Friday, November 23, 2012
Wormholes in Old Books Preserve a History of Insects
Discover Magazine takes a look at the bugs that live in our books.
From the piece...
There’s no way of telling how old a particular hole is. Instead, Hedges looked at prints in actual books. Since the books bear their date and place of publication, Hedges could trace the provenance of each hole to a specific year and country.
He studied more than 3,200 such holes, made between 1462 and 1899. Those from northern Europe, including England, Germany, the Netherlands, and Scandinavia, were round, and just 1.4 millimetres wide on average. Those from southern Europe, including Spain, Portugal, Italy and most of France, were larger, with average diameters of 2.3 millimetres. The southern holes also included many long tracks—these were made when the beetles, rather than burrowing straight out, exited from the wood in diagnonal paths that followed the grain.
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