 In 1531 Agricola received an offer of the city of "Kepmnicz" (Chemnitz) for the position of "Stadtleybarzt" (town physician), which he accepted and he relocated to Chemnitz in 1533.Although little is known about his work as physician, Agricola enters his most productive years and soon becomes Chemnitz lord mayor and serves as diplomat and historiograph for Duke George, who was looking to uncover possible territorial claims and commissioned Agricola with a large historical work, the "Dominatores Saxonici a prima origine ad hanc aetatem" (Lords of Saxony from the beginning to the present time), which took 20 years to accomplish and was only published in 1555 at Freiberg.In his work "De Mensuris et ponderibus", published in 1533, he describes the systems of Greek and Roman measures and weights.