of these have been collected from the extensive Lake Michigan shore village-sites in Wisconsin, of which locations they appear to be more or less characteristic, replacing to a large extent all other types of copper points. Some fine examples have also been obtained from other sites in counties farther inland; from the Lake Superior shore, and from the Lake of the Woods region in Minnesota. Fine series of these points are to be seen in the A. Gerend, Hamilton, Kuehne, and other collections. (Fig. 598, three lower figures.) [Illustration: FIG. 605. (S. about 3–4.) Copper harpoons. Left to right: Hartford, Washington County, Wisconsin; Wisconsin; Wauwatosa, Milwaukee County, Wisconsin. Milwaukee Public Museum collection. ] [Illustration: FIG. 606. (S. 1–2.) Copper harpoon. Collection of S. G. Crump, Pittsford, New York. ] [Illustration: FIG. 607. (S. 1–8.) Front and reverse of a copper war-club. Dug out of a prehistoric grave at Spuzzum, British Columbia. Obtained by Mr. James Teit. ]