![](/data/sachsen/images/24/202405/116834/200w_portraet-des-johann-joachim-becher-116834-3834.jpg)
"Johann Joachim Becher (German: [ˈbɛçɐ]; 6 May 1635 – October 1682) was a German physician, alchemist, precursor of chemistry, scholar and adventurer, best known for his development of the phlogiston theory of combustion, and his advancement of Austrian cameralism." - (en.wikipedia.org 09.11.2019)