Joseph Duchesne

Joseph Duchesne or du Chesne (Quercetan, Latin Josephus Quercetanus) ( 1544, Lectoure – 1609) was a French physician. A follower of Paracelsus, he is now remembered for important if transitional alchemical theories. He called sugar toxic, saying: "Under its whiteness, sugar hides a great blackness."

Biography Duchesne was born around 1544 in Lectoure, Armagnac and studied at Montpellier, and then at Basel, where he received a medical diploma in 1573. During the 1570s at Lyon, he married Anne Trie

Works

1576 : Sclopetarius–On wounds made by muskets and similar weapons 1603 : De priscorum philosophorum verae medicinae material 1604 : Ad veritatem hermeticae medicinae ex Hippocratis veterumque decretis ac therapeusi 1606 : Tetras gravissimorum totius capitis affectuum, Marburg: Paulus Egenolphus, 1606. 1607 : Pharmacopea dogmaticorum La farmacopea overo antidotario riformato del signore Giuseppe Quercetano…, translated by Giacomo Ferrari. Venice, 1619 La pharmacopée des dogmatiques, 2nd ed. with emendations. Rouen: Corneille Pitreson, 1639 1619 : Le Ricchezze della riformata Farmacopea del Giuseppe Quercetano. Nouamente di Favella Latina traportata in Italiana da Giacomo Ferrari - Venice: Guerigli, 1619. 1625 : Pharmacopeia restituta - Strassburg: Zetzner, 1625. 1625 : Diaeteticon polyhistoricum- Strassburg: Zetzner, 1625. 1625 : Tétrade des plus grièves maladies de tout le cerveau. 1639 : Traicté familier de l'exacte preparation spagirique des medicamens, Rouen: Corneille Pitreson 1648 : Quercetanus redivivus, hoc est, ars medica dogmatico-hermetica Vol.1-3 - Francofurti: Beyer, 1648.