<p style='text-align: justify;'>The Summulae logicales was a standard textbook on logic up to the seventeenth century. As is often the case for editions of common texts, frequently reprinted, survival rates for fifteenth-century editions of the Summulae logicales are extremely poor. Twenty-nine of the seventy-four recorded incunabular editions survive in unique copies, including this example. Produced in a small format, and bound in an inexpensive and light-weight parchment fragment from a thirteenth-century alchemical manuscript, this was a book which could travel easily. By the early sixteenth century this copy had travelled from Cologne to Galilee, carried there by Arnoldus Conradi, a Dominican Friar.</p>
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