. Bulletin. Ethnology. hrdliCkaI stone INDUSTRIES OP THE ARGENTINE COAST 135 merit forms. The result of the hammer stroke varied with the strength of the blow, the character of the pebble material, and the degree of hardness of the* anvil-stone. The first stroke, if strong, shattered the pebble, split it into nearly equal parts, or removed flakes from one or both faces. When the anvil was of hard stone, the lower end of the pebble was also fractured, yielding flakes identi- cal with those produced by the direct impact of the hammer. When the pebble was of tough or refractory material, several
. Bulletin. Ethnology. hrdliCkaI stone INDUSTRIES OP THE ARGENTINE COAST 135 merit forms. The result of the hammer stroke varied with the strength of the blow, the character of the pebble material, and the degree of hardness of the* anvil-stone. The first stroke, if strong, shattered the pebble, split it into nearly equal parts, or removed flakes from one or both faces. When the anvil was of hard stone, the lower end of the pebble was also fractured, yielding flakes identi- cal with those produced by the direct impact of the hammer. When the pebble was of tough or refractory material, several strokes were often delivered and with increasing vigor before even a single flake of moderate size was driven oft*. Continuation of the effort was encouraged by the fact that satisfactory flakes were often secured after the end of the pebble had become well battered. When it became apparent that further effort must be futile, the mutilated pebble was abandoned as mere waste. But whether good flakes were secured or not, the ends of the pebble under the hammer took forms entirely familiar to the student of the Argentine artifacts. In many. 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
