Everywhere around are innumerable flint chips and perfect weapons, burnt black and patinated by ages of sunlight. [Please select]
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] In the smaller illustration we see some remarkable types: two scrapers or knives with strongly marked "bulb of percussion" (the spot where the flint-knapper struck and from which the flakes flew off), a very regular _coup-de-poing_ which looks almost like a large arrowhead, and on the right a much weathered and patinated scraper which must be of immemorial age. [Please select]
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Flint implements might thus be expected to remain in many localities for indefinite periods, but they would certainly become more or less 'patinated,' pitted on the surface, and rounded at the angles after long exposure to heat, cold, and blown sand. [Please select]
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