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Giambattista della Porta

Constructing volvelles
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Constructing volvelles

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Sarah Werner

As Elizabeth Bruxer correctly identified within a few short hours of its posting, this month’s crocodile mystery showed the inner disc of an unconstructed volvelle from a copy of the 1591 edition of Giambattista della Porta’s De furtivis literarum  notis (STC…