. Bulletin. Ethnology. c d Fig. 23. Examples of flaked pebbles from Argentina and District of Columbia, a, Pebble nucleus of fine-grained stone from the Argentine coa^t, from which two teshoa flakes were struck by the ancient workmen, b, Coarse-grained Potomac pebble nucleus from which flakes were .struck by the author with two blows, c, The flakes restored to their place on the nucleus, d, The several flakes separated from the nucleus. more difhcult to strike off a well-proportioned flake from the side than from the end of a pebble. Besides, a stroke having enough force to remove a large flak
. Bulletin. Ethnology. c d Fig. 23. Examples of flaked pebbles from Argentina and District of Columbia, a, Pebble nucleus of fine-grained stone from the Argentine coa^t, from which two teshoa flakes were struck by the ancient workmen, b, Coarse-grained Potomac pebble nucleus from which flakes were .struck by the author with two blows, c, The flakes restored to their place on the nucleus, d, The several flakes separated from the nucleus. more difhcult to strike off a well-proportioned flake from the side than from the end of a pebble. Besides, a stroke having enough force to remove a large flake from the long margin of a pebble usually resulted in cross-fracture and failure. In fact, aU the features 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
