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AGE LINES. Breaks such as those marked by arrowheads (red) in a 16th-century map of Jamaica (top) mar woodblock prints more often in later editions than in earlier ones. However, prints made from copper plates (bottom) fade from early to late editions, as seen in these ship details from the 1576 edition (left) and 1604 edition (right) of the same Italian map book. A new method for determining the publication dates of undated editions tracks such changes. Credit: Hedges and B. Bordone; Hedges and Porcacchi
Found in: Science & Society

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