. Bulletin. Ethnology. Evans and Meggers] ARCHEOLOGY IN BRITISH GUIANA 47 Percussion flake picks of the large variety range from 5-10 cm. in length, cm. in width, and 5-15 mm. in tliickness (figs. 13-14; pi. 12, a-h) ; the small variety ranges from 3-5 cm. in length, 2-3 cm. in width, and 5-8 mm. in tliickness (fig. 15; pi. 12, ir-j)). Although andesite is the most common rock material, fine-grained micaceous schist, quartz, limonite concretions, and gneiss are also used. Scrapers (fig. 16).—A series of quartz tools from several sites are classified as scrapers. The quartz of this area
. Bulletin. Ethnology. Evans and Meggers] ARCHEOLOGY IN BRITISH GUIANA 47 Percussion flake picks of the large variety range from 5-10 cm. in length, cm. in width, and 5-15 mm. in tliickness (figs. 13-14; pi. 12, a-h) ; the small variety ranges from 3-5 cm. in length, 2-3 cm. in width, and 5-8 mm. in tliickness (fig. 15; pi. 12, ir-j)). Although andesite is the most common rock material, fine-grained micaceous schist, quartz, limonite concretions, and gneiss are also used. Scrapers (fig. 16).—A series of quartz tools from several sites are classified as scrapers. The quartz of this area is poor quality and difficult to work by percussion chipping. However, by taking ad- vantage of the natural cleavage of the rock, it was possible to produce. ,/ \^. 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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