. Bulletin. Ethnology. MBGOBRS AND BVANS] ARCHEOLOGY AT MOUTH OF AMAZON 105 and 1 sherd of Ariste Plain ( percent). Nonceramic artifacts from Site A-7 include an ax, hammerstones, and a grinding stone: Stone ax.—A large, flat ax was made from a fine-grained, gray-black diabase by pecking and abrading. The sides of the poll are rounded with a tapered butt, pecked on all surfaces, and with a convex bit polished on both surfaces for a dis- tance of 1 cm. back from the blade edge; length cm., bit width cm., poll width cm., poll thickness cm., width of butt end cm. Sto7ie to
. Bulletin. Ethnology. MBGOBRS AND BVANS] ARCHEOLOGY AT MOUTH OF AMAZON 105 and 1 sherd of Ariste Plain ( percent). Nonceramic artifacts from Site A-7 include an ax, hammerstones, and a grinding stone: Stone ax.—A large, flat ax was made from a fine-grained, gray-black diabase by pecking and abrading. The sides of the poll are rounded with a tapered butt, pecked on all surfaces, and with a convex bit polished on both surfaces for a dis- tance of 1 cm. back from the blade edge; length cm., bit width cm., poll width cm., poll thickness cm., width of butt end cm. Sto7ie tool.—The fragment of a stone tool of fine-grained granite made from a naturally shaped, waterworn rock which was rounded off to form a blunt end but with very little pecking or polishing to give it shape. This worked end shows slight usage as a hammerstone with several flakes removed; the other end is broken off. By its shape, the artifact could be a fragment of an ax or a hammer- stone. Present fragment measures cm. long, cm. wide, cm. thick with a half-round cross section. Small hammerstone.—Of fine-grained, grayish-white diabase, shaped by abrasion with no pecking marks visible and with the larger end showing signs of use as a hammerstone. Although the corner of one edge is chipped off, the object measures cm. long, cm. wide at base, cm. wide at center of poll, and uniformly cm. thick (fig. 25, a). Grinding stone (jnano).—This fragment is so badly eroded that most of the surface is pitted giving it an unnatural roughness due to the differential weathering of. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Smithsonian Institution. Bureau of American Ethnology. Washington : G. P. O.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectethnolo, bookyear1901
