“…The duke asked Benedetti Varchi to compose his Si l'archimia è vera o no quistione (1544), where Varchi, alike Biringuccio, praised the true alchemy (alchimia vera), which led to hundreds of useful discoveries: metallic alloys, medicines, colors, artillery, glass, and many other chemical compounds and instruments (Perifano 1997). All these different arts continued being practiced in the Casino of San Marco, where Francesco I de Medici (1541-1587) set a new laboratory, or in the Fonderia of the Uffizi Gallery (Beretta 2014). Chrysopoeia was discussed and practiced by the authors of seventeenth-century chymical textbooks (a tradition inaugurated by Libavius' Alchemia), which greatly contributed to the reorganizing of this impressive body of knowledge (Hannaway 1975).…”