Petri Peregrini Maricurtensis De magnete, seu, Rota perpetui motus, libellus

52. Magnetic Motion Pierre de Maricourt, also known as Petrus Peregrinus, wrote this 13th-century account discussing the natural magnet, how a compass is constructed, and how it used in navigation. Only some twenty copies of this book are know to exist. Signatures: pi4 A-F4. No printer is listed but the work was possibly printed by Philipp Ulhart according to BM STC German, 1455-1600."
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52. Magnetic Motion

Pierre de Maricourt, also known as Petrus Peregrinus, wrote this 13th-century account discussing the natural magnet, how a compass is constructed, and how it used in navigation. Only some twenty copies of this book are know to exist.
Signatures: pi4 A-F4.
No printer is listed but the work was possibly printed by Philipp Ulhart according to BM STC German, 1455-1600."

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