Last week in Mannheim I encountered this great 2003 reprint of the 1928 German edition of Georgius Agricola's "De Re Metallica" originally from 1556, an early reference on the art, science, philosophy and economics of mining and chemistry.

Last week in Mannheim I encountered this great 2003 reprint of the 1928 German edition of Georgius Agricola's "De Re Metallica" originally from 1556, an early reference on the art, science, philosophy and economics of mining and chemistry.