The Chemical Heritage Foundation (CHF) has acquired a rare collection of very early alchemy manuscripts, some dating from before the invention of printing.
Of the nine manuscripts in the collection, seven date to the 15th century, as early as the 1430s. Among them is Petrus Bonus’s Pretiosa margarita novella (The Precious New Pearl), ca. 1450–1480; it is one of only six known complete copies of that work in existence. The collection also includes three framed illuminated miniatures of alchemical imagery from around 1450.
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http://www.chemheritage.org/about/news-and-press/press-releases/201...