Some of the implements pointed out have one end straight, and the others are beautiful specimens of aboriginal workmanship. Fig. 58 exhibits a knife of porphyry, half-size, found by A.E. Marks, near Sebago, Maine. This knife is one of similar types found in Maine graves, but is a better specimen than the average.
Fig. 71. (S. 1–2 to 1–3.) Lance-heads. Beautiful forms of art in flint. Materials: argillite and jasper. Stephen Van Rensselaer’s collection, Newark, New Jersey.
Fig. 57 presents long, slender lance-heads, or possibly knives from Mr. Braun’s collection, East St. Louis. The originals of these are about three times the size of the figure. About East St. Louis is the famous Cahokia Mound, with some thirty other mounds. The art in stone of this region is very high, and some of the best implements in the country have been found on either side of the Mississippi River, near the present site of St. Louis.
Specimens pointed at both ends are more common on the Pacific Coast and in the Colorado Valley than elsewhere in the United States. Some of the large problematical forms in flint from Tennessee and Kentucky are of this type.
Fig. 67 presents two pointed at either end. Some simpler forms are shown in Fig. 55, and in groups of chipped objects of all kinds are some more or less pointed at either end, notably Figs. 68 and 73.
Fig. 72. (S. 2–5.) Wisconsin-Michigan types of knives and slightly shouldered objects. S. D. Mitchell collection, Ripon, Wisconsin.
Fig. 73. (S. 1–2.) Five knives and two spear-heads. These are typical Wisconsin objects of sugar quartz and argillite. The one to the left has two ends and convex sides. The next, E 268, has a straight back and a convex edge. It is a remarkable knife. The others are all interesting specimens. Beloit College collection, Beloit, Wisconsin.