Winsor, Justin, 1831-1897, Maclean, John, 1851-1928, association, MacLean, Harrison John (autograph) · Boston ; New York : Houghton, Mifflin and Co. · leaf 313
PERUVIAN METAL WORKERS.* and used as a coloring material, its properties for refining silver do not ap-pear to have been discovered. Copper was abundant in the Collao and in … II PERUVIAN POTTERY, t Charcas, and tin was found in the hills on the east side of Lake Titicaca,which enabled the Peruvians to use bronze very extensively.^ Lead was I A bronze instrument found at Sorata had Humboldt gave the composition of a bronzethe following composition, according to an anal-…
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