“... On our sociable excursions, we used to find three-cornered pieces of elk-horn (Fig. 552) which showed considerable work. They were long and pointed, had a round base, showed the incision of a sharp instrument along the edges, were scraped at both sides; in short, seemed to be shaped for some purpose, which we could not guess. Probably they were intended for some kind of an awl, or some other object of use or ornament. It was strange, though, that we found such quantities of them and all in the same state of more or less finish, and still we never found an implement of a shape similar to these peculiar triangular pieces of horn. We called them ‘unfinished implements of horn, purpose unknown.’” [Illustration: FIG. 557. (S. 1–2.) Bone ornaments and effigies. Three of these may represent goose heads. The bone to the right is ridged, and on the elevation are notches. ] After Mr. Brower returned East, and Rev. Mr. Wilson moved away from Mandan, Mr. Steinbrueck continued investigations, and after several years had passed, came to the conclusion that the triangular pieces were discarded objects, obtained during the process of manufacture of other forms. Mr. Steinbrueck has drawn a series of outlines conveying his ideas as to the manufacture of these objects, which I reproduce in Fig. 552 _A_. Reference to the letters in Fig. 552 _A_ will make clear Mr. Steinbrueck’s contentions. [Illustration: FIG. 558. (S. 3–4.) Teeth of the opossum and raccoon. Harness Mound, Ohio. ] [Illustration: FIG. 559. (S. 2–3.) To the left in Fig. 559 is an arrowpoint made of deer-horn, with a perforation for attachment to the shaft. The other two are pendants made of ocean shell. These are from the Baum Village-Site, Ohio. ] [Illustration: FIG. 560. (S. 1–3.) Shell crescent. Gartner Mound, Ohio. These three figures are from the collection of W. C. Mills. ]