. De re metallica. Metallurgy; Mineral industries. 64 BOOK III. Some veins run straight along on the plateaux, the hills, or A—Principal vein. B—Transverse vein. C—Vein cutting principal one 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 Agricola, Georg, 1494-1555; Hoover, Herbert, 1874-1964. New York, Dover Publications

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