Johann Joachim Becher (1635 in Speyer - 1682 in London) was a German physician, alchemist, precursor of chemistry, scholar, polymath and adventurer, best known for his development of the phlogiston theory of combustion, and his advancement of Austrian cameralism.
Becher, Johann Joachim. Chemistry, alchemy. "Chymischer Glück-Hafen, oder Grosse Chymische Concordantz". Halle (Saale): Krug, 1726. Smaller 4to. Engraved frontispiece, titlepage, (28), 810, (28) pp. Half-parchment binding.