In 1540 â `` 1541 he visited the famous medical university of Montpellier , took his degree of doctor of medicine ( 1541 ) at Basel , and then settled down to practice at ZÃ 1\/4 rich , where he obtained the post of lecturer in physics at the Carolinum , the precursor of the University of ZÃ 1\/4 rich . In 1540-1541 he visited the famous medical university of Montpellier , took his degree of doctor of medicine ( 1541 ) at Basel , and then settled down to practice at ZÃ 1\/4 rich , where he obtained the post of lecturer in physics at the Carolinum , the precursor of the University of ZÃ 1\/4 rich .