Records of the Past Exploration Society · [Washington, D.C. : Records of the Past Exploration Society] · leaf 282
BD FIGURE III A C … D C FIGURE IV AB *72 RECORDS OF THE PAST their action. A thin and delicately finished specimen is drilled withsafety, whereas if first drilled it is weakened and subsequent peckingor grinding might destroy it. The rougher or heavier work, in mostcases, was done first Selecting a block of slate or…
Archaeology
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