Perret Envelope

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Perret Envelope

Perret sent this letter in late June 1919 to volcanologist Alessandro Malladra, Director of the Vesuvius Volcano Observatory from 1927 to 1935. Evidently the envelope contained photographs that Perret had taken on June 2 at Stromboli, where an eruption on May 22 showered 60-ton boulders on the island's village of Ginostra, killing four people.
Courtesy of Marco Occhipinti.


In 2008, Cyril Aubaud, a geochemist at the Institut de Physique du Globe in Paris, bought a used book written by Perret and discovered the photographs tucked inside. Perhaps the book once belonged to

Malladra himself. You can see the photographs here.