. De re metallica. Metallurgy; Mineral industries. 320 BOOK VIII. A—First machine. B—Its stamps. C—Its mortar-box. D—Second machine. E—Its stamps. F—Its mortar-box. G—Third machine. H—Its stamps. I—Its MORTAR-BOX. K—Fourth machine. L—Its stamps. M—Its 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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